hey guys i have a project about IC PT2256, thats IC was Audio volume digital potentiometer.
the IC dont have I2C connection but only need 2 button that bridge them to groung.
I wondering can control the IC with NodeMCU, so what must i do? making virtual ground or virtual button
if make virtual button, NPN Transistor as switch or Relay Module
datasheet_4.pdf (73.1 KB)