Small Black T-Bar Hall Effect Fader - 5V

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You might recognize this interesting new component from behind-the-scenes studio clips of audio recording equipment or even music videos. A fader is a control device for fading or changing the sound volume, light intensity, or simply the gain on an audio or video signal.

Here is a small, black handheld-size DIY version for your next audio or music (maybe even with a NeoTrellis?) project. Connect the red wire to 5V, black wire to ground, and the yellow wire to your input to get a smooth-to-operate control with a pro quality feel. This isn't a potentiometer, instead, it uses a hall effect sensor: this means no scratchy, jumpy or worn-out knobs after years of use.


  • Single axis
  • Hall effect sensor
  • Operating angle: 76 degrees (+/- 38 degrees)
  • Input: 5VDC
  • Output: 0.5V / 0.3-4.7V / 0.5-4.5V
  • Waterproof rating: IP54
  • Wire length: ~30cm
  • Diagram

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