Ferraganchos & Pinchos

Or how to rip all this stuff out of my head…

Archive for the month “December, 2011”

MPR121 capacitive keyboard with Arduino Mega

UPDATE (October, 1st 2012)!!! We’ve moved to www.openpipe.cc.

I’ve got some MPR121 breakout boards from SparkFun in order to test latency and play a bit with this IC.

The setup is quite simple: eight drawing pins on a breadboard connected to the MPR121 breakout.

Then connect power and I2C signals to Arduino Mega. Be sure power is 3.3V because MPR121 is not a 5V IC.

I’ve attached a 16 Ohm speaker to PWM output (PIN 9 lower, PIN10 higher).

And here is the result.

And here is the code: http://dl.dropbox.com/u/196184/mpr121.zip. Use at your own risk 😉

Code is based on:

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