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The Latest ESP-12F ESP8266 Wifi Module AP & Station Remote Serial Wireless IoT Board is an integrated chip designed for the needs of a new connected world. It can handle all the necessary overhead for communicating with your network, such as TCP/IP stack and communicating with your 802.11 networks.

It is completely addressable over SPI and UART protocols allowing you to connect your sensors or project directly to it through its GPIO’s. ESP8266 is a low-cost Wi-Fi chip with full TCP/IP stack and MCU (Micro Controller Unit) capability.

ESP8266 Serial Wifi Wireless Transceiver Module is a self-contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. ESP8266 Serial Wifi Wireless Transceiver Module is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor.

Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost-effective board with a huge, and ever-growing, community.

ESP8266 Serial Wifi Wireless Transceiver Module has a powerful enough onboard processing and storage capability that allows 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, including the front-end module, is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existence interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions and requires no external RF parts.

Specifications & Features of ESP-12F ESP8266 Wifi Wireless Module:-

• Communication interface voltage: 3.3V
• Working current: 240mA(MAX)
• Serial port baud rate: 115200 (default), can be modified to other values by AT command
• Serial communication format: 8N1
• Wireless Network Mode: station / softAP / SoftAP + station
• Wireless criteria: 802.11 b / g / n
• Compatible with ESP-12ESP-202
• WIFI @ 2.4 GHz, support for WPA / WPA2 security mode
• It is very easy to develop projects with AT commands
• Surface Mount Package with 2mm Pitch Pads
• Mulitple GPIO’s for all your sensor needs
• Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, DCXO and power management units
• +19.5dBm output power
• Power down leakage current of <10uA
• Integrated low power 32-bit CPU could be used as an application processor
• SDIO 1.1/2.0, SPI, UART
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation & 0.4ms guard interval
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)
• Both SMD and Inline package are available, and the pin pitch is 2.0mm.

he All new NodeMcu ESP8266 V3 Lua CH340 Wifi Dev. Board is a fast leading edge low-cost WiFi technology. Modern high-level mature LUA based technology. It is an integrated unit with all available resources on board. It is super simple to complement your existing Arduino projects or any development board that has I/O pins available.

Modern Internet development tools such as Node.js can take advantage the NodeMCU with the built-in API to put your idea on the fast track immediately. NodeMCU is built based on the mature ESP8266 technology to take advantage of the abundant resources available on the web.

NodeMCU has ESP-12 based serial WiFi integrated on board to provide GPIO, PWM, ADC, I2C and 1-WIRE resources at your fingertips, built-in USB-TTL serial with super reliable industrial strength CH340 for superior stability on all supported platforms. This module is one of the cheapest available wifi-modules in the market. V3 or Version3 is the latest version of this module. This tutorial, however, will facilitate you to connect all the versions of ESP8266 NodeMcu, i.e V1, V2 or V3.

1. Arduino-like hardware IO – Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware. Code like Arduino, but interactively in Lua script.
2. Nodejs style network API Event-driven API for network applications, which facilitates developers writing code running on a 5mm5mm sized MCU in Nodejs style. Greatly speed up your IOT application developing process.
3. Development Kit The Development Kit based on ESP8266, integrates GPIO, PWM, IIC, 1-Wire and ADC all on one board. Power your development in the fastest way combination with NodeMCU Firmware!

The NodeMcu is an open-source firmware and development kit that helps you to prototype your IoT product with few Lua script lines. The Development Kit based on ESP8266, integrated GPIO, PWM, IIC, 1- Wire and ADC all in one board.based on ESP8266, integrated GPIO, PWM, IIC, 1- Wire and ADC all in one board.

1. Uses CH340G instead of CP2102.
2. Wireless 802.11 b/g/n standard
3. WiFi at 2.4GHz, support WPA / WPA2 security mode
4. Support STA/AP/STA + AP three operating modes
5. Built-in TCP/IP protocol stack to support multiple TCP Client connections (5 MAX)
6. Support UART / GPIO data communication interface
7. Remote firmware upgrade (OTA)
8. Support Smart Link Smart Networking
9. ESP8266 has IO Pin
10. Don’t need to download resetting
11. A great set of tools to develop ESP8266
12. Lowest cost WI-FI
13. FOR Arduino like hardware IO
14. Greatly speed up your IOT application developing process
15. Open-source, Interactive, Programmable, Low cost, Simple, Smart, WI-FI enabled
16. WI-FI MCU ESP8266 integrated and easy to prototyping development kit.
17. We provide the best platform for IoT application development at the lowest cost.
18. NodeMCU has built-in USB-TTL serial with super reliable industrial strength CH340G for superior stability on all supported platforms.
19. Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
20. Event-driven API for network applications, which facilitates developers writing code running on a 5mm*5mm sized MCU in Nodejs style.

