MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C keyboard
Description:
MPR121 Breakout V12 is a compact and powerful capacitive touch sensor module that allows for up to 12 individual touch-sensitive inputs, making it ideal for creating custom touch panels, interactive surfaces, or even simple I2C keyboards. Based on the MPR121 capacitive touch controller IC from NXP, this module communicates over the I2C interface, making it incredibly easy to integrate into projects using Arduino, ESP32, Raspberry Pi, and other microcontrollers.
Features:
1. 12 Independent Touch Inputs
2. I2C Interface
3. Touch + Release Detection
4. Interrupt Pin (IRQ)
5. Adjustable Sensitivity
6. Compact V12 Breakout Board
7. Low Power Consumption
8. Wide Voltage Compatibility
Diagram:
Specifications:
| IC | MPR121 |
| Touch Inputs | 12 electrodes |
| Operating Voltage | 3.3V to 5V DC |
| Communication Interface | I2C |
| Touch Threshold | Configurable (default: 12) |
| Release Threshold | Configurable (default: 6) |
| Response Time | Fast |
| Interrupt Pin | Active low output (IRQ) |
| Power Consumption | < 29 µA |
| Dimensions | ~26mm x 18mm x 3mm |
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