The MPR121QR2 Breakout Board is a convenient interface for Freescale's MPR121QR2 capacitive touch sensor controller. It communicates over I2C and can manage up to twelve individual electrodes. Here are the main features and specifications:
Features:
Capacitive touch sensor controller
I2C interface for communication
Control for up to twelve individual electrodes
Simulated thirteenth electrode
Eight LED driving pins (can be configured as electrodes or used for driving LEDs)
Address jumper for setting I2C address (default: 0x5A)
Jumpers for SDA, SCL, and interrupt pin with 10K pull-up resistors
Operating voltage: 2.5V to 3.6VDC
VREG pin at 2.5V with a 0.1uF capacitor to ground
Specifications:
Material: Alloy + Plastic
Application: Capacitive Touch Sensor Controller
Working Voltage: 2.5-3.6V
Dimensions: 6 cm x 3 cm x 2 cm
Note:
The board doesn't have its own voltage regulation, so the supplied voltage should be between 2.5 to 3.6VDC. The VREG pin is set at 2.5V.
This breakout board provides an easy and efficient way to utilize the capabilities of the MPR121QR2 capacitive touch sensor controller, making it suitable for various applications involving touch sensing and control.
