High quality button boards for Evolv DNA boards.
We didn't skimp on quality with these boards: gold plated solder pads/holes, black solder mask, machine assembled components for precision and reliability, and high end antistatic packaging.
You can use the up/down board with other boards, like Dicodes or others, but you have to make sure the up/down on the main board have the ground in common.
The fire board can be used with any board which allows to solder external fire button.
You can also use two fire button for the up/down.