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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/
653910b64b
Looks a bit less old-fashioned that way. |
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avrdude | ||
bbl | ||
cam | ||
ext | ||
ioscript | ||
libubb | ||
lpc111x-isp | ||
nxuart | ||
swuart-chat | ||
ubb | ||
ubb-jtag | ||
ubb-patgen | ||
ubb-usb | ||
ubb-vga | ||
ubbctl | ||
bbl.brd | ||
bbl.cmp | ||
bbl.pro | ||
bbl.sch | ||
BOOKSHELF | ||
Makefile | ||
README |
Ben Blinkenlights ================= This is an umbrella project for various items related to using the 8:10 card slot of the Ben Nanonote. The "flagship" sub-project is no longer the top-level LED board but the Universal Breakout Board, in ubb/ . The original blinkenlights, a board with a line of LEDs cam/ Outline of the board; obsolete ext/ UBB variant with ground between signals; obsolete ioscript/ GPIO test pattern generator; experimental libubb/ Helper functions for accessing UBB lpc111x-isp/ In-system programmer for NXP LPC111x MCUs nxuart/ Card with ATmega48 in UART configuration; incomplete swuart-chat/ Software-implemented UART (on UBB) ubb-jtag/ JTAG via UBB (example for Milkymist One) ubb-usb/ Design for hypothetical UBB-based USB host ubb-vga/ VGA output using UBB and minimal circuitry ubbctl/ Set and query UBB signals from the command line ubb/ The Universal Breakout Board (UBB) 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.