Project: Iot Farming Device

In the fall of 2020, I created a small IoT farming device that simply measures soil moisture levels using a sensor, and pumps water into the soil when needed.

The device would be planted in the soil, with a sensor that measures soil moisture levels that protrudes out of the bottom face of the sensor. The sensor readings would be taken, and an average value would be calculated based on the readings. If the readings were low enough (i.e soil was sufficiently dry), the arduino would send a signal to the electrical relay, that would power a 9V water pump.

The control interface was completely over HTTP, and the device would run a simple web server that could be accessed by the user.

It showed the current soil moisture level. It could also manually activate the pump for a set interval, through actions by the user.

A platform called IFTTT was used to send notifications, if desired, to the user’s mobile phone, notifying them whenever the plants were watered.