introduction to MPR121, mpr121 working, mpr121 pinout, mpr121 applications, mpr121 features, mpr121 Hello friends, I hope you all are doing great. In today's tutorial, we are gonna have a look at detailed Introduction to MPR121. MPR121 is a touch sensor controller, its working is like the capacitor's working principle. This module has twelve electrodes points, it communicates via I2C protocol. Whe ...