[Gta04-owner] [ANN] GTA04 Keyboard prototype

Dr. H. Nikolaus Schaller hns at goldelico.com
Mon May 14 11:11:16 CEST 2012

Am 14.05.2012 um 11:01 schrieb Christoph Mair:

> On Mon, May 14, 2012 at 10:55 AM, Denis Shulyaka <shulyaka at gmail.com> wrote:
>> MPR121 uses I2C 3.3v interface which I guess we've got.
> This chip can also operate from 1.8V which is what we have on the
> GTA04 (and the I2C bus also uses these levels)
> Christoph

Christoph didn't mention that there is already a driver for the MPR121


and hardware for experimentation was available through the Freerunner Navigation


Unfortunately it is no longer in production now (lack of demand).

If someone wants to develop such a touch keyboard, we
can help to get it produced and distributed for the masses.


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