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Hardware

Target

HiveTech currently targets a generic esp32dev board definition with a single BME280 environmental sensor.

Current firmware assumptions from the code:

  • board: ESP32 dev board ([env:esp32dev] in platformio.ini)
  • primary sensor: BME280 via I2C
  • I2C address: 0x77
  • sleep cycle: TIME_TO_SLEEP = 60 seconds
  • deep sleep wake source: timer wakeup

The code calls Wire.begin() without explicit pins, so the active SDA/SCL mapping depends on the actual ESP32 board defaults or local hardware wiring.

Pin Map

  • GPIO25: redLEDpin
  • GPIO4: greenLEDpin
  • GPIO15: ONE_WIRE_BUS
  • GPIO5: SD_CS

Not every declared pin is currently exercised in the active telemetry flow. Treat this list as the current code-level hardware contract, not as proof that every peripheral is physically assembled on the node.

Notes

  • The firmware currently uses only BME280 telemetry in the active publish path.
  • OTA is enabled, so the deployed node must stay reachable on the local network during maintenance.
  • Before adding more hive-specific sensors, document their wiring and topic outputs here first.