GU Impex

HC-12 wireless RF UART communication module is a new generation of multi-channel embedded wireless data transmission module. The Radio frequency of 433.4 – 473.0MHz, can be setting a communication channel, step is 400kHz, a total of 100 channels. The module maximum transmit power is 100mW (20dBm), and -116dBm receiver sensitivity air of the 5000bps baud rate, communication distance about 500 meters.
The module adopts a stamped hole encapsulation method, which can be welded. The module size is 27.4mm*13.2mm *4mm (including antenna seat, not including the spring antenna), which is convenient for the customer to be embedded in the application system. The module has a PCB antenna seat ANT1, users can use the coaxial cable, the use of 433MHz band external antenna.

The module also has antenna welding hole ANT2, convenient user welded spring antenna. The user can choose one kind of antenna according to the request. The module contains MCU, users do not need to program in addition, just send and receive
UART data. The module uses a variety of UART transmission mode, the user can choose
according to the requirements of the use of AT command. The four UART modes of FU1, FU2, FU3, FU4, the average operating current is 3.6mA, 80μA, 16mA and 16mA, the maximum operating current is 100mA (full power transmit state)  HC12 Module is based on the SI4463 EZRadioPro family chip by SiLabs. This module offers a wireless data transmission and reception range of approximately 1 km in the open air. It’s a low power radio chip that is ultra-easy to use.

This module has an onboard STM8S003F3P6 MCU which is communicating with the SI4463 so that the user can communicate with the HC12 module using a simple TTL 2 wire serial interface (RX, TX, GND). If you are looking for cheaper RF modules, check this 434 Mhz RF Module.

Additional Information:

• Production Capacity: 1000
• Delivery Time: 2

The A3144 Hall Effect Sensor Magnet Detector Switch for Arduino is a switch that will turn on/off in the presence of a magnetic field. If no magnetic field is present, the signal line of the sensor is HIGH (3.5 V). If a magnetic field is presented to the sensor, the signal line goes LOW, at the same time the LED on the sensor lights up. An onboard LED will also indicate the presence of a magnetic field.

Connect the Powerline (middle) to +5V and ground (-) to GND. Connect signal (s) to any digital pin on the Arduino.

1. Digital Output Hall-effect sensor.
2. Operating voltage: typically 5V.
3. Output Current: 25mA.
4. It can be used to detect both the poles of a magnet.
5. The output voltage is equal to the operating voltage.
6. Operating temperature: -40°C to 85°C.
7. Turn on and Turn off time is 2 μsec each.
8. Inbuilt reverse polarity protection.
9. Suitable for Automotive and Industrial Applications.

1 x A3144 Hall Effect Sensor Magnet Detector Switch for Arduino.

This is a very easy to use low cost semiconductor Gas sensor Module with analog and digital output. This module uses MQ5 gas sensor as a gas sensing element. It requires no external components just plug in Vcc & ground pins and you are ready to go.

For Digital output the threshold value can be easily set by an on-board potentiometer.  Using this module you can easily interface MQ5  gas Sensor to any Microcontroller, Arduino or even Raspberry Pi.

This Gas Sensor module is sensitive to LPG, natural Gas & Town Gas. it is also small sensitivity to alcohol & smoke.

Specification of MQ5 GAS Sensor Module:-

• Power Supply: 5 Volts
• Interface Type: Analog & Digital
• High Sensitivity to LPG, natural Gas, Town Gas & small sensitivity to smoke & alcohol
• Low Cost.
• Stable & Long Life.
• On board Power indication.

If you want to build a device that is used to detect sense motion and almost always used to detect whether a human has moved in or out of the sensors range. Then this Sensor is needed for you. you can buy this sensor from Robu.in at a reasonable price

The PIR Motion Sensor Detector Module HC SR501 allows you to sense motion. It is almost always used to detect the motion of a human body within the sensor’s range. It is often referred to using “PIR”, “Pyroelectric”, “Passive Infrared” and “IR Motion” sensors.

The module has an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens. It has a delay time adjustment Potentiometer and sensitivity adjustment Potentiometer. Compatible with ARDUINO, RASPBERRY PI, AVR, PIC, 8051, etc.

To know more about how to interface PIR sensor with raspberry Pi 

1. Infrared Sensor with Control Circuit Board
2. The Sensitivity and Holding Time are adjustable.
3. Blockade time: 2.5s (Default)
4. Sensitive Setting: Turn to Right, Distance Increases (About 7M); Turn to Left, Distance Reduce (About 3M)
5. Time Setting: Turn to Right, Time Increases (About 200S); Turn to Left, Time Reduce (About 5S).

DS3231 Mini RTC is a Mini Real-Time Clock module designs for Raspberry Pi, but it also can be used to Arduino. DS3231 RTC IC Self-adjust 3.3V and 5V.Provide battery backup for continuous timing, Low-power consumption. Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.

It has Two calendar alarms, 1Hz, and 32.768kHz output. Reset output and input buttons Debounced High-speed (400KHz) I2C serial bus. Many RTC modules are meant to operate at 5V. Unfortunately, the Raspberry Pi operates at 3.3V, that is where this handy module comes into play, it operates at 3.3V perfect for adding an RTC to your Raspberry Pi.

1. Supported Raspberry Pi and Arduino Within -40°C to +85 ° C temperature range
2. Timing accuracy is maintained at ± 5ppm (± 0.432 sec/day).
3. operating temperature range:-40°C to +85°C
4. Provide battery backup for continuous timing.
5. Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.
6. Two calendar alarm.
7. 1Hz and 32.768kHz output.
8. Size: 14x14x12 mm

1 x DS3231 Real Time Clock Module 3.3V 5V Precise

AC Voltage Sensor Module ZMPT101B (Single Phase) is the best for the purpose of the DIY project, where we need to measure the accurate AC voltage with a voltage transformer. This is an ideal choice to measure the AC voltage using Arduino/ESP8266/Raspberry Pi like an opensource platform. In many electrical projects, engineer directly deals with measurements with few basic requirements like High galvanic isolation, Wide Range, High accuracy, Good Consistency.

