This keyboard uses an analog input to read the five key state which saves IO resource for the Arduino. It can be used together with our I/O expansion boards to make amazing interactive project. Specification * Supply voltage: 5V/3.3V * Interface: Analog * Size: 55x33mm Documents * Wiki Doc * Schematics Shipping List * ADKeyboard x1 * Analog Sensor Cable x1 https://elecena.pl/product/22714023/gravity-analog-adkeyboard-module-v2-discontinued 2023-03-06 https://elecena.pl/product/22714023/gravity-analog-adkeyboard-module-v2-discontinued 2024-09-19