“What is APEX?
APEX is a smart (not to mention cute) plant monitoring device. Just plug it into any plant and it will display the “happiness” level of the plant! This is a great reminder to water your plants if you have a bad habit of forgetting to water them.
How does it work?
Magic. Just kidding! APEX uses an Arduino attached to a moisture sensor, which is inserted into the soil of the plant. This sensor will read the moisture content of the soil, and then the Arduino calculates what face to display.