This tiny and simple module will help you when you don't have enough analog pins on your microcontroller. Let's suppose you are using a NodeMCU-12 for instance. You have only one ADC pin. What if you have a lot of analog sensors? Just use this module, adjust the offset and done! You will have a digital sign if sensor has a value over the set point you adjusted. Simple like that. It is also an excellent module to use analog sensors with Raspberry Pi GPIO pins.
