Interface Modules

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

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

The Digital Sensor TTP223B Module Capacitive Touch Switch is based on a touch-sensing IC (TTP223B) capacitive touch switch module. Allows you to remove the worry of conventional push-type keys.

Digital Capacitive Touch Switch Module is based on TTP223B. Normally, it outputs low and keeps at low power state. When a touch is sensed on the circular marked region, it outputs high and switches to the quick response state. When not being touched for 12 seconds, it switches to low power state again.

If the module is mounted in the surfaces of non-metallic materials such as plastic, glass, acrylic, you can make the keys hidden in the walls and desks.

In addition to the thin paper ( non-metallic ) covering the surface of the module, as long as the correct location of the touch, you can make hidden in the walls, desktops and other parts of buttons.

1. Control Interface: A total of three pins (GND, VCC, SIG), GND to the ground, VCC is the power supply, SIG digital signal output pin
2. Power Indicator: Green LED, power on the right that is shiny
3. Touch area: Similar to a fingerprint icon inside the area, you can touch the trigger finger.
4. Positioning holes: 4 M2 screws positioning hole diameter is 2.2mm, the positioning of the module is easy to install, to achieve inter-module combination.

1. Low power consumption
2. Power supply voltage(VCC): 2.0, 3, 5.5 V.
3. Output high VOH: 0.8VCC V
4. Output low VOL: 0.3VCC V
5. Response time (touch mode) : 60 mS
6. Response time (low power mode) : 220 mS
7. Can replace the traditional touch of a button
8. Four M2 screws positioning holes for easy installation

Touch Sensor Interface:-

• Control Interface: A total of three pins (GND, VCC, SIG), GND to ground, VCC is the power supply, SIG digital signal output pin
• Power Indicator: Green LED, power on the right that is shiny
• Touch area: Similar to a fingerprint icon inside the area, you can touch the trigger finger.
• Positioning holes: 4 M2 screws positioning hole diameter is 2.2mm, the positioning of the module is easy to install, to achieve inter-module combination.

It is a 4 Channel Isolated 5V 10A Relay Module, A wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on can control it. 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. It has a wide range of applications such as all MCU control, industrial sector, PLC control, smart home control.

Ready to get switching on your Raspberry Pi?! This neat relay module features 4 x 5V 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 on/off by an opto-isolated digital input, which that can connect directly to a microcontroller output pin. It only requires a voltage of approx 1.0V to switch the inputs on but can handle input voltages up to 5V. This makes it ideal for 1.0V to 5V devices.

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

The DRV8825 Stepper Motor Driver with Aluminum Heat Sink is a breakout board for TI’s DRV8825 microstepping bipolar stepper motor driver.

The module has a pinout and interface that are nearly identical to those of the A4988 stepper motor driver carriers, so it can be used as a higher-performance drop-in replacement for those boards in many applications.

The DRV8825 features adjustable current limiting, overcurrent, and overtemperature 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).

1. Microstep resolutions: full, 1/2, 1/4, 1/8, 1/16, and 1/32.
2. Simple step and direction control interface
3. Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
4. Adjustable current control lets you set the maximum current output with a potentiometer. Hence lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
5. Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
6. 45 V maximum supply voltage
7. Built-in regulator (no external logic voltage supply needed)
8. Can interface directly with 3.3 V and 5 V systems
9. Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout
10. Short-to-ground and shorted-load protection
11. 4-layer, 2 oz copper PCB for improved heat dissipation
12. Exposed solderable ground pad below the driver IC on the bottom of the PCB
13. Supply Voltage: 8.2 – 42 VDC.
14. Current Capacity : 2.2A max(24V).
15. Continuous current per phase: 1.5 A.
16. Minimum Logic voltage: 2.5V.
17. Maximum Logic Voltage: 5V.
18. Microstep resolutions: full, 1/2, 1/4, 1/8, 1/16, and 1/32.
19. Dimensions : 15 x 20 mm.
20. Weight: 4 gm.

This RS232 to TTL Serial Interface Module is a board with the MAX3232 transceiver integrated circuit (IC). It facilitates serial communication between TTL and RS232 ports by providing the necessary electrical signal conversion.

These boards usually have a DB9 connector soldered at one end, and four header pins for jumper cables at the other end. The jumper cables enable the user to connect the wires to a breadboard or a microcontroller project board, whilst the DB9 connects directly to a COM port of a computer.