1 x NodeMcu ESP8266 V3 Lua CH340 Wifi Dev. Bo

CR2032 CR2025 Coin Battery Socket Holder, a Plastic Holder small size, easy to carry, save power and protect environment With the CR2032 CR2025 General Button Battery Holder Case, best for Soldering /Connecting

CR2032 / CR2025 Holder Generally used for holding 3v Lithium coin batteries. PCB mountable 3v Battery holders which can be soldered directly to PCBs. It is very Easy to install and use.

Can be used for experimental boards, toys and small robots etc. It is also suitable for 3V Lithium Coin batteries used in Laptops / Computers / Notebooks etc.

1. CR2032 / CR2025 Holder
2. Generally used for holding 3v Lithium coin batteries.
3. PCB mountable 3v Battery holders which can be soldered directly to PCBs.
4. Can be used for experimental boards, toys and small robots etc.
5. It is also suitable for 3V Lithium Coin batteries used in Laptops / Computers / Notebooks etc.

• Best for arduino, power bank, DIY work etc
• Storage Box Case With Wire Lead
• Wires Color: red and black, the red cable contact the positive side of the aa battery holder case, and the black cable contact the negative side of the aa battery holder case.
• Package include :-1X 18650 battery holder
• The package does not include battery of any type, only the cover.

ESP32 Development board is based on the ESP WROOM32 WIFI Module.It’s a low-footprint, minimal system development board powered by the latest ESP-WROOM-32 module and can be easily inserted into a solderless breadboard.

It contains the entire basic support circuitry for the ESP-WROOM-32, including the USB-UART bridge, reset- and boot-mode buttons, LDO regulator and a micro-USB connector. Every important GPIO is available to the developer.

Applications:

1. Universal low power IoT sensor hub.
2. Home automation.
3. Universal low power IoT recorder.
4. Mesh network.
5. Video streaming of the camera.
6. Industrial wireless control

1. Small volume, easily embedded to other products
2. Strong function with support LWIP Protocol, Freertos
3. Supporting three modes:  AP, STA, and AP+STA
4. Supporting Lua program, easily to develop
5. Includes CP2102 USB-UART bridge

1 x ESP WROOM 32 MCU Module

This is a 0.56inch 0-100V Three Wire LED Display Digital DC Voltmeter-RED.

This is All new tiny and compact digital voltmeter with a RED LED Display. The 0.56inch 0-100V Three Wire DC Voltmeter Red Panel requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!!

The red wire is to connect to the positive pole, the black wire is to connect to negative pole and the yellow/white wire is to connect to the positive pole of that source or another source across which we meant to measure the voltage. While measuring the supply voltage of another source make sure that the negative pole is joined common. No need to worry even if there is any connection mismatch of the wires, the electric circuit won’t be a boom because it features reverse polarity protection.

To reach the best measurement accuracy, this voltmeter will automatically move the decimal point’s position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point.

This 0.56inch 0-100V Three Wire DC Voltmeter can be used to measure the storage battery’s voltage upto 100Volts in motorcycles and cars and also can grasp the storage battery’s status. It also can be used to measure other DC voltage. This voltmeter can operate on versatile 4.5V to 30VDC range is the voltmeter’s maximum operating limited voltage, please leave enough margin (i.e. do not reach up to last limit which is 30V ) when working, to avoid voltmeter’s permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage.

Very bight and decent LED Display  Voltmeter is ready to measure the dc voltages in the range of 0V to 100V.

Note:

1. Consider 1V voltage drop at voltmeter itself, as we observed it at robulabs while testing this Voltmeter.
2. Product Image may vary in terms of colour 3rd Wire and PCB or PCB-layout as per the version update from the manufacturer.

1. Red Wire: Positive of the Power supply
2. Black Wire: Negative of the Power supply and also used as the negative of the measurement voltage source
3. Yellow/White/Blue: Positive of the measurement voltage source.

With this Voltmeter Measurement can be done in two different scenarios observe the connection illustration accordingly:

CASE 1: If you have only one power source to give Power as well as to measure the voltage 

CASE 2: If you have to measure the voltage of another source then with a separate power supply for Voltmeter:

1. Very small and lightweight voltmeter module.
2. Very handy and easy to use.
3. Red LED display.
4. Best operates in the working voltage range of 5V to 24V
5. Recommended (Robulabs) device Operating Voltage: 5V DC
6. Matt finish Display glass makes display Digits more Lucid in the daytime.
7. 100% Brand new and high quality.

1 x 0.56inch 0-100V Three Wire DC Voltmeter-Red

Want to controller stepper Motor from Arduino, Raspberry Pi or any other Micro-controller? Well then this stepper motor driver will simplify your coding and will give you more flexibility in controlling the stepper motor.

The DRV8825 stepper motor driver carrier is a breakout board for TI’s DRV8825 micro-stepping bipolar stepper motor driver. The DRV8825 features adjustable current limiting, over-current and over-temperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 – 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling).

This product is a carrier board or breakout board for TI’s DRV8825 stepper motor driver; we therefore recommend careful reading of the DRV8825 datasheet before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to 2.2 A output current per coil. 

