How many times you have you accidentally left your home lights turned on? Solve this problem quick with an automatic light sensor system that can shut off (and turn on) depending on the amount of light in an environment.
This guide details how to make a temperature control with Ubidots and a simple NodeMCU to send email or SMS alerts when your “variable” (in this case, the temperature) gets too hot, too cold, or reaches a certain design rule.
If you could make your very own digital, Internet-connected piano, what would you play? In this post we will teach you how to make program a buzzer using a NodeMCU and Ubidots.