Onboard precision miniature voltage transformer, The active phase AC output voltage transformer module. Onboard precision op-amp circuit, the signal sampling and appropriate compensation for precise functions. Modules can be measured within 250V AC voltage, the corresponding analog output can be adjusted. It is brand new, good quality high performance.

1. Low price
2. Small size and lightweight
3. Easy PCB mounting
4. Good consistency
5. Widely acclaimed

1 x AC Voltage Sensor Module ZMPT101B

This IR reflective sensor Module used TCRT5000 IR Sensor to detect colour and distance. This sensor module consists on an IR transmitter & an IR receiver. IR Transmitter continuously emits IR signal which is then reflected by an obstacle and is then detected by the IR receiver. TCRT5000 Infrared Reflective Sensor Module is often used in line following robots,object sorting Robot because this module can sense if a surface is white or black. The measuring distance range from 1mm to 8mm, and the central point is about 2.5mm. There is also an on-board potentiometer to adjust the sensitivity. The infrared diode will emitting the infrared continually when the module is powered ON, when the emitted infrared light has not been reflected or the strength is not big enough,the receiver diode will in the off state and output pin i.e. DO will be LOW.

Description of Line Tracking sensor TCRT5000L:-

•     Main chip: LM393,
•     Designed with reflected infrared sensor, indicator light.
•     Built in a potentiometer for sensitivity control.
•     On-board LM393 voltage comparator chip and infrared sensing probe TCRT5000L
•     Support 5 V / 3.5 V voltage input
•     On-board signal output instructions, output is high effective signal at the same time, the indicator lamp light                output signal can be directly and single-chip microcomputer IO connection & middot;
•     Signal detection sensitivity can adjust
•     Reserve all the way more circuits (P3 voltage drawn)
•     using TCRT5000 infrared reflection sensor
•     test reflection distance: 1 mm to 25 mm
•     Operation voltage: 3.5v-5V
•     Operation current: >15mA
•     wide voltage LM393 comparator
•     output form: digital switch output (0 and 1)
•     a fixed bolt hole, convenient installation.

Features of Line Tracking sensor TCRT5000:-

• Product Name : Infrared Obstacle Avoidance Sensor Module;
• Module Model : TCRT5000;
• Working Voltage : DC         3.5-5V
• Output Channel : 0/1;
• Detect Distance : 1-25mm;
• Focal Distance : 2.5mm
• Chipset : LM393;
• PCB Size : 32 x 14mm/1.3" x 0.55" (L*W)
• Total Size : 38 x 14 x 18mm/1.5" x 0.55" x 0.7"(L*W*H);
• Material : Electric Part
• Package Content : 1 x Infrared Obstacle Avoidance Sensor Module.

The TTP229 Touch Senor Module employs TTP229 Capacitive Touch Sensing IC to sense the human touch and give the output accordingly. Unlike Mechanical and Membrane type switches, this offers touch-sensitive buttons and better workability and durability. The keypad offers a digital output of the first 8 keys and I2C output if you want to read all 16 keys of the touch module. I2C requires just 2 connections and can be directly connected to Arduino/ Raspberry Pi/NodeMcu, ESP8266, ESP32, etc. Since it is a very popular product, you can directly use it with above mentioned controllers without worrying about writing the libraries and low-level code. It can be used in a wide range of consumer products and as a durable replacement of Mechanical keys.

• Operating voltage 2.4V to 5.5V
• Built-in Voltage regulator
• Stand-by current at 3V: 0.25uA at 8 Hz Sampling Rate
• Two different operating modes: independent 8 Channel O/P and I2C interface 16 Key Mode
• 2 wires I2C interface for both 16 key and 8 key mode
• Onboard LEDs to indicate which pad is being touched
• 2 Wires serial interface can select active high or low by option
• Provides two kinds of sampling rate: slow sampling rate 8Hz and fast sampling rate 64Hz
• Optional maximum key-on time about 80sec
• Auto calibration at power-up (keypad must not be touched for 0.5 seconds after power-up)

To connect it to any controller board, you need to power the module by VCC and GND pins. You can select the modes using jumper wires and connect it to the Microcontroller using either I2C buses to save the number of pins or digital output pins if you want to replace the mechanical buttons.

DHT22/AM2302 Digital Temperature & Humidity Sensor is a premium quality Humidity & Temperature Sensor. You can buy this Sensor from Robu.in at a reasonable price.

All DHT22/AM2302 Digital Temperature & Humidity Measurement Sensor, TECH1120 are manufactured by using quality assured material and advanced techniques, which make them up to the standard in this highly challenging field.

DHT22/AM2302 Digital Temperature & Humidity Sensor is a low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analog input pins needed).

It’s fairly simple to use but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so sensor readings can be up to 2 seconds old. Simply connect the first pin on the left to 3-5V power, the second pin to your data input pin, and the rightmost pin to the ground. Although it uses a single wire to send data it is not Dallas One Wire compatible! If you want multiple sensors, each one must have its own data pin!

Additional Information:

• Item Code: normal
• Production Capacity: standard
• Delivery Time: standard
• Packaging Details: standard

The DS3231 RTC module is a low-cost real-time clock that is commonly used with microcontrollers to keep track of real-world Date and Time. The module consists of two important ICs namely DS3231 and AT24C32 IC with a crystal oscillator, and a temperature sensor. The Time, Date and Temperature value from the module can be sent to a microcontroller like Arduino via I2C communication.

The AT24C32 IC present on the module has 32KB EEPROM which can be used to save the data even after a power off. The module uses the RTC IC DS3231 as a timekeeping device. The module calculates and maintains the time as seconds, minutes, hours, days, date, month, and year. If the days present in a month is less than the 31 days, the data will automatically be adjusted.