This is Tiny RTC Real Time Clock DS1307 I2C IIC Module for Arduino. It contains a DS1307 real-time clock IC with a backup battery. It’s one of the easiest to use RTCs out there, with Arduino and other libraries or simply use I2C commands to set and retrieve the time and date. Includes a lithium coin cell battery which should be good for four years at least.

Along with the DS1307 real-time clock, the module also has an Atmel 24C32 EEPROM chip which is handy for storing data without worrying about power loss. There is also space on the board to solder your own DS18B20 temperature sensor.

This battery-powered clock allows you to keep a reasonably accurate time even when your Arduino is powered off.  It is very useful in data logging and other time-sensitive applications. The device uses I2C to communicate with your Arduino.

Note: Battery is not included in the package, you need to buy it separately.

1. Two-wire I2C interface
2. Hour: Minutes: Seconds AM/PM
3. Leap year compensation
4. Accurate calendar up to the year 2100
5. Consumes Less than 500nA in Battery-Backup
6. 1Hz output pin
7. 56 Bytes of Non-volatile memory available to the user
8. 4KB of serial electrically erasable and programmable read-only memory (EEPROM)
9. Embed DS18B20 temperature sensor interface with the pull-up resistor.

The L298P Motor Driver Shield for Arduino is probably one of the most versatile on the market and features an onboard male header for an ultrasonic sensor connected to digital pins D7 & D8, female header for the Bluetooth module, servo header connected to pin D9, male headers connected to PWM pins D3, D5, D6. That makes it a great shield for any robotic project.

This Arduino compatible motor Driver shield is a full-featured product that it can be used to drive 2 DC motor or one 4-wire stepper and one 5v servos. It drives the DC motor and stepper with the L298P, the shield drives motors with digital pins D10, D11, D12, D13, and servo with digital pin D9.

Arduino Boards
Servo Motors
DC Motors
28BYJ-48 Stepper Motor

1. The board with L298P motor drive chip, directly with the motherboard digital I/O port (D10, D11, D12, D13), without cumbersome wiring.
2. Onboard buzzer (D4), you can set the reverse alarm ringtones.
3. A convenient motor interface, can be divided into two motor outputs.
4. Two-way Bluetooth interface, you can directly plug, no wiring.
5. D2, D3, D5, D6, D7, D9 are not occupied by the digital interface.
6. A 0 – A 5 six analog interfaces.
7. Forward and Backward steering are indicators.

• Dual channel stereo output 3 w + 3 w power Class D
• Works with 2.5V-5v power supply
• High amplification efficiency 85%
• can directly drive 4 O/8 O small speakers
• Good sound quality  & noise suppression
• Unique without LC filter class D digital power board
• Can use computer USB power supply directly
• Small Size, 1.85 x 2.11 cm   can easily fit in a variety of products

• Input audio should be via shielded wire for best performance.
• Use proper filtered power supply with good filter capacitors.
• Take care not to short speaker wires else IC will get damaged.
• Make sure power supply never execeds 5.5V else IC will get damaged. Use regulated power supply.

This versatile DC-DC boost power supply/converter module steps up any input voltage from 10V to 32V to any output voltage from 12V to 35V at up to 150W output power and 6A current.

This 150W DC-DC Boost Converter 10-32V to 12-35V 6A Step-Up Adjustable Power Supply is well into the heavy-duty end of the spectrum @ 150W; as you can tell by the huge toroidal inductor and dual heatsinks.

It is especially useful for automotive 12V applications, where standard 12V battery power can be boosted to 19V for use as a laptop computer power supply, or to 18V or 24V for other applications requiring higher voltages.

Please note there is no reverse polarity protection. A series diode is recommended. For high loads this might not be an option; so be cautious of the input polarity or you might fry the module!

1. DIY adjustable output vehicle power supply. Provide 12V input, the output voltage can be continuously adjusted from 14V to 35V (output voltage cannot be lower than the input voltage).
2. Universal car laptop power supply. Provide 12V input, the output voltage is adjustable to your notebook to work. Can easily drive dual-core or quad-core notebooks at 19V and up to 6A output current.
3. Boost Charger, to convert your car’s 12V power to greater than 12V, such as 18V or 24V
4. Power supply for your electronic devices, as long as the voltage is adjusted to the voltage and does not exceed the module’s rated current.

Note:

1. Set the output voltage to the desired level using a voltmeter before connecting it to your equipment or load.
2. Short circuit protection: None, please use caution to protect the module from overcurrent
3. Input reverse polarity protection: None, please use a diode in series with the input to protect against input reverse polarity

Note : Standoff shown in image discontinued from supplier .

1. The non-isolated step-up power conversion module
2. Onboard LED illuminates when the voltage is applied to the module
3. Equips Multi-turn Potentiometer.
4. Easy to drive 65W 90W dual-core notebook.
5. The output voltage is continuously adjustable on OUT+ and OUT- screw terminals (Output voltage must be greater than input voltage)

1 x 150W 10-32V to 12-35V 6A DC-DC Boost Converter Module

This is a 5V Dual Channel Relay Module with Optocoupler for Arduino PIC ARM. It can be used to control various appliances and other types of equipment with a large current. It can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).

