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PlayStation controller: a trigger that pushes back

By @elvar_official, part of Visual Learning. A small motor, a worm gear and gears that push against your finger.

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A PlayStation controller on its charging stand, drawn in isometric.Open on its site
Screenshot of PlayStation controller: a trigger that pushes back on its original site, taken on October 25, 2026. The lab belongs to its author; we only link to it.

The question it answers

How can a trigger push your finger back?

The steps

  1. 1Turn it on
  2. 2The buttons
  3. 3The trigger
  4. 4The vibration
  5. 5Take it apart

The big idea: Behind each DualSense trigger, a small motor turns a worm gear and some gears that push a lever against your finger (Sony calls them adaptive triggers). And the vibration is no longer a spinning weight: it is 2 voice coils, small speakers you feel instead of hear.

The question, steps and idea are translated from the original site.

What it is

An actuator hidden in something you use every day: the controller’s trigger resists because a motor pushes it back. You open it step by step and see the motor, the gears and the coils that vibrate.

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  • Step-by-step and Auto mode

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