ADK is a compact controller based on Android devices, compatible with Google ADK. It can be developed using Google's ADK and runs on Android 2.3.4 or Android 3.1. Multiple sensors and application modules can be connected, such as Hall sensors, button modules, thermistors, accelerometers, LDRs, potentiometers, touch sensors, joystick sensors, and MOSFET modules. Quality: Made from high-quality materials, safe and durable. Specifications: Controller: ATmega2560 Working Voltage: 5V Input Voltage: 7-12V Limit Voltage: 6-15V Digital I/O Ports: 54 (including 14 PWM outputs) Analog Input Ports: 16 I/O Port Output Current: 40 mA 3.3V Power Supply Output Current: 100 mA Flash Memory: 256 KB (8 KB used by bootloader) SRAM: 8 KB EEPROM: 4 KB Crystal Frequency: 16 MHz Material: PCB Color: Blue Package Contents: 1 x Development Board 1 x USB Cable Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3 cm.