MPR121, It is a capacitive control card controlled with an I2C interface. There are 12 separate electrode pins. Additionally, LEDs can be driven with 8 of these pins. With this sensor, you can get yourself 12 touch sensors. You can create fun projects such as playing the piano and drums by using it with Arduino or Raspberry Pi.

Technical Details

• Dimensions: 33mm x 19mm x 2mm / 1.3' x .8' x .1'
• Weight: 2.2g
• I2C uses 7-bit address 0x5A (can be set to 0x5B, 0x5C or 0x5D)

Arduino and Raspberry Pi Connection Diagrams

Sample Usage Video