Description:

This is a breakout board for Freescale's MPR121QR2. The MPR121 is a capacitive touch sensor controller driven by an I2C interface
The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode
The MPR121 also features eight LED driving 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 (closed) by default
An address jumper ties the ADD pin to ground, meaning the default I2C address of the chip will be 0x5A. If you need to change the address of the chip (by shorting ADD to a different pin), make sure you open the jumper firs
Jumpers also connect SDA, SCL and the interrupt pin to 10k pull-up resistors. If you don't require the pull-up resistors you can open the jumpers by cutting the trace connecting them
There is no regulation on the board, so the voltage supplied should be between 2.5 and 3.6VDC
The VREG pin is connected through a 0.1uF capacitor to ground, which means, unless you modify the board, you can't operate the MPR121 in low-supply voltage mode (1.71-2.75VDC)
Material: Plastic
Size: approx.30mm*20mm*3mm
Color: Red

Package includes:

	Product Name	Price	Quantity	Amount
	MPR121 Breakout Capacitive Touch Sensitive Module Keyboard for Arduino DIY	Rs.305.76		Rs.305.76
Shippingfee： Included GST： Included Total：305.76

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