We build a Wi-Fi plant-watering robot with soil moisture sensor!

Components used:

Particle Photon Internet Button - http://amzn.to/2zKtKfe
(or) Particle Photon - http://amzn.to/2zvOi6T
IOT Relay - http://amzn.to/2iWoU43
4-way Aquarium Valve - http://amzn.to/2iYqAK8
Loctite Silicone Sealant - http://amzn.to/2AagFdX
DFRobot Soil Moisture Sensor - http://amzn.to/2BuVd1t
Aquarium air pump - http://amzn.to/2ztgqrd

(I've been told some of these components were selected by http://www.pleasetakecareofmyplant.co... - check them out!)

Example Arduino/Particle code: https://gist.github.com/anonymous/460...