The module also incorporates a lithium cell, to provide power supply during power down. Normally module uses an external power supply but when there is no external power supply available, the module switches to use the onboard battery. This helps the module to keep track of the time and maintain accuracy even when the module is not in use. The clock operates in either 24 hours or 12 hrs format with AM and PM indications.  Along with time and data calculation, the module can also be used to generate a square wave output of 1Hz frequency. battery. 

Specifications of the DS3231 RTC module:

•  Operating voltage ranges from 3.3V to 5.5V
• Consumes only 500nA on battery backup
• I2C interface (maximum transferrable speed is 400KHz @ 5V supply  voltage)
• Highly Accurate RTC Completely manages All Timekeeping Functions
• Low power Operations Extends battery-Backup Run Time
• Programmable Square-Wave Output Signal
• Digital temperature sensor with ±3ºC accuracy
• CR2032 battery backup with two to three year life

Additional Resources:

• DS3231 Datasheet
• AT24C32 Datasheet
• Interfacing DS3231 with Arduino
• Interfacing DS3231 with PIC

Contents: 

• Module

The ESP8266 NodeMCU CP2102 board has ESP8266 which is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.

ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application-specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including the front-end module, is designed to occupy minimal PCB area.

The ESP8266 NodeMCU development board – a true plug-and-play solution for inexpensive projects using WiFi. The module arrives pre-flashed with NodeMCU firmware so they’re ready to go – just install your USB driver (below). ESP-12 Lua Nodemcu WIFI Dev Board Internet Of Things board contains a full ESP8266 WiFi module with all the GPIO broken out, a full USB-serial interface, and a power supply all on the one breadboard-friendly package.

This board is pre-flashed with NodeMCU – a Lua-based firmware for the ESP8266 which allows easy control via a neat scripting language – Lua – so you’re ready to go in just a few minutes.
The ESP-12 Lua NodeMCU WIFI Dev Board Internet Of Things with ESP8266 is an all-in-one microcontroller + WiFi platform that is very easy to use to create projects with WiFi and IoT (Internet of Things) applications.

The board is based on the highly popular ESP8266 WiFi Module chip with the ESP-12 SMD footprint. This WiFi development board already embeds in its board all the necessary components for the ESP8266 (ESP-12E) to program and upload code. It has a built-in USB to serial chip upload codes, 3.3V regulator, and logic level converter circuit so you can immediately upload codes and connect your circuits.

1. 11 b/g/n Wi-Fi Direct (P2P), soft-AP
2. Integrated TCP/IP protocol stack
3. Open-source, Interactive, Programmable, Low-cost, Simple, Smart, Wi-Fi-enabled
4. Arduino-like hardware IO
5. Integrated low-power 32-bit CPU
6. Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
7. Code like Arduino, but interactively in Lua script.
8. Nodejs style network API
9. Event-driven API for network applications,
10. which facilitates developers writing code running on a 5mm*5mm sized MCU in Nodejs style.
11. Greatly speed up your IOT application development process.
12. Lowest cost WI-FI
13. Less than WI-FI MCU ESP8266 integrated and easy to prototyping development kit.
14. We provide the best platform for IoT application development at the lowest cost.
15. Integrated TR switch, balun, LNA, power amplifier, and matching network
16. Integrated PLL, regulators, DCXO, and power management units
17. Onboard USB to serial chip to easily program and upload codes from the Arduino IDE
18. Embeds logic level converter circuits
19. Has an onboard 3.3V regulator to ensure enough power to function as your go-to WiFi chip!
20. Easy access to the GPIO pins for easy prototyping
21. Easy to use breadboard friendly form factor
22. Voltage Regulator / Converter, excellent DC to DC conversion, super-efficient

1 x ESP8266 NodeMCU12E Lua WIFI Dev Board

Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor technologies and electronic assembly techniques. One such example is the Thermoelectric Peltier Refrigeration Cooling System Kit.

The kit is a semiconductor cooling kit which uses a TEC1-12706 Thermoelectric Cooler 6A Peltier Module. The kit has 2 heat sinks: the bigger one is for the hotter side and the smaller one is for the cooler side. The bigger the heat sink, the greater dissipation of the heat.

The fan, also included in this kit acts as a radiator. This is attached to the bigger heat sink. The TEC1-12706 thermoelectric Peltier module is sandwiched between the two heat sinks. The module will reduce the temperature.

The kit when assembled takes up less space and is ideal for Pet Space air conditioning( dogs house, chicken, etc),  small refrigerator.

1. Using GL style of the refrigerator, effectively release the thermal deformation ability of the refrigerator produce at work.
2. Small volume, does not occupy space, installation is simple.
3. This semiconductor cooler is a form of solid-state cooling that incorporates both semiconductor technologies and electronic assembly techniques.
4. It can be used as a Pet Air Conditioner (chicken, little dog, etc.) or a little fridge.

Thermoelectric Peltier Refrigeration Cooling System DIY Kit

ESP32-S WiFi+BT SoC Module

This wireless module based on ESP32, supports WiFi and Bluetooth 4.2, with built-in 32Mbit Flash, in the SMD38 package.  In short, it’s a small form factor and a fairly high cost-effective wireless module.

With the pre-flashed AT firmware, you can control the module through UART AT commands easily. The module integrates MCU inside, supports other developments like Lua/Micropython/Arduino to achieve flexible and fast prototyping, makes it easy to integrate the module into IoT applications.

ESP32-S WiFi+BT SoC Module has a highly competitive package size and ultra-low power technology. Esp32-S can be widely used in various networking, for home automation, industrial wireless control, baby monitors, wearable electronics products, wireless position sensing devices, wireless positioning system signals, and other networking applications. Esp32-S is packaged in SMD, through the standard SMT equipment to achieve rapid production of products, to provide customers with high reliability of the connection, especially for Automation, large-scale, low-cost modern production methods, It’s suitable for all kinds of Internet of things hardware terminal occasions.

