With all the hands-free dispenser designs cropping up out there, the maker world could potentially be headed for an Arduino shortage. We say that in jest, but it’s far too easy to use an Ardu… ...

Another Arduino board was used for the receiver. It was linked to a custom-made PCB board on which three alcohol sensors with different sensitivities, power and operation circuit diagrams were ...

There's a commercial electrical sprayer (DuroBlast) that transmits the signal, and on the other side of the room there three alcohol sensors (MQ303, MQ-3, MR513) attached to an Arduino ...

The arLCD is a smart 3.5" color touchscreen LCD Arduino combo board that brings easy-to-program, smartphone-like user interfaces to the Maker Community.