The Arduino Mega 2560 R3 is positioned on a suspended platform, with the anodes controlled on the Digital Pins as opposed to the cathodes on remapped AnalogInputs.
It lets you use not just one or three Arduino boards but seven — Micro, Pro Mini 3.3V, Pro Mini 5V, Leonardo, Uno R3, Nano R3 ...
The heavy lifting is handled by an Arduino Mega 2560, which hooks up to what remains ... for about 25.000 EUR he took a Arduino Mega2560 R3, which he doesn’t really like, but Arduinos are ...