This 5V Dual Channel Relay Module has a 1×4 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays.

The pins are marked on the PCB as:

• GND – Connect 0V to this pin.
• IN1 – Controls relay 1, active Low Relay will turn on when this input goes below about 2.0V
• IN2 – Controls relay 2, active Low Relay will turn on when this input goes below about 2.0V
• VCC – Connect 5V to this pin. Is used to power the optocouplers

1. High-level trigger refers to the signal voltage between input and trigger, can be understood as a signal input with VCC cathode short-circuit triggered a way;
2. Low-level trigger refers to the signal voltage between the input terminal and Earth OV trigger, can be understood as the signal input terminal and the GND negative electrode short circuit triggered away  1-channel relay module connection

Jumper Instruction = The relay can be turned on when we connect 5v to one end and the other to -5v / Gnd, while talking about the jumper, if we short the VCC and the middle pin, then our relay will act as high level-triggered relay means that when we will apply + 5V input on its input pin it will be turned on and when the jumper will be set to “middle and GND”, it will act as a low-level triggered relay, It means that relay will be triggered when we implement the 5V / GND on its input pin.

1. 2 LEDs to indicate when relays are ON.
2. Works with logic level signals from 3.3V or 5V devices
3. Opto isolation circuitry
4. Module with diode current protection, short response time
5. Around the board with 4 mounting holes, hole diameter 3. 1 mm, easy installation and fixing

1 x 2 Channel isolated 5V 10A relay module with Optocoupler

It is an 8 Channel Isolated 5V 10A Relay Module opto coupler, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc. It is also able to control various appliances and other types of equipment with a large current. Relay output maximum contact is AC250V 10A and DC30V 10A.

One can connect a microcontroller with standard interface directly to it. Red working status indicator lights are conducive to the safe use. The 8 Channel Isolated 5V 10A Relay Module opto coupler has a wide range of applications such as all MCU control, industrial sector, PLC control, smart home control.

So, ready to get switching on your Raspberry Pi?! This neat relay module features 8 x 12V relays rated at 10A/250V each. It is designed to switch up to 4 high currents (10A) or high voltage (250V) loads with the help of microcontroller!

Each relay can individually switch to on/off state. It only requires a voltage of approx 1.0V to switch the inputs on but can handle input voltages up to 12V. This makes it ideal for 3.3V, 5V & 12V devices.

1. High-level trigger refers to the signal voltage between input and trigger, can be understood as a signal input with VCC cathode short-circuit triggered away;
2. Low-level trigger refers to the signal voltage between the input terminal and Earth OV trigger, can be understood as the signal input terminal and the GND negative electrode short circuit triggered away  1-channel relay module connection.

1. Power supply and relay instructions, lit, the disconnect is off;
2. The input signal, signal, common Terminal and start conducting;
3. Useful for appliance control;
4. DC or AC signal, control, you can control the 220V AC load.
5. One normally closed contact and one normally open contact
6. Triode drive, increasing relay coil
7. High impedance controller pin
8. Pull-down circuit for the avoidance of malfunction
9. Power supply indicator and Control indicator lamp
10. The module is compliant with international safety standards, control and load areas isolation trenches.

1 x  8 Channel Isolated 5V 10A Relay Module opto coupler For Arduino PIC AVR DSP ARM

A GL-12 840 Points Solderless Breadboard is an invaluable tool for experimenting with circuit designs whether in the R&D or university lab. A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components.

Parts will not be damaged so they will be available for re-use afterward. 840 Tie points – 128 Groups of 5 connected terminals, 8 Bus of 25 connected terminals Reusable for fast build a prototype of an electronic circuit – will accept transistors, diodes, LEDs, resistors, capacitors and virtually all types of components – No soldering required – Can modify or revise the circuits easily Fit for jumper wire of 0.8mm diameter – Standard 2.54mm hole spacing Adhesive sheet on the back side of the board – Multiple breadboards can be spliced together too.

1. 100% brand new and high quality
2. Practical and useful
3. Solderless breadboard with 840 points
4. Completely reusable and have a self-adhesive back
5. Easy component placement

1 x GL-12 840 Points Solderless Breadboard

The SYB-170 Mini Solderless Breadboard is named for its 170 tie points. It has 17 columns of 10 holes, which are separated into two pairs by a central notch, and labeled 1 to 17. Each column is also labeled, with a letter from A to J to that they can be easily referenced in instructions ( like the squares on a chess board ).

It has a peel and sticks adhesive backing as well as two mounting holes for M2 screws so you can anchor it down.

This solderless, re-usable breadboard is made from sturdy ABS plastic housing. Great for prototyping, testing and creating add-on modules or new circuits. It’s standard nickel plated spring clips ensure longevity and firm grip. As a single unit, the PTBB-170W provides one large (170) tie-point IC circuit terminal strip.

