BDN9 Rev. 1 - 3x3 9-key Macropad - Rotary Encoder Support

A 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