Imported from GitHub: turtureanu/termite-keyboard · commit 60594ac · license GPL-3.0

Description

A simple 34-key ortholinear dual OLED low profile mechanical keyboard.

README

Termite

[!IMPORTANT] July 26th was the date I submitted this keyboard for review, today on October 6th I noticed that I forgot to add the firmware (which would have been caught by a reviewer).

[!IMPORTANT] Made for Hackboard, which requires having made a macropad as part of Hackpad V2.
Here is my Hackpad V2 macropad: Wirepad

This is a 34-key ortholinear split keyboard with built-in wrist supports, one 0.91" OLED display on each half, and low-profile mechanical Cherry-MX type switches (Gateron). I use a TRRS cable to connect the two halves. The case is 3D printed and uses 5 M2 screws (four M2x12, one M2x4).

For the firmware I'm using KMK.

I created this keyboard as a replacement for my laptop's keyboard, which might fail soon. I wanted an ortholinear split keyboard with fewer keys that would fit the Engram keyboard layout. In the past I designed a similar keyboard with an 0.42" OLED display under each key (inspired by PolyKybd Split 72), but I lost that design due to an accidental mass file deletion that BTRFS couldn't recover.

Schematics

Main Schematic

Left LEDs	Right LEDs

Left Switches	Right Switches

PCB

The gerber files can be found in pcb/gerber

BOM

Name	Sourcing	Category	Amount	Price (total including shipping)
Orpheus Pico	Hack Club	MCU	2	$0
Gateron Low Profile Switch 2.0 Red	AliExpress	switches	35 (set)	$15.85
Transparent Keycaps with Black Bed	AliExpress	keycaps	40 (4x 10 pcs set)	$17.55
SK6812 MINI-E LED	AliExpress	misc	100 (set)	$5.13
0.91" White OLED Display	AliExpress	misc	2	$3.61
1N4148 THT Diode	AliExpress	misc	100 (set)	$1.98
PJ-320A 3.5mm Female Jack Connector	AliExpress	misc	20 (set)	$2.13
M2x4 Hexagon Countersunk Head Screw with Nut	AliExpress	fasteners	50 (set)	$1.75
M2x12 Hexagon Countersunk Head Screw with Nut	AliExpress	fasteners	50 (set)	$2.46

Switches & keycaps:

• switches: $0.452 per switch
• keycaps: $0.438 per keycap

Fasteners: $4.21 total

Misc:

• LEDs: $0.0513 per LED
• OLED displays: $1.805 per OLED display
• 1N4148 Diodes: 0.0198 per diode
• Jack connector: $0.1065 per jack connector

Misc total: $12.85

JLCPCB cost, if I were to order it myself: $30.04 total (for the entire keyboard, i.e. both halves)

Credits

• Raspberry Pi Pico model (RPi_Pico_SMD_TH.kicad_mod): https://github.com/ncarandini/KiCad-RP-Pico/
• SK6812-MINI-E (modified): https://github.com/keebio/Keebio-Parts.pretty
• Gateron Switch (SW_Gateron_LowProfile_THT.kicad_mod / modified): https://github.com/siderakb/key-switches.pretty.git
• 0.91 OLED display: https://github.com/gorbachev/KiCad-SSD1306-0.91-OLED-4pin-128x32.pretty/blob/master/SSD1306-0.91-OLED-4pin-128x32.kicad_mod
• Diode (D_DO-35_SOD27_P7.62mm_Horizontal.kicad_mod / modified): https://gitlab.com/kicad/libraries/kicad-footprints/
• PJ-320A 3.5mm 4-pin Jack Connector: https://github.com/nathanhborger/PJ-320A_KiCad_Library
• TRRS-PJ-320A footprint: https://gitlab.com/kicad/libraries/kicad-footprints/