Michael Lynch decided he wanted a house plant. Being a software engineer, however, and not a gardener, gave him a distinct problem: when should the plant be watered? How much moisture is too much? So, he collaborated with Jeet Shetty on an automatic plant watering system called GreenPiThumb.
He used Python on the back-end for managing soil moisture and temperature sensors and for turning the water pump on and off, as can be seen below.
It took over a year to complete, despite the two developers wanting it to be a few weeks’ worth, and they encountered many challenges along the way. The two also captured the growth of the plant using a Pi camera and generated a time-lapse: