The HeartBeat library offers a simple heart beat by sending pulses to a digital pin. Typical usage is to blink a (built in) LED as indicator a program is running (alive). Besides a LED other devices ...
Tested with the Robotdyn 16 Keys I2C Capacitive Touch TTP229 Module Robotdyn Capacitive Touch Disk Pad. uint16_t readKeys() - Read data from TTP229 and return states of 16 keys in bitmap ...