But because our prototype PCB for the board game module is single-sided, we're having to solder little wires from the "under" side of the board to the "top" to solder our tiny little SMT LEDs to. In short, we're making through-hole style LEDs from some 1206-sized SMT versions
This allows us to mount each LED in the tiny space alongside each of the (5mm high) pushbuttons. Regular LEDs - even the small 3mm versions - are far too tall and we didn't fancy trying mounting the LEDs on their side to get them to fit, so the obvious answer was to make some ultra-low profile through-hole LEDs.
The final board, soldered up and ready for testing:
In the final (production) version, we're going to make the PCB double-sided and put SMT pads on the top surface alongside the pushbuttons. This should not only make assembly easier, but much quicker in the long run!