T&L Publications

Would like to build one of these, but don't know where to start designing the circuitry as described in this video:

https://www.youtube.com/watch?v=PWg6TG2bkFU

The circuit fires a coil depending on the presence of a Neo magnet in one of the sticks. Hall effect sensor, I presume. But, not every time. Only when the stick is slowing down.

Any ideas on where to begin this design?


John

Found this on Instructables: https://www.instructables.com/id/Iron-M ... -Pendulum/


Signed: Janitor Tzap

Thanks! Good info there, but nothing about the electronics.

If you scroll down the page to the Discussion area.
A person posted a circuit that he used.


Signed: Janitor Tzap

Oops! Missed that! That 3 volt circuit looks like a starting point. Thanks!