A potentiometer on its PCB for your Plunger.
To use a real ball launcher on your Pincab, you need a potentiometer.
Here is the POTAR which is none other than a Linear slide potentiometer 10KΩ 100mm Mono BOURNS soldered on a PCB.
The POTAR has a plug to connect it properly to your KL SHIELD or your KL25Z.
I added at the end of the PCB a small socket to wire a possible button to simulate the LAUNCH BALL button on certain tables, and this very cleanly.
use 5mm max screw, if they are longer they can damage your KL25 !
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