Hello all,
Just finished beta version 1 of a General Purpose In/Out daughterboard for the Microtouch, and thought that people might want to see it. I decided to utilize the MicroSD card slot to run SPI data to a second atmel processor (an Attiny2313), and handle the in/out there. Current demo is a Microtouch Application with 6 buttons that turn on and off LEDs. Pretty basic, but a start, and I will post all the code/schematics under some creative commons license soon, to make it OSHW-compliant. Video and more description here: http://hjohnson.posterous.com
Constructive criticism is welcomed, thanks!
MicroGPIO: A GPIO Expander for Microtouch
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_bill
- Posts: 88154
- Joined: Sat Feb 07, 2009 10:11 am
-
- Posts: 12151
- Joined: Thu Apr 06, 2006 4:21 pm
Re: MicroGPIO: A GPIO Expander for Microtouch
awesome! x2
-
- Posts: 78
- Joined: Sun Dec 20, 2009 9:17 pm
Re: MicroGPIO: A GPIO Expander for Microtouch
Thank you to both! I'm going to keep developing it, adding the other pins and other commands (maybe UART capability as well). If it comes out that Rossum has been developing a new version with those capabilities, though... well to be honest I'll be happy. I'm sure that as the original designer he has a far cleaner way of making it than I.
-
- Posts: 1645
- Joined: Sat Nov 10, 2007 12:59 am
Re: MicroGPIO: A GPIO Expander for Microtouch
cool. i was thinking of doing this myself or, (more likely), just using a sparkfun sd sniffer. what's a good thickness for the pcb material to fit the sd socket?
-
- Posts: 78
- Joined: Sun Dec 20, 2009 9:17 pm
Re: MicroGPIO: A GPIO Expander for Microtouch
I'm actually currently using a microSD sniffer, but the one annoying thing is that it is big enough it covers the mini USB port, hence my board design that keeps it all off to the side. According to Sparkfun's board files, anything <.75mm thick works.
Please be positive and constructive with your questions and comments.