Using an Arduino to monitor the temperature and relative humidity in a room, and pushing that data to a Prometheus Pushgateway.
- Arduino Nano 33 IoT
- Adafruit HTU21D-F Temperature & Humidity Sensor
| Device | Price | Usage |
|---|---|---|
| Arduino Nano 33 IoT | 20 € | Collecting the data and sending it to server |
| Adafruit HTU21D-F Temperature & Humidity Sensor | 10 € | getting measurements |
| Raspberry Pi 3 Model B | 45 € | Server fr Prometheus, Pushgateway and Grafana |
| Library | Version | Usage |
|---|---|---|
| Adafruit_HTU21DF_Library | 1.1.0 | Getting data from sensor |
| ArduinoHttpClient | 0.4.0 | Client for making push requests |
| WiFiNINA | 1.8.13 | Connecting to WiFi |
| And all requirements of the libraries above |
This requires a config.h containing the secret values for your WiFi and Pushgateway server info.
// define wifi SSID and password to connect
#define WIFI_SSID "<SSID>"
#define WIFI_PASSWORD "<WPA2>"
// make sure to reserve a static ip address for your Pushgateway
#define PUSHGATEWAYIP "<PUSHGATEWAY IP>" // ip of the server running the Pushgateway
#define PORT 9091 // standard port of Prometheus PushgatewayReplace <> with the corresponding data and remove the <>.
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