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mirror of git://projects.qi-hardware.com/ben-blinkenlights.git synced 2025-02-04 19:31:07 +02:00
Werner Almesberger 6558f56de6 ubb-vga2: replaced threshold-based color mapping with color cube model
- ubb-vga.h (ccube_init, ccube_map), ccube.c: color mapper based on
  proximity in color cube
- grabfb.c (pattern, grabfb), ppmimg.c (pattern, convert): use the color
  cube mapper instead of inferios threshold-based mapping
- ubb-vga2.c (session): initialize the color cube
- ubb-vga.h (thres), grabfb.c (thres), ubb-vga2.c (usage, main): removed
  the threshold along with the option (-l) to set it
- Makefile (OBJS): added ccube.o
2011-04-28 01:18:03 -03:00
2010-09-01 04:02:24 -03:00
2011-01-31 19:02:50 -03:00
2011-01-31 19:02:50 -03:00
2011-01-17 12:45:42 -03:00

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

This project is a proof of concept implementation of Rikard Lindstrom's
idea of using the Ben's 8:10 card 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 8:10 card 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.
Description
Blinkenlights, Demonstrate the use of the uSD slot for DIY hardware
http://projects.qi-hardware.com/index.php/p/ben-blinkenlights/
Readme 402 KiB
Languages
C 84.9%
Makefile 7.3%
Perl 3.2%
Shell 2.2%
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