I've now done a number of projects using capacitive touch, using a range of methods from native IO handling to the use of the MPR121 and off-the-shelf boards. Typically native IO methods require testing a response between a signal on one IO pin being received on another, with the timing of that response affected by … Continue reading Raspberry Pi Pico Capacitive Touch
Month: June 2023
Arduino PCF8574/8575 MIDI Controller
This project uses a PCF8574 or PCF8575 I2C digital IO expander with an Arduino as a MIDI controller. https://youtu.be/yrNB3riWBH4 Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! These are the key Arduino tutorials for the main concepts used in this … Continue reading Arduino PCF8574/8575 MIDI Controller
Simple DIY Electronic Music Projects 