The ESP32-S suit for many IoT applications such as:

1. Smart home
2. Intelligent building
3. Industrial automation
4. Wearable devices
5. IP camera
6. Intelligent agriculture

Features

1. The smallest 802.11b/g/n WiFi BT SoC Module
2. Low power 32-bit CPU, can also serve the application processor
3. Up to 160MHz clock speed，Summary computing power up to 600 DMIPS
4. Overview built-in 520KB SRAM
5. Supports UART/SPI/I2C/PWM/ADC/DAC
6. SMD-38 package for easy welding
7. Support for OpenOCD debugging interface
8. Deep sleep current as low as 6.5μA
9. Embedded Lwip and FreeRTOS
10. Supports STA/AP/STA+AP operation mode
11. Support Smart Config/AirKiss technology
12. General AT commands can be used quickly
13. Support for serial port local and remote firmware upgrades (FOTA)

Package Includes

1 x ESP32-S WiFi+BT SoC Module

The E18-D80NK Adjustable IR Sensor Proximity Switch 3-80cm Range is a set of transmitter and receiver in one of the photoelectric switch sensor. The detection distance can be adjusted according to the demand. The sensor has a detection range of 3-80cm.

The Adjustable Infrared Sensor Switch is small, easy to use, inexpensive, easy to assemble and can be widely used in a robot to avoid obstacles, interactive media, industrial assembly lines, and many other occasions.

The switching signal output differs in accordance with the obstacles. It remains high when no obstacles and remains low when there are obstacles. There is a bright light behind the probe to detect the scope of 3cm – 80cm.

Connections:-

• Red wire: +5V
• Green wire: GND
• Yellow wire: Digital output

                OR

• Brown wire: +5V
• Blue wire: GND
• Black wire: Digital output.

Specifications and Features of E18-D80NK Adjustable IR Sensor Proximity Switch 3-80cm Range:-

• Less influence on the color of reflected objects, reflectivity.
• Compact size.
• Industrial grade quality.
• Can detect colour difference from certain range.
• TTL output low whenever sensor senses a obstacle.
• Adjustable Detection distance of 3cm to 80cm.
• External control circuit unnecessary.
• Low cost.
• Output indication LED.
• Digital output.
• Low consumption.

1. Main chip: LM393
2. Working voltage: for DC 5V
3. Single-channel signal output
4. Low-level output signal used for human body touch sensor alarm
5. Adjustable sensitivity
6. Pin Connector to board: 4 Pins

KY-036 Metal Touch Sensor Module Specifications

• Working Voltage: 5V
• Low cost, Low Power Device
• Adjustable Sensitivity with onboard potentiometer
• Digital and Analog Output

Product Description

As this is a 5V Module, You need to connect VCC Pin to 5V Supply and You can take the Digital Output from DO Pin and connect it to any GPIO Pin on your controller. The module will give output High when touch is detected and Low otherwise.

BFD 1000 specifically designed as a black line (white) XunQu, especially suitable for the complex of black and white line, cross black and white line detection, it has 6 roads high sensitivity infrared sensor (5 escapes patrol, 1 road), to the recognition of black and white line accurately, it has the following functions and features:-
1. BFD 1000 integrated no.5 high sensitivity tracking sensor, for the environmental impact of small, can accurate tracking to complex black line (white line), for the simple black line tracking more comfortable.
2. BFD 1000 integrated infrared Barrie sensor, escapes distance can be regulated through the slide rheostat.
3. BFD 1000 has a specially designed touch detection sensor, from the design of the robot is more simple.
4. BFD 1000 all of the output signal to a digital signal (v), conveniently connected with MCU.
5. All sensor output state BFD 1000 have LED lights as instructions, convenient debugging.
6. BFD 1000 support voltage of 3.0-5.5 v meet the demand of most systems.
7. Using the high sensitivity of the sensor, tracking range between 0.5 mm to 40 mm any change and dont need to do any adjustment.

Features:

1. 5 channel high sensitivity sensor
2. High accuracy for tracking black line.
3. Distance sensor at the front, distance can be adjusted
4. Special touch sensor design, making the robot design simple
5. Digital output signal
6. Indicator LEDs

1 x BFD-1000 Five Channel Infrared Tracking Module

This is a Thermal Sensor Relay Module. It uses a temperature detection via potentiometer adjustment to a valve to control the corresponding temperature with relay output, directly connected to the AC high-power products.

1. Supply voltage: 5VDC
2. Current: greater than 150mA
3. Switching Voltage: 250VAC@10A; 30VDC@10A.
4. Specifications :-

   Operating Voltage (VDC)	3.3 ~ 5
   Maximum Voltage(V)	5V DC
   Maximum Operating Current (A)	0.15
   Trigger Voltage (VDC)	5
   Switching Voltage (VAC)	250@10A
   Switching Voltage (VDC)	30@10A
   Operating Temperature (C)	-40 to 100
   Opt. Relative Humidity(RH)	20% 85%
   Storage condition ()	-40 to 125
   Length (mm)	50
   Width (mm)	26
   Height (mm)	17
   Weight (gm)	16

The IoT enabled projects require two way communication between the microcontroller and various sensors. There are various methods you can do that, Wired Communication, WiFi, Bluetooth are some among them. The HC-05 Bluetooth Module adds wireless communication to your project to communicate via Bluetooth to any Bluetooth enabled Laptop or Mobile Device. The module communicates at 9600 baud rate via USART protocol. It can be used in applications like communication between two microcontrollers, data logging, wireless robots, wireless sensors data acquisition and home automation.