If you run out of space, the PTBB-400W can be pair with additional breadboards (below) to accommodate larger projects. Works with LEDs, transistors, diodes, capacitors, and resistors.

1. Use: experimental, testing, robot
2. Matching jumper, diameter 0.8mm
3. Accepts 20-29 AWG wire sizes.
4. Adhesive-backed for permanent mounting.
5. Phosphor bronze nickel plated spring clips

1 x 170 pts Mini Breadboard SYB-170 White

ST-Link V2 Programmer For STM8 and STM32 is fully consistent with the official version, support for automatic upgrades, support the full range STM32 SWD (only 4pins including SWCLK, SWDIO, and power) and a full range STM8 SWIM (only 4pins including SWIM, Reset and power) download and debug.

Use this device to send program code to the 32-bit STM32 ARM Cortex or 8-bit STM8 microcontrollers. The header for this ST-Link v2 programmer contains connections for 5V, 3.3V, SWCLK, SWDIO, SWIM, Reset (RST/NRST) and GND. The connector on the opposite side of this device is a USB connector and is intended to be plugged into the computer.

1. ST-LINK Utility 2.0 and above.
2. STVD 4.2.1 and above.
3. STVP 3.2.3 and above.
4. IAR EWARM V6.20 and above.
5. IAR EWSTM8 V1.30 and above.
6. KEIL RVMDK V4.21 and above.

1. PCB installed inside of aluminum alloy U disk shell, portable, safe and reliable!
2. Interface definition directly marked on the shell, clear, convenient and practical!
3. 5V, 3.3V offers at the same time, allowing you to program your target board with both 5V and 3.3V
4. Shell characters using laser engraving, never fade off! Permanent clarity!
5. 500MA internal resettable fuse, complete protection of your expensive computer motherboard!
6. Red and blue color LED indicator, allowing you to always observe ST-LINK V2 working condition!
7. With 4 DuPont line, so you can easily respond to different target board line order!
8. Use anti-static bag packaging.
9. SWIM specific features:
   • SWIM cable for connection to the application via a pin header or a 2.54 mm pitch connector
   • 1.65 V to 5.5 V application voltage supported on SWIM interface
   • SWIM low-speed and high-speed modes supported
   • SWIM programming speed rate: 9.7 Kbytes/s in low speed and 12.8 Kbytes/s in high speed
   • SWIM cable for connection to the application
10. Direct firmware update feature supported (DFU)
11. Status LED which blinks during communication with the PC
12. Operating temperature 0 to 50°C

1 x ST-Link V2 Programmer For STM8 and STM32.

1 x Connecting Wires.

This RS775 12V Base DC Motor is a high RPM compact size DC Base Motor. The main application of this motor is to build low RPM; high torque DC motors which are achieved by including gear-box reduction. We can decrease a base motor RPM by arranging an extra gear-box. The application areas of this motor are printers, fuel pumps; electric vehicles, solar airplane, electric aircraft, and propulsion systems so on so forth.

Main uses :

•  Household Appliances: Electric curtain, Intergrated cooker, Coffee maker, Intelligent closestool, Sweeping robot, Dish-washing Machine, Cooker hood, Electric lock.
• Hair Care: Hair Curler, Massager, Electric Hair Clipper.
• Office Equipment: Shredder, Printer, Projector, Counting Machine.
• Medical Equipment: Massager Chair, Electric trolley, Medical pump, Electric bed, Ventilator, Electric wheelchair.
• Industrial Equipment: Water valve, Electrical valve, Gas valve, Air switch, Automatic door, Automatic
  lubrication equipment.
• Business Equipment: Vending Machines, Parking locks, ATM machines, stage lights.
• Intelligent Robot: Mechanical Arm, UAV(Unmanned Aerial Vehicle), Servic

Specifications:

• Voltage: 12V DC.
• Speed: 18000 RPM.
• Torque: 80 m.Nm Approx
• Output Power: 30w.
• Rated current (mA): 2000
• Shaft diameter: 3.1 mm.
• Shaft length: 8.5 mm.
• No-load current: 0.80A.
• Stall current: 14A
• Efficiency: 70%

Packing List:

1 x Rs775 18000Rpm Dc Motor 12V

Additional Information:

• Delivery Time: standard

• 1.8 inch full color TFT LCD display screen with 128X160 resolution.
• Equipped with ST7735 driver and micro SD card slot supporting 3.3V and 5V voltage input.
• Serial communication interface with pinout for Arduino UNO/MEGA/Nano development board display projects.
• Module Size: 70 X 40 X 30mm/2.76 X 1.57 X 1.18inch(L*W*H)Shipped out by USPS with tracking information and 7-17 days delivery time usually.

Additional Information:

• Production Capacity: standard
• Delivery Time: standard

DS3231 RTC  is a Precise Real-Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C.

The DS3231 RTC module Precise Real-Time Clock Module is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input and maintains accurate timekeeping when the main power to the device is interrupted.

The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The ds3231 Arduino is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package.

