I2C Keyboard Driver example for the ESP8266 nEXT EVO Board
I2C Keyboard Driver example for the ESP8266 nEXT EVO Board (Timer/scanning version)
A 4x4 Matrix Keyboard is connected directly to the nEXT EVO Board thru the AN-1 8 Bit I/O Extension Port. As the communication with the Board is done on the i2C nEXT Bus no extra ESP8266 pins used.
More details on: http://www.esp8266-projects.com/2016/...