3dp fc660 v3 OLED hand wired mechanical keyboard

Now with bongo cat
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updated November 1, 2023

Description

PDF

This is a hand wired keyboard. Please be familiar with the process of hand wiring before undertaking this project. Inspiration for this project comes from this hero.

Features

  • 5° typing angle
  • Low profile front height
  • Supported layouts:
    • Split backspace
    • ISO enter
    • Split left shift
    • Split right shift
    • Stepped caps lock
    • JIS bottom row
    • If I haven't included your preferred combination, please feel free to edit the source file and share
  • Vial compatible
  • Bongo cat

Parts

Aside from the printed pieces and tools, you will also need:

QTYPartComment
1ATmega32U4 MCUe.g. Arduino Pro Micro or Teensy 2.0.
14M3 threaded insert (5 mm OD, 3 mm length) 
14M3 bolt (8-10 mm length) 
10.91 inch OLED module 128×32 
≈66MX keyswitchExact number depends on layout.
≈66Diodee.g. 1N4148.
2-6Plate mount stabilisersExact number depends on layout.
≈3Cable ties (3 mm width)For securing the MCU to the case.
 WireSolid wire recommended over stranded.

 

Wiring guide

Do not wire the rows all the way across. The Arduino Pro Micro only has 20 pins therefore we must use a 10×8 matrix (10 rows, 8 cols) with the last two pins running the OLED display. See diagram below for wiring. The row and col are labled on the top left legend.

MatrixPinMCUPinMatrix
Row 9D3
RAW 
Row 8D2GND 
 GNDRST 
OLED GNDGNDVCCOLED VCC
OLED SDAD1F4Col 0
OLED SCKD0F5Col 1
Row 7D4F6Col 2
Row 6C6F7Col 3
Row 5D7B1Col 4
Row 4E6B3Col 5
Row 3B4B2Col 6
Row 2B5B6Col 7
Row 1B0D5Row 0

 

Firmware

Default firmware with Vial support is included in the ‘Other files’ section. Flashing is easy with QMK Toolbox.

Source code:

Cardboard design

See my faux cardboard version of this keyboard.

Tags



Model origin

The author remixed this model.

Differences of the remix compared to the original

Now with OLED display!

License