1. Two Time-of-Day Alarms.
2. Digital Temp Sensor Output.
3. Register for Aging Trim.
4. DS 3231 RTC with 2032 Battery Holder.
5. Highly Accurate RTC Completely Manages All Timekeeping Functions.
6. Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year, with Leap-Year Compensation Valid Up to 2100.
7. Configurable I2C device Address for AT24C32 using SMD jumpers on PCB (A0, A1, A2).
8. Programmable Square-Wave Output Signal.
9. Battery-Backup Input for Continuous Timekeeping.
10. Low Power Operation Extends Battery-Backup Run Time.

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. 

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.

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).

This is a 0.28 Inch 0-100V Three Wire DC Voltmeter 

This is a tiny and compact digital voltmeter with a blue LED Display. The 0 to 100 V 0.28-inch Digital Voltage Tester DC VOLTMETER requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!!

The red wire is to connect to the positive pole, the black wire is to connect to the negative pole and the yellow/white wire is to connect to the positive pole of that source or another source across which we meant to measure the voltage. While measuring the supply voltage of another source make sure that the negative pole is joined common. No need to worry even if there is any connection mismatch of the wires, the electric circuit won’t be a boom because it features reverse polarity protection.

To reach the best measurement accuracy, this 0.28 Inch 0-100V Three Wire DC Voltmeter Blue will automatically move the decimal point’s position according to the different measuring voltages. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point.

Very bright and decent LED Display is ready to measure the dc voltages in the range of 0V to 100V. It is small in size and light in weight, quite easy and convenient to carry out. Its small size which is only 0.28″ with bright and sharp blue light visible LED display, easy to read even in dim light and low operating voltage.

This 0.28 Inch 0-100V Three Wire DC voltmeter Blue can be used to measure the storage battery’s voltage in motorcycles and cars and also can grasp the storage battery’s status. It also can be used to measure other voltages. 100V is the voltmeter’s maximum operating limited voltage, please leave enough margin when working, to avoid the voltmeter’s permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage.

1. 2-power source (Red and Black) line with the highest input voltage cannot exceed 100V, otherwise, there is the risk of burnt.
2.  Three-line voltage range 0-100V, but also can be used as second-line use in 40V voltage to within Technical parameters

1. Very small and lightweight voltmeter module.
2. Very handy and easy to use.
3. Blue LED display.
4. Best operates in the working voltage range of 5V to 24V
5. 100% Brand new and high quality.
6. No direct exposure to sunlight
7. product stability, high accuracy

1 x 0.28 inch 0-100V Three Wire DC Voltmeter 

This is 5V 4-Channel Relay interface board, be able to control various appliances and other equipment with large current. It can be controlled directly by Microcontroller (for Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). This is 0~2.5V triggered Low Level Trigger 4 Channel Relay Module.

1. 5V 4 Channel Relay interface board and each one needs 15-20mA Driver Current.
2. Equipped with high-current relay, AC250V 10A; DC30V 10A.
3. Standard interface that can be controlled directly by microcontroller (for Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
4. Indication LED’s for Relay output status.

1 x 5V 4 Channel Relay Module.

400 Tie Points – Solderless Breadboard is a high-quality breadboard with power lanes and printed top face for easy prototyping.

A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components.

It is Reusable for fast build a prototype of an electronic circuit – will accept transistors, diodes, LEDs, resistors, capacitors and virtually all types of components – No soldering required – Can modify or revise the circuits easily Fit for jumper wire of 0.8mm diameter – Standard 2.54mm hole spacing Adhesive sheet on the backside of the board – Multiple breadboards can be spliced together too.

1. 400 tie points
2. 1 Double strip, Total 300 tie points
3. 2 Power lanes, Total 100 tie points in power lanes
4. Perfect for Arduino shield prototyping and testing
5. Plastic housing, metal contact clips

1 x Solderless 400 pin breadboard

Amass XT30-U Female Bullet Connector. For the tiny Measurement, It could take a small area and could place anywhere. This Connector Made from high-temp Nylon and gold-plated bullet connectors, both included in the injection mold at the time when forming the connector. Product coating is 24K real gold, the thickness of 0.05um, plug thousands of times, the coating will not fall off, prevent oxidation, good electrical conductivity.

1.  It is perfect for small lipo applications.
2.  This Connector Made of high-temperature nylon the plug is also less likely to deform or melt.

1 x Amass XT30U Female Bullet Connector

USB terminals are one of the most used terminals to power the electronic devices from battery  chargers like wall charger and battery banks as they are robust and have been in use for many years now and are mainly used in medical equipment, phone chargers, powering development boards and small battery powered devices like dc motors etc. It is hard to read voltage and current flowing through it if something is not working so this USB Current and Voltage Tester which works as Ammeter and Voltmeter both to determine and debug the USB connector. This dongle plugs between the USB connector and output devices. You can use this device from the 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It flips between voltage and current readouts every 3 seconds or so.

USB Current Voltage Tester Specifications

• Compact and easy to use
• Measures Voltage and Current
• Works with PC USB, home charger, car charger
• The wide range of applications
• Used in factories, laboratories, and personal use .