The MAX3232 IC, which comes in a 16 pin narrow SO package. It requires between 3.0 V to 5.5 V to operate and has two receivers and two transmitters. It has a maximum guaranteed data rate of 120 kbps, and the circuitry requires four 0.1µF charge-pump support capacitors. It is also compatible with the famous MAX3232 IC pins. These boards connect to systems with a UART  hence, they work with ATMEL and PIC microcontrollers.

MAX3232 RS232 Serial Port To TTL Converter Module DB9 Connector 5V RS232 to TTL + Female Serial TTL + serial modules / Brush board. This module can be used to the serial port of the microcontroller module expand DVD, router, hard drive, and other equipment to upgrade.

1. It is widely used in radio modification, phone flash, XBOX360 flash, GPS, vehicle detection, DVD flash, hard disk repair set-top box upgrade.
2.  It can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU
3. Pre-assembled compact size board
4. Suitable for use with most microcontrollers
5. Operates up to 250 kbit/s

OLED (Organic Light-Emitting Diode) is a self light-emitting technology composed of a thin, multi-layered organic film placed between an anode and cathode. In contrast to LCD technology, OLED does not require a backlight. OLED possesses high application potential for virtually all types of displays and is regarded as the ultimate technology for the next generation of flat-panel display

This 2.44 cm (0.96 Inch) I2C/IIC 4pin OLED Display Module BLUE can be interfaced with any microcontroller using SPI/IIC/I2C protocols. It is having a resolution of 128x64. The package includes display board, display, 4 pin male header pre-soldered to board.

OLED monochrome 128x64 dot matrix display module. The characteristics of this display module are high brightness, self-emission, high contrast ratio, slim/thin outline, wide viewing angle, wide temperature range and low power consumption.

A useful as well as single module to produce dog barking musical sound that can be easily interfaced with speakers and a simple power supply without the need of additional amplifier units. The module has a non-removable chip and easy to connect PCB leads for trouble free soldering solutions.

It can be powered using simple 3-4.5V DC which is suitable for usage of 2 pcs 1.5V batteries if used as indoor bell systems. The output specification requires 0.25W to 2W speakers with 8 Ohms impedance. Inbuilt button or trigger offers one time play if shorted.

Pinouts

Dog Barking Music Chip Features & specifications:

• Good Quality Output
• 3.0-4.5V Operation voltage
• No additional amplifier requires
• Small size PCB to be fitted in very small space during DIY
• 0.25W-2W speaker support with 8 Ohms impedance
• Solder-able pads available in the module

Dog Barking Music Chip Applications:

• Calling bell
• Toys
• Various alerting devices

Dimension

RS485 to TTL Converter Module Serial Port UART Hardware Automatic Flow Control Module is based of MAX485 chip, which is one of the most relied on when working with RS485 Bus. This module supports 3.3 V and 5V power supplies, and TTL Levels. It can connect and identify up to 128 nodes on the RS485 bus. This module also supports very long range of the bus.

This RS485 to TTL Converter Module can support up to 800 meter of bus length. It has connections for RX,TX, +ve and GND, on one side, and other side has connection for RS485 bus. It also has the Indicators for the Receive and Transmit Signals. And, the thickness of PCB is 0.8 mm, which enables it to be used as add-on on any of your PCBs or devices.

• The module is fully considered mine design, long-distance transmission signal 485 in the wild, the module “Connected to the ground” terminal is connected to the earth, can play a very good anti-jamming and anti- effect, more secure; it can not connect with the ground when the indoor short-distance transmission.
• Using the standard 2.54 pitch design, easy secondary development.
• Has a 120 ohm termination resistors, shorted R0to enable the termination resistor.
• Support multi-machine communication, allowing access at up to 128 devices on the bus
• The module can be hot swapped, the signal does not appear dead phenomenon.
• A large area of copper to prevent interference.
• Compatible with 3.3V and 5.0V power supply.
• Compatible with 3.3V and 5.0V signal.
• Absolute using imported chips, industrial design, anti-interference ability, while using more effective mine design can be used in the industrial field and harsh field environments, the working temperature of -40 ° to + 85 ° transmission distance up to 1 kilometer (made with 850 meters of cable F1.5 tests recommended in the 800 meters, more than 800 m, please add repeaters).
• Semi-hole pads, onboard module, thin PCB, having a thickness of 0.8mm.
• Has RXD, TXD signal indicator light, monitor send and receive status.

• Only one in the whole network, 3.3V and 5.0V power supply, RS485 signal perfectly compatible with automatic flow control module.
• Without “Receiving – launch” control, this module is as simple to use with your serial port operations.