Keeb left

A minimal ergo keyboard

Low profile, split, ortholinear, 34-key layout staggered to my natural finger rest positions. Designed for Gateron KS-33 Red swiches and DSA keycaps. See write-up here.

Features

• N-key rollover
• Efficient matrixless polling
• Lightweight and portable
• Serial communication between splits
• USB-C host connection

Hardware Build Instructions

• Order and assemble PCB's
  • Reflow recommended for all surface mount components except SPI headers, TRRS jack, and crystal oscillator.
  • On hardware version 1.1, there are duplicate C2 and C3 traces. Only solder one C2 and one C3.
• Configure programming setup using In-system programmer (ensure shared ground)
• Power on PCB through USB-C connector
  
  Note: only one PCB can be flashed at a time

Software Build and Flash Instructions (Linux)

# Install dependencies
sudo apt install gcc-avr avr-libc avrdude make

# Clone this repo
git clone https://github.com/IanFeldman/keeb.git
cd keeb

# Compile left or right half
make [left] [right]

# Update makefile targets 'fuses' and 'flash' as needed for your ISP device
# Set fuses with ISP (first time only)
make fuses

# Flash keyboard with ISP
make flash