Magnetic Pendulum

The single electromagnetic coil in this circuit serves a dual purpose. It's used as a timing sensor and to repeal the magnet keeping the pendulum swinging. The circuit runs on 2AA batteries for up to 3 months. Today the pendulum is stilling running. I take orders if your interested in having me make a Pendulum for you. I charge $500 plus shipping.

The pendulum arm swings on a single skateboard bearing. It's runs completely quiet, and never requires any maintenance or adjustments.

Category:

Science & Technology

Tags:

• Magnetic
• Pendulum

[xlizzzie]

Wow, this is fantastic. What is the circuit board that you used?

[metracommm]

@xlizzzie It's just a cheap circuit board with lots of usable traces. You can get these at most electronics stores.

[xlizzzie]

@metracommm Is something like the RadioShack "Multipurpose PC Board with 417 Holes" okay for this?

I would REALLY like to try making this, it is awesome! But sadly, I'm not too familiar with electronics so I do not know what materials are appropriate or not..! Thank you for responding.

[metracommm]

@xlizzzie You need a circuit board with holes and traces on it. Just solder the components to the traces you need.

[ZPDM123]

flipped from when the pendulum passed over in the other direction? Is it possible to set it up backwards where the pendulum passes over and ends up being attracted by the electromagnet? I'm going to have to try and build this! Thanks.

[metracommm]

@ZPDM123

Yes It is possible. I'm not sure why you would want to do this? It would stop the pendulum from swinging, defeating it's main purpose.

[samuryon]

I was wondering if you happen to know anything about the equation of motion for this system? If so, anyway you could share it?

[yptrio1]

pl. send me the circuit i want to make one

[theuspatriot3000]

Attach a magnetic rod to the right side of the pendulum arm and position it to enter another coil on the right side. The tiny bit of current generated could in theory be fed back to rechargeable batteries powering the pendulum thereby keeping it swinging much longer by trickle charging them.

[Slovenija12345]

can i get the schematic???? need it soon

[axlepen]

Awesome project! any chance you can share your schematic? i want to build one for my old grandfather clock, the pendulum wont keep swinging. thanks in advance!

[xlizzzie]

Hello,

I have yet again another question for you that may be stupid. Do you recommend building the coil first or the circuit? Also, how approximately how much magnetic wire is needed for the coil?

I have started to try and copy this but it's difficult to start..! Many thanks