MPR121-BREAKOUT-V12 Near the capacitive touch sensor controller keyboard development board

FreeScale "S MPR121QR2. The MPR121 is a Capacitive Touch Sensor Controller Driven by I2C Interface. The Chip Can Control up to Twelve Indiction, As well as a simulated thirteenth electrop. The mpr121 Also Features Eight Led Driving Pins. WHEN the PINS AreNot configured as electrodes, they may be used to drive leds.

There a four jumpers on the bottom of the building, all of white are set (closed) by default. An address jumper ties the adds to group, Meaning the default i2c ss of the chip will be 0x5a. If you need to change theAddress of the Chip (by shorting add to a different Pin), Make Sure You Open The Jumper FIRST. Jumpers Also Connect SDA, SCL and the Interrupt Pin to 10K PULL-UP s. If you don "t rebine the public-up resistorsYou can open the jumpers by cutting the trace connecting them.

There is no regulation on the board, so the voltage support should be between 2.5 and 3.6VDC. Ch Means, Unless You Modify the Board, you can "t operate the mpr121 inLow-SUPPLY VOLTAGE MODE (1.71-2.75VDC).

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