Baliem-keyberon

A hand wired hhkb layout keyboard. it uses keyberon for its firmware.

2nd layer

Material

• a STM32F103C8T6 aka blue pill
• Acrylic Sandwich case you can find it at dxf folder
• 60 Cherry MX compatible keyboard switch
• 10 M3 screw
• 60 1N4148 diodes
• Soldering kit

KLE json

this is the raw data for keyboard layout.

["esc","!\n1","@\n2","#\n3","$\n4","%\n5","^\n6","&\n7","*\n8","(\n9",")\n0","_\n-","+\n=","|\n\\","~\n`"],
[{w:1.5},"Tab","Q","W","E","R","T","Y","U","I","O","P","{\n[","}\n]",{w:1.5},"Delete"],
[{w:1.75},"Ctrl","A","S","D","F","G","H","J","K","L",":\n;","\"\n'",{w:2.25},"Return"],
[{w:2.25},"Shift","Z","X","C","V","B","N","M","<\n,",">\n.","?\n/",{w:1.75},"Shift","Fn"],
[{x:1.25,w:1.25},"Option",{w:1.25},"⌘",{a:7,w:6.25},"",{a:4,w:1.25},"⌘",{w:1.25},"Option"]

Wiring

Current wiring based on layout in layout.rs

PIN OUT

Compiling

Install the rust toolchain, currently keyberon run on rust 1.47.0 issue

curl https://sh.rustup.rs -sSf | sh
rustup toolchain install 1.47.0
rustup target add thumbv7m-none-eabi --toolchain 1.47.0
rustup component add llvm-tools-preview --toolchain 1.47.0
rustup run 1.47.0 cargo install cargo-binutils

Compile the firmware

rustup run 1.47.0 cargo objcopy --bin baliem --release -- -O binary baliem60.bin

Flashing using DFU

Put the keyboard into flashing mode. (hit the reset button on the blue pill). Then flash it:

sudo dfu-util -d 1eaf:0003 -a 2 -D baliem60.bin

Push reset and the keyboard was ready to go.

Notes

reflash bootloader:

openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c "init; reset halt; stm32f1x mass_erase 0; program generic_boot20_pc13.bin exit 0x08000000"