Arduino Code using:
- WEMOS D1 mini board using WiFi
- BME280 Temperature, Humidity and Pressure sensor
- pushing metrics to Prometheus Pushgateway
Prometheus Pushgateway (in my case two of them running on a Raspberry Pi 3 and a Raspberry Pi Zero W) are the target for Arduino to avoid running a web server on the Arduino and it is really a caching layer for metrics and later on scraped by Prometheus (alternative can be MQTT)