Validated against a Hero 3 Silver:
- fetchStatus() now GETs the status endpoint /camera/se (was /bacpac/SH?p=%01,
which *started recording* every poll), at the correct host 10.5.5.9.
- Read the response from the stream, not getString(): the blob is binary and
starts with 0x00, which truncated the Arduino String to empty.
- Offsets: recording = byte 29 (confirmed by not-recording vs recording diff),
battery_raw = byte 19 (drains with charge; calibrate on the hub),
video_remaining = bytes 25-26 (provisional).
- Default config set to this camera (goprosilver-1 / 10.5.5.9); per-camera
values can still be overridden at runtime via set_config.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Complete rewrite of firmware into two dedicated boards per camera node:
ESP8266 (Camera Bridge):
- Connects ONLY to GoPro AP — polls status, sends over UART
- Zero network switching, zero MQTT
- HTTP GET /bacpac/SH for status, start/stop
- JSON-per-line UART protocol to ESP32
ESP32 (MQTT Bridge):
- Connects ONLY to travel router — MQTT to Pi hub
- Reads status from ESP8266 over UART2 (RX16/TX17)
- Auto-registration, heartbeat, command forwarding
- Zero camera communication
UART Protocol: JSON-per-line at 115200 8N1
ESP8266→ESP32: status/ack/pong/error
ESP32→ESP8266: cmd (start_recording/stop_recording/ping)
Hardware updates:
- BOM now includes both boards (~4/node)
- 3D case has stacked dual-board compartment
- UART wire channel between board recesses
- Shared 3.3V power rail for both boards
Joshua King
Hermes