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• Fully compatible with interface extensions.
• Address can be modified through I2C and communication.
• It can connect 2 steering gear and output PWM drive directly.
• Up to 4 bi-directional DC motors
• Up to 2 stepper motors (unipolar or bipolar)
• 4 H-Bridges: TB6612 chipset provides 1.2A per bridge  (3A for brief 20ms peaks) with thermal shutdown protection, internal kickback protection diodes. Can run motors on 4.5VDC to 13.5VDC
• 2 connections for 5V 'hobby' servos connected to the Arduino's high-resolution dedicated timer - no jitter!
• Big terminal block connectors to easily hook up wires (18-26AWG) and power
• Tested compatible with Arduino UNO, Leonardo, ADK/Mega R3, Diecimila & Duemilanove. Works with Due with 3.3v logic jumper. Works with Mega/ADK R2 and earlier with 2 wire jumpers

• 16x2 LCD & keypad shield for Arduino
• Utilizes the extremely common HD44780 parallel interface chipset
• Interface code is freely available
  • uses 4 Bit For Arduino LCD Library
• Blue Backlight with white words (screen contrast adjustment)
• Reset button
• Its Up, Down, Left, Right buttons use only one analog input
• Size:8cm x 5.9cm - 3.15inch x 2.32inch

• Examples of uses (lien)
• Module schematic (jpg)
• Arduino compatible
• 2 push-button
• 2 Led (red and blue)
• 1 Led RGB
• 1 IR receiver
• 1 Brightness sensor module
• 1 LM35D temperature sensor module
• 1 Passive buzzer module
• 1 Rotary potentiometer module
• 1 DHT11 temperature and humidity sensor module
• 1 I2C interface (A4 SDA, A5 SCL)
• 1 TTL serial port
• 2 channel digital ports (D7, D8)
• 1 channel analog port (A3)
• 1 Reset button

The multifunction shield features some most useful electronics divided into segments:

• Four LEDs
• Three pushbuttons
• A reset button
• A piezo-buzzer
• An LED display module (four-digit, seven-segment)
• Two serial LED display driver ICs(74HC595)
• A multi-turn trimpot (10K)
• A port for DS18B20 temperature sensor
• A port for TSOP1838 infrared receiver module
• A APC220 wireless module interface (serial/UART interface)

• 1 Channel
  • NO and NF
• Arduino compatible
• Working voltage 5V 
• LED indicator

• High sensitivity sound detection module with 2 Outputs (1 analog and 1 digital)
• Voltage: 3.3 to 5 VDC
• Frequency response: 50 Hz - 20 KHz
• Sensitivity: 48 - 66 dB

• Schematic (PDF)
• Pinout (PNG)

• Transparent Acrylic Box
• Compatible for arduino UNO R3
• 6cm x 7.5cm x 1.7cm

• Schematic (PDF)
• Pinout (PNG)