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Finn Christiansen e080622b95 ✨ Less code due to use of mp_helpers package and InfluxDB support		2026-05-31 13:31:04 +02:00
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README.md	✨ Less code due to use of mp_helpers package and InfluxDB support	2026-05-31 13:31:04 +02:00

README.md

ESP32 + BME280 sensor

Written in MicroPython. Reads temperature, humidity and barometric pressure. Sends it to a MQTT broker. InfluxDB will be added soon.

Installation

Download MicroPython here
Then flash it to your microcontroller, ESP32 for example:

esptool.py -p /dev/ttyACM0 erase_flash
esptool.py -p /dev/ttyACM0 --baud 460800 write_flash 0 ESP32_GENERIC_C3-20250911-v1.26.1.bin

Get the dependencies:

BME280 driver: https://github.com/targetblank/micropython_ahtx0
My helper functions (InfluxDB, MQTT) for MicroPython: https://code.f2n.me/finn/MicroPythonHelpers

mpremote mip install "github:robert-hh/BME280/bme280_float.py"
mpremote mip install "https://code.f2n.me/finn/MicroPythonHelpers/raw/branch/main/package.json"

Use Thonny (graphical IDE) or ampy (CLI) to flash the files to the microcontroller.

Example with ampy:

ampy --port /dev/ttyACM0 put config.py
ampy --port /dev/ttyACM0 put main.py

Wiring

3V3, GND, SDA, SCL