• Profiles: Bluetooth serial port Profile
• Dimension: 26.9mm x 13mm x 2.2 mm
• Bluetooth protocol: Bluetooth Specification v2.0+EDR
• Frequency: 2.4GHz ISM band, Range
• Modulation: GFSK (Gaussian Frequency Shift Keying)
• Sensitivity: -84dBm at 0.1% BER
• Speed: Asynchronous: 2.1Mbpsmax / 160 kbps, Synchronous: 1Mbps/1Mbps
• Emission power: 4dBm, Class 2
• Power supply: +3.3V, 50mA
• Security: Authentication and encryption
• Working temperature: -20°C to +75°C

The module has two operating modes Data mode and Command Mode. To connect it with your Arduino or Raspberry Pi connect the TX and RX pins to the controller and power the device with VCC pin connected to 5V pin.  While in data mode it can send or receive the data from other Bluetooth devices and in command mode it will change default device settings.

• Industrial Applications
• GPS receiver
• Computer and portable Devices
• Embedded Projects

Datasheet of HC-05 Bluetooth Module

HC-05 based Arduino Project

1×HC-05 Bluetooth Module

The QAV250 is a mini-size quadcopter frame. This frame is built specifically to tackle the problems in FPV Racing and video recording with quadcopters. This frame is known for its toughness and durability.

This QAV250 Quadcopter Frame is made from Carbon Fiber which makes it tough and durable. The carbon fiber arms of thickness 3mm which ensure no more arm breakage at the motor mounts on a hard landing. The arms have dampers at the end, which protects motors during the crash.

The carbon fiber is mostly accepted material for frame designing because of its high stiffness to weight ratio. The Carbon Fiber Frames are very rigid and improve stability and flight performance.

The frame is lightweight and possesses thick arms, so as to give them good mechanical strength. The mini-size design of this quadcopter frame makes it aerodynamically efficient which will require lower throttle to hover. The design allows the whole take-off weight to be controlled at about 500-600 grams!!!! Great!!!!!

The frame has a wheelbase of 250mm and weighs around 160gm. It features a very large area on the mainframe for mounting cameras and other accessories. This frame supports 37mm board cams as well as cams in cases with mounting bracket.

It’s longer top and bottom plate allow easy mounting of HD cameras and batteries. so more spacious room for all kinds of electronics!!!

The Q250 Carbon Fiber Quadcopter Frame equips anodized alloy spacers. The arms of this carbon fiber frame feature multiple motor mounting holes so as to fit a variety of motors. It equips a vibration-free mounting bracket for housing the camera on the frame.

We are offering a full line of multi-rotor accessories,
Multirotor Motors
ESC’s (Electronic Speed Controller)
Orange Li-PO Batteries
Flight Controllers
FPV Cameras
Gimbals
Propellers
Remotes

Or explore more variety of multirotor accessories by clicking below
Multirotors

You can also check our following Multirotor Kits category if you are a beginner or just not willing to send lot much of time in selecting appropriate parts for your quadcopter and want your quad in the air as soon as possible,
Multirotor Kits

Note: The dimensions and weight may have  ±2% error.

1. Lightweight and Durable.
2. Made by super strong and advanced engineering material.
3. The frame has excellent strength.
4. The arm has multiple motor mounting holes.
5. Equips vibration-free mounting bracket for FPV camera.

3 x Quadcopter Frame Plates(top, bottom, and center).
4 x Strong carbon fiber arm.
8 x Aluminum column.
4 x Rubber Shock absorbing Ring.
1 x Camera lens holder.
1 x Set of Screws and Nuts

IR Sensor module has great adaptive capability of the ambient light, having a pair of infrared transmitter and the receiver tube, the infrared emitting tube to emit a certain frequency, encounters an obstacle detection direction (reflecting surface), infrared reflected back to the receiver tube receiving, after a comparator circuit processing, the green LED lights up, while the signal output will output digital signal (a low-level signal), through the potentiometer knob to adjust the detection distance, the effective distance range 2 ~ 10cm working voltage of 3.3V-5V. The detection range of the sensor can be adjusted by the potentiometer, with little interference, easy to assemble, easy to use features, can be widely used robot obstacle avoidance, obstacle avoidance car assembly line count and black-and-white line tracking and many other occasions.

Features of IR Sensor Module:-

• When the module detects obstacles in front of the signal, the circuit board green indicator light level, while the OUT port continuous output low-level signals, the module detects a distance of 2 ~ 10cm, detection angle 35 °, the detection distance can be potential adjustment with adjustment potentiometer clockwise, the increase in detection distance; counterclockwise adjustment potentiometer, the detection distance decreased.
• the sensor active infrared reflection detection, target reflectivity and shape of the detection distance of the key. The black minimum detection range, white maximum; small area object distance is small, a large area from the large.
• The sensor module output port OUT can be directly connected with the microcontroller IO port can also be driven directly to a 5V relay; Connection: VCC-VCC; GND-GND; OUT-IO.
• The comparator using LM393, stable.
• 3-5V DC power supply module can be used. When the power is turned on, the red power LED is lit.
• With the screw holes of 3mm, easy to install.
• Board size: 3.1CM * 1.5CM.
• Each module in the delivery has threshold comparator voltage adjustable via potentiometer, special circumstances, please do not adjust the potentiometer.

Interface(3-wire):-

• VCC external 3.3V-5V voltage (can be directly connected with the a 5v microcontroller and 3.3v microcontroller).
• GND external GND.
• OUT board digital output interface (0 and 1).

The 20A Range Current Sensor Module ACS712 consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field in which the Hall IC converts into a proportional voltage.

Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc.

This ACS721 current module is based on the ACS712 sensor, which can accurately detect AC or DC current.

The maximum AC or DC that can be detected can reach 20A, and the present current signal can be read via analog I / O port of Arduino.

1. The low-noise analog signal path
2. Device bandwidth is set via the new FILTER pin
3. 5 µs output rise time in response to step input current
4. Small footprint, low-profile SOIC8 package
5. 2.1 kV RMS minimum isolation voltage from pins 1-4 to pins 5-8
6. 5.0 V, single-supply operation
7. 66 to 185 mV/A output sensitivity
8. Output voltage proportional to AC or DC currents
9. Factory-trimmed for accuracy
10. Extremely stable output offset voltage
11. Nearly zero magnetic hysteresis
12. The ratiometric output from the supply voltage.

