Reviving T9 with a Handwired Mechanical Keyboard

Many of us are probably old enough to remember T9 but for those that don't, it's a way to type with just a number pad. Today we're going to take a look not only at how I handwired this QMK macropad but how I use it to put a modern twist on the classic T9 layout. The board is direct wired without any diodes and powered by a single RP2040 Pro Micro running QMK firmware. https://scottokeebs.com/scottot9 ~ Links ~ Website: https://scottokeebs.com Support me: https://ko-fi.com/joe_scotto ~ Handwiring Tools ~ TS100 Soldering Iron: https://amzn.to/3LCsrkb D24 Chisel Tip: https://amzn.to/3VFxiES 63/37 Solder: https://amzn.to/3uBlMPu Wire Strippers: https://amzn.to/3LZez4F Electric Screwdriver: https://amzn.to/45Jxg3v ~ Handwiring Parts ~ 1N4148 Diodes: https://amzn.to/3Ccljbb 16g Copper Wire: https://amzn.to/3xLDVvJ Raspberry Pi Pico: https://amzn.to/3HglCVb Arduino Pro Micro: https://amzn.to/3HkR9Fn Ethernet Cable: https://amzn.to/3uyaOKr M2x6mm Screws: https://amzn.to/3UI1bDH M2x8mm Spacer: https://amzn.to/3Y4KzJ3 M2 Heat Set Insert: https://amzn.to/3WjklB9 Durock Stabilizers: https://amzn.to/3FgcLQR ~ 3D Printing ~ Ender-3 Pro: https://amzn.to/3VIWryL Ender-3 Max: https://amzn.to/3PQOHsP PEI Magnetic Bed: https://amzn.to/3Hi7URx Dual Z Upgrade: https://amzn.to/3h7DTJy BLTouch Auto-Leveling: https://amzn.to/3UGEBv8 Sonic Pad: https://amzn.to/3ZQa7ea Deburring Tool: https://amzn.to/48MjXlB Elegoo Filament: https://amzn.to/3rG3T4f ~ Favorite Cheap Switches ~ Gateron Milky Yellow: https://amzn.to/3Bk0Cci Akko Lavender Purple: https://amzn.to/3VJy440 ~ Social ~   / joe_scotto     / joe_scotto     / joe_scotto   ~ Community ~ ScottoKeebs Discord:   / discord   Handwired Keyboards Reddit:   / handwiredkeyboards   ~ Timestamps ~ 0:00 - Intro 0:15 - Case 1:08 - Switches 1:51 - GND Wiring 4:39 - GPIO Wiring 5:51 - Assembly and Keycaps 6:43 - Keymap Explanation 7:51 - Keymap Walkthrough 13:24 - Outro ~ Disclaimer ~ Some links may be affiliate links where I will make a small commission. #mechanicalkeyboard #raspberrypi #3dprinting