Build a Coffee Level Indicator to Understand IoT
In this blog, we are going to see how to build a real-time coffee level indicator using an ultrasonic sensor and NodeMCU.
Reading this, a common reaction may be, “What did I just read!? What do you mean NodeMCU?”
Don’t worry! Let’s try to understand what exactly is this about. Ever heard of IoT? Short for ‘Internet of Things? Let’s throw some light on…