this post was submitted on 17 Nov 2023
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Ferrit core as 555 trigger? (lemmy.one)
submitted 10 months ago by prenatal_confusion@lemmy.one to c/askelectronics@discuss.tchncs.de
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To all the electronic nerds out there: I am trying to trigger a 555 timer by movement in a random direction that also occurs randomly and any change in position should trigger the 555. AFAIK tilt switches are not useable here. Does this idea make sense?

Ferrite core In orange, spool in blue.

Would there be a voltage generated by movement if the core is suspended by some kind of spring or rubber band?

The idea being to play a sound from a df mini player by pulling a pin high for 3 seconds.

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[โ€“] cmnybo@discuss.tchncs.de 7 points 10 months ago (1 children)

No, moving a ferrite core through a coil won't generate a voltage. You would need to move a magnet to generate a voltage.

Look for a vibration switch like one of these. If you want more control, you could use an accelerometer and a microcontroller to trigger it from a specific amount of movement.