Good old nRF24L01+ wireless modules are inexpensive and effective. Well, they are as long as they work correctly, anyway. The devices themselves are mature and well-understood, but that doesn’t mean ...
[Howard Matthews] mills his own PCBs, and man, does he hate drilling through-holes. Manually changing the bits between engraving and drilling after isolation routing? What is this? The stone age?
Arduino enthusiasts that would like to keep their projects a little tidier and remove the tangle of wires sometimes associated with connecting different peripherals together. May be interested in the ...