The module is equipped with the ZMCT102 series of small high-precision current transformers and high-precision op-amp circuits for accurate sampling and proper compensation of signals. It is convenient for signal acquisition of AC power within 5A. The corresponding output analog AC signal can be adjusted. The required output voltage can be adjusted according to the potentiometer (adjusting the amplification ratio, the amplification range is 0-100 times), but the maximum voltage at the output (OUT) will not exceed 1/2 VCC. Tags, ZMCT102 AC Current Sensor Module, ZMCT102, ZMCT102, 20A range single-phase AC active, 20A Current Sensor, Current Sensor, 20A Current Transformer Module, 20A Current Sensor. Sharvielectronics Tags, ZMCT102, ZMCT103E, ZMCT103C

• Manufacturer Part No: ST2010SM1349
• Manufacturer: SHARVI TECHNOLOGIES (OPC) PRIVATE LIMITED
• Model: ZMCT102
• Input Current : 0  ~ 20 Ampere (100Ω)
• Output Current: 2.5mA at 5 Ampere
• Turns ratio: 2000:1
• phase angle Error: Input 1 A, Sampling Resistor 100Ω
• Linearity: ≤0.2%
• Permissible error -0.2%≤f≤+0.2%
• Isolation Voltage: 4500 Volts
• Frequency Range: 50/60Hz
• Operating Temperature: -40℃ ~ +85℃
• Connector Pitch: 2.54mm
• Length: 38 mm
• Width: 25 mm
• Height: 23 mm
• Weight: 10 gm

• Measuring AC currents
• Monitor any current surges
• Ground fault detection
• Household electrical equipment

• 1 x ZMCT102 – 20A Range Single Phase Current Transformer Module – 2.54mm JST Connector

In most of the IoT devices and Battery Management Systems, measuring how much current is flowing in the circuit is paramount. It decides the capacity of the battery to be used and predict the run time of the battery pack. It is also crucial in the design of safety systems or any circuit to ensure the correct rating of the components is selected. The ACS712-5A Current Sensor Module is a Hall Effect based sensor module to determine the current flowing in a given line. It can measure both AC and DC current up to 5A in both directions. Its output when no current is flowing through it is 2.5V and its scale factor is 185mV/A i.e. if 2A current is flowing through it, then its output will be 2.87V.

The output becomes zero if the max 5A current flows in the reverse direction and if 5A flows in the forward direction, the output will tend to 5V. It also provides isolation from the load as it is Hall Effect Based sensor, so you don’t need to worry about putting an extra load in the circuit to measure current. You should select the current sensor module according to the maximum current you want to measure. You can also check the 20A Current Sensor and 30A Current Sensor.

• 185 mV/A output sensitivity
• 5.0 V, single-supply operation
• Output voltage proportional to AC or DC currents
• Factory-trimmed for accuracy
• Extremely stable output offset voltage
• Nearly zero magnetic hysteresis
• Analog Output so can be easily connected to any Microcontroller.

To connect ACS712 Current Measuring Module, you need to first power it with a 5V power supply either from a battery or your controller like Arduino. Connect the sensor in series with the line carrying the current you want to measure. The output of this module is Analog, so you need to connect to ADC pins of the controller. Read the voltage and convert it into the current by using the formula.

ACS712 Current Sensor Module Datasheet

Digital Ammeter with a PIC Microcontroller

Buy the new XH-M131 DC 12V Light Control Switch Photoresistor Relay Module. The Light Detection and brightness detection, detection can be adjusted via potentiometer brightness valve point comes relays, and do all kinds of brightness detection switch, you can control all kinds of street lights automatically turn on at night, during the day and automatically turns off and car supplies control and automation equipment.

Using the photoresistor induction light intensity comes with the relay and direct control load. It has a Distribution bit sensitivity adjustment. The start relay threshold is set by adjusting the potentiometer. 12 V power input is designed for relay board regulator transistors to provide sensors and is Used to make the product more stable and reliable. It has four fixed bolt hole for easy installation.

1. XH-M131 DC 5V / DC 12V Light Control Switch Photoresistor Relay Module Light threshold can be adjusted by a potentiometer to set the relay start Input: DC5V / 12V
2. Load capacity: 10A / AC 250V or DC up to 30V RED LED ON: Indicate the Power ON
3. BLUE LED ON: Relay is working Module output terminal has three ports.
4. Weight: approx 20 g Material: Steel, Plastic, PVC

This MPR121 is a capacitive touch sensor controller driven by an I2C interface. The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode The MPR121 also features eight LED driving… pins, when these pins are not configured as electrodes, they may be used to drive LEDs.There a four jumpers on the bottom of the board, all of which are set (closed) by default. An address jumper ties the ADD pin to the ground, meaning the default I2C address of the chip will be 0x5A. If you need to change the address of the chip (by shorting ADD to a different pin), make sure you open the jumper first. Jumpers also connect SDA, SCL, and the interrupt pin to 10k pull-up resistors. If you do not require the pull-up resistors you can open the jumpers by cutting the trace connecting them.

1.  Capacitive touch sensor controller driven by an I2C interface.
2. Can control up to twelve individual electrodes, as well as a simulated thirteenth electrode.
3. Eight LED driving pins.
4. Connection to the microcontroller /microprocessor via I2C bus.

It works as RFID reader/writer,1443-A card or a virtual card and also supports NFC with Android phone. It is also compatible with Arduino.

1. Support II2, SPI and HSU (High-Speed UART)
2. I2C / UART: 3.3V ~ 24V TTL
3. SPI: 3.3V TTL with 100-ohm resistors in series
4. Communication distance: 5cm~7cm
5. On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI
6. Work in NFC Mode or RFID reader/writer Mode
7. RFID reader/writer supports:
8. Plug and play, compatible
9. Built-in PCB Antenna, with 4cm~6cm communication distance
10. On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI
11. Work as an RFID reader/writer
12. Work as a 1443-A card or a virtual card
13. Exchange data with other NFC devices such as a smartphone

1 x PN532 NFC RFID Wireless Module V3

This is an easy to use digital soil moisture sensor. Just insert the sensor in the soil and it can can measure moisture or water level content in it. It gives a digital output of 5V when moisture level is high and 0V when the moisture level is low in the soil. 

