Capacitive Touch Sensor Breakout - MPR121

Product Features The voltage provided should be between 2.5 and 3.6VDC. The  pin is connected to ground with a 0.1uF capacitor, which means you will not be able to run the MPR121 in low supply voltage mode (1.71-2.75VDC) unless you modify the board. Freescale MPR121QR2 expansion board 1PCS x New MPR121 Breakout Box V12 Capacitive Touch Sensor Controller Module I2C Keyboard product description This is a breakthrough board for Freescale's MPR121QR2. The MPR121 is a capacitive touch-sensor controller driven by the I2C interface. The chip can control up to twelve separate electrodes, as well as a simulated thirteenth electrode. MPR121 also has 8 LED driver pins. When these pins are not configured as electrodes, they may be used to drive LEDs. There are four jumpers on the bottom of the board, all of which are set (off) by default. The address jumper connects the ADD pin to ground, which means the chip's default I2C address is 0x5A. If you need to change the chip address (short ADD to another pin), be sure to turn on the jumper first. The jumpers also connect the SDA, SCL and interrupt pins to 10k pull-up resistors. If you do not need a pull-up resistor, you can turn on the jumper by disconnecting the traces that connect them. Not specified on the board, so the voltage should be between 2.5 and 3.6VDC. The  pin is connected to ground with a 0.1uF capacitor, which means you will not be able to run the MPR121 in low supply voltage mode (1.71-2.75VDC) unless you modify the board. Size: 3cm x 2cm. Package Includes: 1PCS x New MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C Keyboard