Clacky VIK module, uses either a VIK connector, or split out GND/5V/GPIO pads. Requires a push pull solenoid purchased separately, tested with the Uxcell 4.5v push-pull solenoid, but should work with any sub-5v push pull solenoid. Design files: https://github.com/Aleblazer/VIK-Solenoid/tree/ExtraSmallVIK