9-bit capacitive touchpad MPR121-OKY3424 – OKYSTAR

OKY3424

9-bit capacitive touchpad MPR121

Product Description

100% Brand New & High Quality

The module uses MPR121 touch control chip, the chip can have up to 12 touch points, which can also be one of the eight touch points set to LED driver, the chip uses 1.71 V to 3.6 V power supply, 16ms sampling period only 29uA current, when the external trigger input, the chip to interrupt the way and I2C to notify the external device, the use of very wide, can be used as computer peripherals, MP3 players, remote control, lighting control and mobile phone

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Product Details

Product Description

Description:

Turns the MPR121 Touchpad into a phone keypad. Pressing a pad will

print a 0-9, * or #.

Hardware: 3.3V Arduino Pro Mini

SDA -> A4

SCL -> A5

IRQ -> D2

I2C code from an ATmega328 library to get this working.

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