37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
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KMAC Happy keyboard firmware
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======================
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The KMAC Happy is a HHKB layout 60% keyboard. It is programmed with the 'KMAC KEY MAP' original.
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## Hardware
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Columns 7-14 and rows 0-4 are wired directly to the ATmega32U4, and columns 0-7 are wired to the [74HC237D demultiplexer](https://www.mouser.de/datasheet/2/916/74HC237-1319445.pdf). Capslock is on E2 and also triggers a reset if held when plugging the cable in.
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There is only one individually controllable led, which is the Capslock key.
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The ATmega32U4 runs on an external crystal on 8mhz, so you'll have to change the bitclock on the ISP programmer if you're unable to read or write the chip.
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## How to build
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```
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make kmac_happy:default
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or
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make kmac_happy:vial
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```
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## How to flash
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Hold the capslock key while plugging in the USB and flash the .hex file using QMK Toolbox or Atmel FLIP.
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## **IMPORTANT**
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The backlight feature does not work in current version, I still does not figure out a way to add backlight function without breaking the firmware size limitation.
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May be fixed in future release.
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```bash
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* The firmware is too large! 29052/28672 (380 bytes over)
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```
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## Thanks
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Thanks to Evy Dekkers for his great contribution, which makes the porting much easily.
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