A7672S is the LTE Cat 1 module that supports wireless communication modes of LTE-FDD/GSM/GPRS/EDGE .A7672S supports maximum 10Mbps downlink rate and 5Mbps uplink rate. For more information, datasheet is provided in the ATTACHMENTS section.

• Compact size with abundant interfaces
• Suitable for LTE and GSM networks
• Abundant software functions: FOTA, LBS, SSL
• Form factor is compatible with the SIM7000/SIM7070 series
• Easy to install
• Good quality product

1 x 4G LTE GSM Modem (A7672S)

MQ-6 Liquefied Petroleum Isobutane Propane Gas Sensor module is a great way to add basic gas sensing to your project at a reasonable price. TheMQ-5 Methane LPG Liquid Propane Gas Sensor Module particulate sensor uses a Buzzer to sense any detected material that is even present in the air! 

This is a simple-to-use MQ-6 Liquefied Petroleum Isobutane Propane Gas Sensor module, suitable for sensing LPG (composed of mostly propane and butane) concentrations in the air. The MQ-6 can detect gas concentrations anywhere from 200 to 10000ppm. The MQ-6 Liquefied Petroleum Isobutane Propane Gas Sensor module particulate sensor uses a Potentiometer to change the detection range of the sensor! 

The sensitive material of the MQ-6 gas sensor is a tin oxide (SnO2), which with lower conductivity in clean air. When the target combustible gas exists, The sensor’s conductivity is higher along with the gas concentration rising. Please use a simple electro circuit, Convert the change of conductivity to the corresponding output signal of gas concentration.

MQ-6 gas sensor has a high sensitivity to Propane, Butane, and LPG, also the response to Natural gas. The sensor could be used to detect different combustible gas, especially Methane, which is with low cost and suitable for different applications.

Buck converter is used when you require to step down the DC voltage from a specified value to a lower value in DC voltage. Unlike AC voltage which you can control easily with a transformer, DC voltages are harder to control because you can’t use a transformer to control it and it requires switching regulators to do so. This 300W 10A DC-DC Step-down Adjustable Constant Current Module can be used to get adjustable output voltage ranges from 1.2V to 30V. The module provides a wide range of current output up to 10A. With the heat sink mounted it can easily manage to run high power applications continuously. The module has onboard multiturn potentiometers for high accuracy voltage and current regulation to provide good stability. As voltage and current are adjustable, it gives very easy to use at multiple Application such as battery charging of multiple voltages like 12V, 9V, 3.6V, 24V, LED Driver power supply, Vehicle Power Supply, etc. i.e. it is a multipurpose module.

Specification

• Maximum Power Output: 300W
• Maximum Current Supply: 10A
• Output Voltage Range: 1.2Vdc to 30Vdc
• Step Down (Buck) Converter
• Adjustable Output Voltage .

• Evaluation board for A7670C, A7670E & A7670SA modules made by SIMCOM
• Main supply can take standard 12V DC adapter
• The device supports a LiPo battery input.
• Device supports 4G LTE-CAT1 network only.
• A7670C - Asian band 4G LTE CAT1 module
• A7670E - European band 4G LTE CAT1 module

NOTE : SMA connectors and headers are not soldered on board by default.  

This is a 4G GSM module development board which can be used with Arduino and Raspberry Pi kind of development boards for evaluating the features of SIMCOM A7670 modules. 

This 4G GSM Modem supports 9VDC to 42V DC voltage input on the DC jack input. The extended operating range helps in directly connecting the modem to different power sources like lead acid battery, DC adapters and EV supply. 

There is on board IO level translator for converting the 1.8V UART TX and RX lines of modem to MCU IO voltage level connected to VTRANS pin. 

The A7670x-LASS module has support for Analog audio compared to its predecessor 4G modules like SIM7600 which only had PCM audio interface. You can directly connect a electret MIC to this board as bias circuit is already provided. However for Speaker output you need to use a headphone or amplifier as the signal is weak and needs to be amplified. 

A7670C/A7670E/A7670SA is a very good 4G alternative for 2G modules like SIM900, SIM900A, SIM800 & SIM808. It comes at a very low price and can serve in as a drop in replacement.

Additional Information:

• Delivery Time: standard

With this 16 Channel PCA9685 12-Bit PWM/Servo Controller, you can control 16 free-running PWM outputs with just two pins. Want to make a robot or hexapod walker ? Maybe you''re making a piece of art with tons of moving parts, or you need to drive a ton of LEDs with precise PWM output. Your microcontroller has a limited number of PWM outputs, and you find yourself running out! Need to run more than 16 PWM outputs? No problem. Chain together up to 62 of these beauties for up to an outstanding 992 PWM outputs.

