As a part of my cockpit, that is still not the ‘stick-shakers’.

A stick shaker is a mechanical device that is attached to the back of the yokekolom, or a tube, and that the pilot is warned of an impending ‘stall’. To start to rattle, and the yoke, and to let it vibrate.

The "stick shakers" that I have purchased replicas, and out of the LEOING737.COM.

They are both controlled by a Phidget Relay Card-0/0/4, and is configured by using the ProSim737.

A detailed explanation and pictures can be found on the following link:
https://www.flightdeck737.be/hardware/yoke/stick-shakers/