BDN9 Rev. 1 - 3x3 9-key Macropad - Rotary Encoder Support
$12.99A tribute to one of the greatest players ever, the BDN9 is a fun little 3x3 macropad that lets you try out a couple of rotary encoders as well. What can you do with rotary encoders? That's for you to figure out! Use it as up/down, page up/down, volume control, or whatever, get creative. Go win a Super Bowl with it or something.
Also, this build doesn't require any diodes, simplifying the build.
New with Rev. 1.3:
- Addition of 3rd encoder option on top row!
- New kit option!: Pre-Soldered PCB - Resistors, transistor, RGB LEDs, and reset switch already soldered on
- You still need to solder on in-switch LEDs, switches, and Pro Micro-compatible controller
Features:
- 3x3 grid of keys
- Ability to use rotary encoders in the upper row of the board
- In-switch LED support
- Breakout pins for adding RGB strips or use the RGB LED footprints on the PCB with loose RGB LEDs
Base Kit Includes:
- 1 PCB
- 1 Switch plate
- 1 Bottom plate
- 8 6mm M2 screws and 4 12mm M2 standoffs
- 1 Reset switch
- 10 470Ω resistors
- MOSFET for LED support
Other parts needed:
- MX-compatible, Alps, or Choc switches
- Keycaps
- 1 Pro Micro, Elite-C, or Proton C
- LEDs (Optional)
- Rotary Encoders (EC11 or EC12) and Knobs
- EC11 is preferred
- Middle layer (Optional)
- RGB LEDs (Optional) - Loose, Strip
Build Log: Build guide for BDN9
Case Files: GitHub - BDN9 Case
Default Keymapping:
The default keymapping that the board is pre-programmed with can be found here: Default Keymaps







