| Ref | Requirement | Priority | Status |
|---|---|---|---|
| tbd | Satisfy Prototype requirements. | Must Have | To-do |
| tbd | Have same form and fit as existing unit. This means mount using existing screw holes and supports (e.g. needs same dimensions and cut-holes | Must Have | To-do |
| tbd | Use existing power-in | Must Have | To-do |
| tbd | Support field replacement or servicing | Should Have | To-do |
- Single "design" - full custom PCB with ESP32 embedded (complex layout)
- Semi-Modular design - partial custom PCB with DIP sockets for ESP32 and motor controller (modular layout), likely surface-mounted LEDs and traces for the buttons