vfdboard/README.MD

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# USB VFD
A USB enabled vacuum fluorencent display.
## Hardware
The board is based around the Samsung HCS-12SS59T which can be ordered at Pollin (at the time of writing this): https://www.pollin.de/p/vakuum-fluoreszenzdisplay-samsung-hcs-12ss59t-12x1-121466
![Schematic](hardware/schematic.png)
## Bootloader
A USBASP based bootloader for the board. To enter it, push the button during powerup.
## Firmware
An AVR-CDC based firmware providing a serial terminal (```/dev/ttyACMx```) with the following commands:
* Set text: t<12b ASCII>
* Set raw: T<12b RAW>
* Set brightness: b<0\15> / B<RAW>
* Shift text: s<ASCII>...
* Set character RAM: C<0-15><2b character>
* Reset LCD: r
* Reset board: R
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Each command needs to be followed by a carriage return and / or a newline.
## License
All code is released under the GNU GPL Version 2. See LICENSE.TXT for more info.