DEVLOG #28

I prepared and locally verified an ESP-IDF replacement candidate for TX1. The firmware builds successfully, and the host-side checks for packet handling, scheduling, boot/OTA variants, and negative compile guards pass. This is still a software-only result. Nothing has been flashed, and TX1 has not been validated on hardware. Before replacing the existing TX1, the old TX1/RX4 baseline and network pre-check must still be completed.

I also tightened the RX data path. Incoming frames are now checked for valid input and correct TX binding before passing through one jitter-tolerant 20 ms admission gate. Invalid or foreign frames no longer consume the timing budget. Callback, queue, UDP, and server-side counters are tracked separately, making it possible to see where loss or delay occurs. The deterministic fixtures and local ESP32-S3 build pass, but no live RX measurement has yet shown an actual reduction in frame loss or data age.

The new 3D print exposed a mechanical error: it is approximately 1 mm too small and does not fit. It needs to be adjusted and printed again.

Next: complete the read-only TX1/RX4 baseline, adjust and reprint the part, then continue with RX3 calibration and validation of both mmWave sensor paths.