The sensor includes a potentiometer to set the desired moisture threshold. When the sensor measures more moisture than the set threshold, the digital output goes high and an LED indicates the output. When the moisture in the soil is less thatn the set threshold, the output remains low. The digital output can be connected to a micro controller to sense the moisture level. The sensor also outputs an analog output which can be connected to the ADC of a micro controller to get the exact moisture level in the soild.

This sensor is great for making water gardening projects, water sensing, etc.

This is a 4 switch digital touch sensor with capacitive sense technology, the TTP 224 IC offers capacitive sense input feed designed for touchpad control, followed by a 4- finger-sized touchpad. The board has a jumper’s arrangement to change the keypress output mode in Timed or Toggle, Active High or Active Low. Separate jumper adjustments are provided for changing the response time of the pressed key: 60mS fast mode or 160mS in Low power. The output side of the board has 6 pin headers, with 4 pins to be connected with the digital I/O of any microcontroller board (Arduino, ARM STM32). 4 status LED SMD types are provided to check the status of each pressed key. TTP 224 4 Channel Digital Touch Sensor is compatible with all Arduino’s board. The board finds applications in HMI(Human-machine Interface), mechanical Button key replacement.

1. TTP224 4-way switch digital touch capacitive touch sensor module
2. 4 keyboard TTP224 capacitive touch sensor IC
3. Onboard 4-level status indicator

If you want to Apply  Extra Security for your house then this Magnetic Switch is needed for you. This magnetic switch is used for triggering an alarm or ON/OFF light inside a cupboard sliding door

MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System can be used as a door or window security system. It produces the signal when moved away from each other which can be fed to the microcontroller to perform the desired action as per requirement.

This sensor is suitable to use for triggering an alarm or ON/OFF light inside a cupboard sliding door. This wired sensor is triggered by the magnet. When the magnet is closed by, the circuit is closed or open if the magnet is far from the sensor.

Connection Diagram of MC-38 With Arduino:

1. Easy to install
2. Strong concealment
3. Magnetic sensor alarm, control the switch of the circuit via the built-in magnet
4. Alarm when someone intrudes into your places
5. Can be used in places like apartments, hotels, offices, etc.
6. Ideal for residential or commercial use.
7. Designed to do embedded in the door or window frame.

The Small Float Level Control Switch Plastic Float Switch is a type of level Small Float Level Control Switch Plastic Float Switchsensor, a device used to detect the level of liquid within a tank. It is a simple structure, easy to use level control device; moreover, it is neither a complicated circuit nor does it provide power. This switch has a mechanical switch than the average small-sized switches.

As long as the material used is in the correct shape and nature of any liquid or pressure, you can control the temperature. Applications of this Switch include the shipbuilding industry, generating equipment, petrochemical and food industry, water treatment equipment, dyeing, and finishing industry, and hydraulic machinery.

1. Long-lasting life.
2. Easy to use.

• Working voltage:DC 5V
• Working Current: 150mA
• DOUT: TTL output
• AOUT: Analog output
• Preheat time: Over 20s
• Dimension: 32mm x 22m x 27mm(HIGH 27mm)

ECG Muscle Sensor Module V3.0 With Cable And Electrodes will measure the filtered and rectified electrical activity of a muscle; outputting 0-Vs Volts depending the amount of activity in the selected muscle, where Vs signifies the voltage of the power source. Power supply voltage: min. +-3.5V.

This Muscle Sensor v3 measures, filters, rectifies, and amplifies the electrical activity of a muscle and produces an analogue output signal that can easily be read by a microcontroller, enabling novel, muscle-controlled interfaces for your projects.

Specifications & Features of ECG Muscle Sensor Module V3.0:-

• Diameter of Electrode Pad: 52 mm
• Cable Length: 2 feet
• Weight: 30gm.
• Improved adjustable gain (more rugged)
• Onboard port for new cables Connects to the board straight out of the box
• Power Supply : Normally ±9V dual power supply, minimum voltage is ±3.5V
• Supported with Arduino, Breadboard mountable
  
  

• To use this sensor, the user must have three electrodes connected to the subject’s body.
• The reference electrode should be placed on an inactive section of the body, such as the bony portion of the elbow, shin or forearm. This electrode should be connected to the black or brown cable.
• The two other electrodes should be placed along the muscle selected to be measured. The second electrode should be placed along the mid-length of the muscle; this electrode should be connected to the red cable.
• The last electrode should be placed at the end of the muscle and connected to the blue cable.
• Finally, connect pin SIG to an analogue input pin of your microcontroller and the GND pin to the ground pin on your microcontroller.

BMP180 Sensor is an extremely precise low cost sensor from Bosch for measuring barometric pressure and temperature. Because pressure changes with altitude you can also use it as an altimeter! The sensor is soldered onto a PCB with a 3.3V regulator, I2C level shifter and pull-up resistors on the I2C pins. It is completely identical to the BMP085 in terms of firmware/software. 

Features:-

• Vin: 3 to 5VDC
• Logic: 3 to 5V compliant
• Pressure sensing range: 300-1100 hPa (9000m to -500m above sea level)
• Up to 0.03hPa / 0.25m resolution
• -40 to +85°C operational range, +-2°C temperature accuracy
• This board/chip uses I2C 7-bit address 0x77.

Buy the new XH-M131 DC 12V Light Control Switch Photoresistor Relay Module. The Light Detection and brightness detection, detection can be adjusted via potentiometer brightness valve point comes relays, and do all kinds of brightness detection switch, you can control all kinds of street lights automatically turn on at night, during the day and automatically turns off and car supplies control and automation equipment.

