Programmable keyboard controller.
Project based on V-USB library, firmware precompiled for atmega8a with 12MHz quartz.
v1.x - controller supports up to 13 (17) keys with 4 layouts, stored in EEMEM (you can switch between layouts by installing jumper link on board).
Software part (charset changer) comes in 2 variants.
First one is standalone package with jre included and doesn't require any third-party apps, so no there's need to install app, just unpack and launch.
Second package contains only app itself and you must have jre 1.8 installed.
PCB and schematic projects made in DipTrace software.
Main project is Atmel Studio 7.
When flashing avr make sure you using right fuses (there 2 xml files included, one for use with bootloader and another without).
Bootloader made by obdev (https://www.obdev.at/products/vusb/bootloadhid.html) and just configured for my project, to activate bootloader set up jumper in appropriate position.
| J2 | J2 | J2 | J2 | J2 |
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| lay1 | lay2 | lay3 | lay4 | boot |
- code nice button debounce
- make v2.x board, that supply only 12 keys but includes programmable led lights on buttons.
GNU GPL V3 (see LICENSE)