Features:-

• This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers
• Dimensions : 62.5 x 25.4 x 3 mm.
• Weight : 9 gm.
• Terminal block for power input (or you can use the 0.1" breakouts on the side)
• Reverse polarity protection on the terminal block input
• Green power-good LED
• 3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header
• "Chain-able" design
• A spot to place a big capacitor on the V+ line (in case you need it)
• 220 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
• Solder jumpers for the 6 address select pins
• i2c-controlled PWM driver with a built in clock. Unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
• It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)
• 6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs - that''s a lot of servos or LEDs
• Adjustable frequency PWM up to about 1.6 KHz
• 12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate
• Configurable push-pull or open-drain output
• Output enable pin to quickly disable all the outputs

Flex Sensor - 2.2 inch

Flex Sensors are commonly used in Robotic Gloves and other Robotic Control application. It can be used to analyze how much a material is being bent. This flex sensor is 2.2 inch long and has two output leads which acts like a variable resistor. That is the resistance between two pins change based on how much the sensor is bent.  It is commonly used along with another resistor to build a voltage divider circuit and then obtain a variable voltage based on the change in resistance of the sensor.

• Angle Displacement Measurement
• Bends and Flexes physically with motion device
• Simple Construction

Applications:-

• Angle Displacement Measurement
• Bends and Flexes physically with motion device
• Possible Uses
• Robotics
• Gaming (Virtual Motion)
• Medical Devices
• Computer Peripherals
• Musical Instruments
• Physical Therapy
• Simple Construction
• Low Profile

• Flat Resistance: 25K Ohms
• Life Cycle: >1 million
• Flex Length : 2.2 inch
• Temperature Range: -35°C to +80°C
• Resistance Tolerance: ±30%
• Bend Resistance Range: 45K to 125K Ohms (depending on bend radius)
• Power Rating : 0.50 Watts continuous, 1 Watt Peak

1 x Flex Sensor - 2.2 inch

Nylon XT60 more reliable and a better quality connection than Deans T-Connectors. Nylon XT60 provides better protection from short-circuiting the batteries. These connectors are made from high-temp nylon with gold-plated spring pins or sockets moulded in

Pair of connectors used in batteries, e.g.Li-Pol. They have a casing made of materials resistant to high temperatures, and metal connectors ensure correct operation at currents up to 65A.The regulator - battery used in the connections. The set includes a female and male connector.

1. Mechanical mounting for cable
2. Electrical mounting soldered
3. Contact plating Gold flash
4. Spatial Orientation Straight
5. Compatible for Wire size up to 12AWG.

The Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control offers 3 modes to check servos or ESC. The Manual Mode allows you to turn the knob to different speeds and check the reaction time. The Neutral mode makes the servo go back to the neutral point. The Automatic ’’Window Wiper’’ Mode makes the servo swing like a window wiper in the largest angle possible.

Plus, this servo tester can connect to up to 3 servos simultaneously. You can also connect up to 3 ESCs to test and compare their reaction time respectively. Click and order now!

Operation Modes:-

• Automatic mode:- Operates servos to their end point and back “window wiper” mode: Make the servo swing like window wipers in the biggest angle
• Manual mode:- Turn the knob with different speed, check the reaction time
• Neutral / Center mode:- Centers servos to their neutral position Ideal for when setting servos up in a model

Specifications & Features:-

• Operating Voltage: DC 4.8-6V
• Offer 3 modes to check servos or ESC
• The Manual Mode allows you to turn the knob to different speeds and check the reaction time
• The Neutral mode makes the servo go back to the neutral point
• The Automatic ’’Window Wiper’’ Mode makes the servo swing like a window wiper in the largest angle possible
• Connect to up to 3 servos simultaneously
• Connect up to 3 ESCs to test and compare their reaction time respectively
• Built with LED indicators
• Output signal: 1.5ms±0.5ms
• Size: 36.5 x 31.0 x 22mm

CNC 3D Printer Mech Endstop Switch uses a lever switch to detect when it is activated. The switch is wired up so that when activated, it pulls the signal to LOW. There is also an LED on the board that will light up when the switch is activated. It uses a standard 4 pin 100″ pitch header and accepts a standard, old-style CD-ROM audio connector cable.

The mechanical endstop is a simple solution to a simple problem. We want to be able to detect when an X/Y/Z stage has reached its minimum or maximum. Instead of messing with flags or complicated light beam interruption, we use a mechanical switch.

If we place the switch in the path of the stage, then the stage itself will simply close the switch when it moves against it. Other than properly positioning the switch, we do not need to modify the stage at all. If you’re worried about reliability, you can sleep well at night. The switches we use are rated for 1 million operations before failure. Since we only use the switches once per print, that means you’ll be able to do one million prints before having to replace the switch

• Redline: connecting VCC (ramps of +)
• Black line: connecting GND (ramps of -)
• Green Line: connecting SIGNAL (ramps in s) 

1. Not easy to pull off, plug it convenient, for ease of use, plug the other side to do the one, you can use the direct plug.
2. Quality switching elements.
3. Customized high-quality connection wires using 22AWG copper wire with ratings of current 2A, 300V voltage.
4. An insulating layer over a wide range of temperatures, up to 80 degrees.