Using the photoresistor induction light intensity comes with the relay and direct control load. It has a Distribution bit sensitivity adjustment. The start relay threshold is set by adjusting the potentiometer. 12 V power input is designed for relay board regulator transistors to provide sensors and is Used to make the product more stable and reliable. It has four fixed bolt hole for easy installation.

1. XH-M131 DC 5V / DC 12V Light Control Switch Photoresistor Relay Module Light threshold can be adjusted by a potentiometer to set the relay start Input: DC5V / 12V
2. Load capacity: 10A / AC 250V or DC up to 30V RED LED ON: Indicate the Power ON
3. BLUE LED ON: Relay is working Module output terminal has three ports.
4. Weight: approx 20 g Material: Steel, Plastic, PVC

This ultrasonic sensor is very similar to the ultrasonic sensors which are found in cars. This Waterproof Ultrasonic Obstacle Sensor shows some important constructional advantages over the conventional sensors. It comes in two separate parts one being the transducer which is the sensing element and the other being the control board.

The module is capable of providing information of the objects between the distance range of 250 mm to 4500 mm. The great advantage of using this Waterproof Ultrasonic Obstacle Sensor is you can put the sensing element far away from all the control circuitry.

This Ultrasonic Distance Sensor is an industrial-grade sensor to measure distance. Interfacing with it is the same as another cheap ultrasonic sensor, but it offers better performance and is compatible with harsher environments and is waterproof too! It can be easily interfaced with Arduino and Sample codes and projects are available.

There are many ultrasonic distance sensors on the market, but sometimes, this kind of sensor needs to work in vulnerable conditions. This Waterproof Ultrasonic Obstacle Sensor meets this requirement. It has a good performance and almost the same usage of an HC-SR04 module.

It is very easy to use, a control port with a 10US above high level can wait for high-level output at the receiving port. An output can drive the timer when this port is low can read the timer value, this time for the location of the time can be distance measurement. Constantly cycle tests that can achieve the measurement of the value of your mobile.

1. Turn on TRIG Pin to 5V for at least 10uS
2. The module will then automatically send 8 40KHz tones and automatically detect when the signal return after reflecting back from the object
3. Upon detecting the signal, a high-level signal is outputted through the IO Pin ECHO. By keeping track of the time duration between transmitting and receiving the signal, the distance can be calculated. Distance = (Time to Receive Reflected Signal * speed of sound (340M/S)) /2

Wiring

5V – 5V
RX
TX
GND – GND

1. Horizontal distance
2. Obstacle avoidance, automatic control
3. Traffic control
4. Security, industrial control
5. Artificial intelligence, and research.

1. Small size, easy to use.
2. Low voltage, low power consumption.
3. High accuracy.
4. Strong anti-jamming.
5. Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions.

1 x Waterproof Ultrasonic Obstacle Sensor, with 2.5m Separate Probe

As long as the material used is in the correct shape and nature of any liquid or pressure, you can control the temperature. Applications of this Switch include shipbuilding industry, generating equipment, petrochemical and food industry, water treatment equipment, dyeing, and finishing industry, and hydraulic machinery.

1. Long-lasting life
2. Easy to use

This L298 Based Motor Driver Module is a high power motor driver perfect for driving DC Motors and Stepper Motors. It uses the popular L298 motor driver IC and has the onboard 5V regulator which it can supply to an external circuit. It can control up to 4 DC motors, or 2 DC motors with directional and speed control

This motor driver is perfect for robotics and mechatronics projects and perfect for controlling motors from microcontrollers, switches, relays, etc. Perfect for driving DC and Stepper motors for micro mouse, line following robots, robot arms, etc.

An H-Bridge is a circuit that can drive a current in either polarity and be controlled by Pulse Width Modulation (PWM).

Pulse Width Modulation is a means of controlling the duration of an electronic pulse. In motors try to imagine the brush as a water wheel and electrons as the flowing droplets of water. The voltage would be the water flowing over the wheel at a constant rate, the more water flowing the higher the voltage. Motors are rated at certain voltages and can be damaged if the voltage is applied to heavily or if it is dropped quickly to slow the motor down. Thus PWM. Take the water wheel analogy and think of the water hitting it in pulses but at a constant flow. The longer the pulses the faster the wheel will turn, the shorter the pulses, the slower the water wheel will turn. Motors will last much longer and be more reliable if controlled through PWM.

Features:-

• Driver chip: L298 dual H-bridge driver chip.
• Operates up to 35V DC
• Drive part of the peak current Io: 2A / Bridge
• Logical part of the terminal power supply range Vss :4.5V-5.5V
• Logical part of the operating current range: 0 ~ 36mA
• Maximum power consumption: 20W

Pins:-

• Out 1: Motor A lead out
• Out 2: Motor A lead out
• Out 3: Motor B lead out
• Out 4: Mo (Can actually be from 5v-35v, just marked as 12v)
• GND: Ground
• 5v: 5v input (unnecessary if your power source is 7v-35v, if the power source is 7v-35v then it can act as a 5v out)
• EnA: Enables PWM signal for Motor A (Please see the “Arduino Sketch Considerations” section)
• In1: Enable Motor A
• In2: Enable Motor A
• In3: Enable Motor B
• In4: Enable Motor B
• EnB: Enables PWM signal for Motor B 

Usage:-

H-bridges are typically used in controlling motors speed and direction but can be used for other projects such as driving the brightness of certain lighting projects such as high powered LED arrays.

Pulse Sensor is a low cost, very small size a plug-and-play heart rate sensor for Arduino and Arduino compatible boards. It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heart-rate data into their projects.

Pulse Sensor Amped adds amplification and noise cancellation circuitry to the hardware. It's noticeably faster and easier to get reliable pulse readings. Pulse Sensor works with either a 3V or 5V Arduino. 

* Product Images are shown for illustrative purposes only and may differ from actual product.

Additional Information:

• Item Code: standardd
• Production Capacity: standard