MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C keyboard

Specification: Parameter Details Model MPR121 Breakout V12 IC Used MPR121 Capacitive Touch Controller (NXP/Freescale) Number of Touch Inputs 12 electrodes (channels E0 to E11) Communication Interface I2C (2-wire: SDA, SCL) I2C Address Default 0x5A (can be changed with solder jumpers) Operating Voltage 3.3V – 5V (logic level and power supply compatible) Operating Current < 1mA (typical) Touch/Release Threshold Configurable via registers Sensitivity High (individual channel control) Calibration Automatic and manual supported Interrupt Support Yes, via IRQ pin for event detection Temperature Range -40°C to +85°C PCB Dimensions Approx. 26mm × 17mm Mounting Type Breakout module with 2.54mm pin headers Output Type Digital (Touch detection status over I2C) Applications Touch keypads, sliders, musical instruments, wearable interfaces, smart controls, interactive toys   Features: Capacitive touch sensing on 12 independent channels. I2C communicatio