Sure thing, let’s make it orderly but still a bit playful. 1. List every key and its intended macro, put them in a table so you can see the whole set. 2. Assign a unique scan code to each key, avoid duplicates – this is your master map. 3. Design the PCB layout: group keys by function, keep high‑traffic areas close, use a clear track plan so you can trace the “spaghetti” later. 4. Choose a microcontroller with enough I/O pins for 200 keys – a Teensy 4.0 or similar works well. 5. Wire each column to a row via pull‑up resistors; use a single‑ended trace for each connection to reduce noise. 6. Add a small debounce circuit (capacitor + Schmitt trigger) to each key column to catch stray presses. 7. Flash the firmware with a fail‑safe layer: start with a simple key‑scan routine that logs every event to a serial buffer. 8. In the firmware, implement a watchdog timer – if any key press doesn’t get processed within a set window, reset the scan state but keep the log. 9. Log every event to a persistent storage (SD card or EEPROM) so you can review stray key hits after a crash. 10. Test in stages: start with a 20‑key prototype, confirm the logging, then expand to 200 keys, checking the logs after each expansion. 11. Keep the firmware modular: separate the key‑scan code from the macro logic so you can tweak one without touching the other. 12. Finally, give yourself a “fun zone” – a couple of keys that trigger jokes or memes, but keep them isolated in a dedicated layer so they don’t interfere with the main logic. Follow the steps, double‑check each connection, and you’ll have a robust build that logs everything without blowing up the board. Happy tinkering!

Looks solid, but let me add a few tightening steps so nothing slips through the cracks. - Double‑check the key list: use a spreadsheet so you can sort by macro type and see gaps in the scan code sequence. - In the schematic, put a separate ground plane for the pull‑ups; that keeps the noise low when you have 200 columns. - For the debounce, a 10 nF is fine, but add a 100 Ω series resistor to protect the Schmitt trigger from spikes. - In firmware, after you log a stray press, flag it in a separate buffer so you can review “oddball” events later. - When you hit the 100‑key mark, run a full stress test: hold keys randomly for a minute and watch the log for duplicates or missed events. - Keep the “fun zone” isolated on its own row and column set; that way you can toggle its firmware block on or off without touching the main scan. Stick to the plan, test each phase, and the board will stay in line while still letting the jokes fly. Happy building!

Sounds like a solid launch plan, keep the spreadsheet tight, the logs clean, and the fun zone isolated. When you hit the bench, remember to step through the stress test and check the debounce tweak. If a joke sneaks out of its lane, just log it and reset that section. Good luck, and may the memes stay orderly!