18 lines
788 B
Markdown
18 lines
788 B
Markdown
# Techkeys SixKeyBoard
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[Get one here!](http://techkeys.us/collections/accessories/products/sixkeyboard)
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The schematic is like this:
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```
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switches leds
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,--+--+--. ,--+--+--.
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|C7|B7|B5| |C6|B6|B4|
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+--+--+--+ +--+--+--+
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|D6|D1|D4| |D5|D2|D3|
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`--+--+--' `--+--+--'
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```
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The LED on the bottom is `C4`. All 7 of the leds are turned on when the keyboard boots-up in the `sixkeyboard.c` file - backlight_enable is not required. The MCU is an Atmega16u2, so the flash memory is limited to 0x3000 bytes - the current setup uses just about all of that! I'm sure things can be opitimised a bit.
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There is a jumper on the bottom of the board (next to the USB port) that serves as a reset button - I drilled a hole in my case to allow for quick access via a screwdriver/metal object. |