> Oh -- and for the keyboard -- look into the work done with custom keyboards > and a microcontroller called the "Teensy" -- the code should be compatible > with an Arduino Micro -- of which cheap clones can be had on eBay. To be > clear, you want the Arduino MICRO with the ATMEGA32U4 in it, and > specifically NOT the similar Arduino NANO with the ATMEGA328 in it. The > '32U4 part has on-chip USB so you can do USB-HID stuff with it.
A Teensy could work, indeed. The issue is - the keyboard needs 24 (16+8) pins. Now that I think of it, we can use 32U4, it has 8 PCINT pins (that we can use for 8 rows) and there are 18 GPIOs remaining - enough to implement I2C (without the INT pin, though) or PS/2 - or, indeed, use USB. > I will warn > you that the cheap Arduino clone boards tend to use a particularly touchy > voltage regulator -- I've fried one of those boards that way, it's not > hard... Does the regulator come into play if we feed the ATMega32U4 from either 5V or 3.3V directly into VCC? I guess it doesn't. _______________________________________________ arm-netbook mailing list arm-netbook@lists.phcomp.co.uk http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk
