Putting it all together

Once you have adjusted the thresholds, insert the soil sensor next to your potted plant and power up your Pico. You should have something that looks like this:

Figure 4.15 – Fun with gardening

You can also monitor your published data on ThingSpeak, as illustrated in the following screenshot:

Figure 4.16 – Soil sensor data

ThingSpeak is an analytics platform that lets you aggregate data from your sensors. You can expand this project by creating a dashboard for all the sensors in your garden and remotely control valves from your dashboard. Platforms such as ThingSpeak enable scaling from one sensor to an array of sensors and actuators.