A basic plant monitoring project to help my daughter understand how Arduino, Prometheus, and Grafana work. This project monitors the soil moisture of your plant and sends the sensor values to Prometheus, which is then visualized to a Grafana dashboard.

This project follows the steps listed in IoT with Arduino and Grafana.

1. The soil moisture sensor has two metal parts (like two little forks).
2. When the soil is wet, water helps electricity flow easily between them and when the soil is dry, electricity can’t flow well.
3. The soil moisture sensor tells the development board how much water is in the soil.
4. Arduino reads the sensor values and gives you a number:
5. When it's a big number, the soil is dry (needs water 🌵)
6. When it's a small number, the soil is wet (good for plants! 🌱)

1. The sensor values from Arduino are sent and stored to Prometheus.
2. The values are visualized to Grafana, making them easy to understand (and it looks nicer!)
3. When the soil is dry, an alert will be sent via email or Telegram to let us know when the plant needs watering.

• Soil moisture sensor
• ESP32 Development board
• Wiring cables
• USB-C cable
• Prometheus (We used the Prometheus instance that comes with the Grafana Cloud account)
• Grafana account

• IoT with Arduino and Grafana
• Easy DIY IoT Projects with Grafana
• Avocado monitoring with Arduino and Grafana