MichaelMeissner:
What you want to look into is called capacitive sensing. Here is the playground post listing the capacitive sensor library: Arduino Playground - HomePageIf you are using the Teensy 3.0/3.1 processors, they have some pins that do capacitive sensing directly: Teensy 3.0 arrived
Adafruit has a stand-alone momentary Capacitive Touch Sensor Breakout: Standalone Momentary Capacitive Touch Sensor Breakout [AT42QT1010] : ID 1374 : Adafruit Industries, Unique & fun DIY electronics and kits and a toggle version: Standalone Toggle Capacitive Touch Sensor Breakout [AT42QT1012] : ID 1375 : Adafruit Industries, Unique & fun DIY electronics and kits. They also have an i2c version that has 8 wires: CAP1188 - 8-Key Capacitive Touch Sensor Breakout - I2C or SPI : ID 1602 : Adafruit Industries, Unique & fun DIY electronics and kits.
Alternatively, you could get a membrane keypad that doesn't require as much force to press: https://www.adafruit.com/products/1333, or various force sensors: https://www.adafruit.com/products/166. Or a photo sensor, that when you put your finger over the sensor reports less light: https://www.adafruit.com/products/161 or a short range proximity sensor: https://www.adafruit.com/products/466.
Hi,
Continuing from MichaelMeissner's comment on using a Standalone Adafruit Capacitive Touch Sensor,
I have been trying to implement its use with a Adafruit Arduino Pro Trinket, with no luck...
Would anyone have any suggestions on setup or layout?
Thank you,
Sam