MPR121 Breakout Proximity Capacitive Touch Sensor

From the shop's description

Description The module with the MPR121 system that implements 12 of the capacitive touch buttons. To the holes with the pitch of 2.54 mm, you can connect, using the wires, any conductive elements and create from them the keyboard. The device works with: metal tools, fruits, vegetables and water. The pins are holes for soldering the popular goldpin connectors – 2.54 mm pitch – strap is included in the kit for self-soldering. MPR121 chip works with the voltage from 2.5 V to 3.6 V. The product is compatible with Arduino On GitHub, you can find the user manual along with a library for Arduino. Connection PIN DESCRIPTION VIN Supply voltage from 2.5 V to 3.6 V GND The ground of the system. SCL Clock line of the I2C bus. SDA The data line of the I2C bus. ADDR Change of the address of the I2C bus: ADDR disconnected: 0x5A ADDR connected to 3V: 0x5B ADDR connected to SDA: 0x5C ADDR connected to SCL: 0x5D Specification: Supply voltage: from 2.5 V to 3.6 V Communications: I2C bus The holes are suitable for installation of the goldpin strap, pitch of 2.54 mm (kit for self soldering) Dimensions: 30 x 20 x 2 mm Weight: 2.5 g Useful links User guide MPR121 s ystem documentation