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Blinkenlights, Demonstrate the use of the uSD slot for DIY hardware http://projects.qi-hardware.com/index.php/p/ben-blinkenlights/
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Makefile 7.3%
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Werner Almesberger 87f1ae7744 Get stdpass from kicad-libs. Added bbl.cmp to make pcbnew happy. 
- bbl.pro: use stdpass in kicad-libs, not the copy in ben-wpan (the latter
  project will use kicad-libs too)
- bbl.cmp: added to stop pcbnew from complaining each time we read the
  netlist
2010-09-01 19:06:01 -03:00
bbl Describe origin and purpose. 2010-09-01 04:26:31 -03:00
cam Initial commit. 2010-09-01 04:02:24 -03:00
bbl.brd Initial commit. 2010-09-01 04:02:24 -03:00
bbl.cmp Get stdpass from kicad-libs. Added bbl.cmp to make pcbnew happy. 2010-09-01 19:06:01 -03:00
bbl.pro Get stdpass from kicad-libs. Added bbl.cmp to make pcbnew happy. 2010-09-01 19:06:01 -03:00
bbl.sch Initial commit. 2010-09-01 04:02:24 -03:00
Makefile Initial commit. 2010-09-01 04:02:24 -03:00
README Describe origin and purpose. 2010-09-01 04:26:31 -03:00

README 

Ben Blinkenlights
=================

This project is a proof of concept implementation of Rikard Lindstrom's
idea of using the Ben's uSD slot as a general extension interface also
for devices that don't speak MMC or SD/SDIO. The application is a simple
LED circuit, as suggested by David Samblas.

The uSD slot gives access to six GPIOs, a 3.3 V supply that can be
switched on and off by software, and ground. We use a simple form of
multiplexing to drive ten LEDs with this interface.

Note that one should only light one LED at a time. If multiple LEDs are
lit, they will share the current though the common resistor, and will
thus be less bright than a single LED.