The Nextion MEGA IO project – Part 1
As announced in my last Sunday's blog post, we'll start from this week with the Nextion MEGA IO project which will allow us from a simple Nextion HMI without onboard GPIO, to write all the 12 PWM pins, to read and write all the 32 digital IO pins, and to read all the 16 analog pins of an Arduino Mega! Later, we will even add the option to control the full IO not only of one single MEGA, but several of these. We will also get a downsized version for the Arduino Uno. With the knowledge and tools given successively in this blog post series, you should become a master when it comes to using any MCU for connecting various sensors, LEDs, motors, fans, pumps, relays, or whatever you might imagine!