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.
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!
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
@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.
My comment was a two-parter with the first part lost. Was guessing that the current to the electromagnet must switch with each pass as the LED goes off for each pendulum pass and the pendulum is alternately going in opposite directions. As for the rest, just looking for ways I might screw this up when I start trying to build one tomorrow.
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.
This is quite interesting. It is especially cool that the coil serves as the sensor to time the push for the pendulum, very elegant. I don't have an electronics background so pardon my basic questions. I am guessing the North South poles of the magnet are oriented perpendicular to the direction of the swinging pendulum? I also see that the led blinks with every passage of the magnet. So when the pendulum is moving in the opposite direction the current flowing to the electromagnet is flipped
@amdnra - The dimensions of the base and arm are not critical. Keep in mind the longer the arm the slower the pendulum will swing. The weight of the arm is also a factor. You will get more travel with a lighter arm. A loose rolling skateboard bearing is also a plus. The arm on my model is 8 inches long.
@pheebzerk - No. It wasn't designed to produce current. I built it to be a very reliable and efficient pendulum. It has been running non stop since 2007. I change the battery every 3 months. My cat likes to play with it.
I was wondering if you happen to know anything about the equation of motion for this system? If so, anyway you could share it?
samuryon 2 months ago
pl. send me the circuit i want to make one
yptrio1 3 months ago
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.
theuspatriot3000 3 months ago
can i get the schematic???? need it soon
Slovenija12345 4 months ago
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!
axlepen 6 months ago
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
xlizzzie 9 months ago
Wow, this is fantastic. What is the circuit board that you used?
xlizzzie 9 months ago
@xlizzzie It's just a cheap circuit board with lots of usable traces. You can get these at most electronics stores.
metracommm 9 months ago
@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.
xlizzzie 9 months ago
@xlizzzie You need a circuit board with holes and traces on it. Just solder the components to the traces you need.
metracommm 9 months ago
Sorry I get it now, the N-S poles are facing vertically on the magnet, took me a while.
ZPDM123 11 months ago
My comment was a two-parter with the first part lost. Was guessing that the current to the electromagnet must switch with each pass as the LED goes off for each pendulum pass and the pendulum is alternately going in opposite directions. As for the rest, just looking for ways I might screw this up when I start trying to build one tomorrow.
ZPDM123 11 months ago
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.
ZPDM123 11 months ago
@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.
metracommm 11 months ago
This is quite interesting. It is especially cool that the coil serves as the sensor to time the push for the pendulum, very elegant. I don't have an electronics background so pardon my basic questions. I am guessing the North South poles of the magnet are oriented perpendicular to the direction of the swinging pendulum? I also see that the led blinks with every passage of the magnet. So when the pendulum is moving in the opposite direction the current flowing to the electromagnet is flipped
ZPDM123 11 months ago
@amdnra - The dimensions of the base and arm are not critical. Keep in mind the longer the arm the slower the pendulum will swing. The weight of the arm is also a factor. You will get more travel with a lighter arm. A loose rolling skateboard bearing is also a plus. The arm on my model is 8 inches long.
metracommm 1 year ago
@pheebzerk - A loose running skateboard bearing and a little help from gravity.
metracommm 1 year ago
@pheebzerk - No. It wasn't designed to produce current. I built it to be a very reliable and efficient pendulum. It has been running non stop since 2007. I change the battery every 3 months. My cat likes to play with it.
metracommm 1 year ago
What transistors did you use in the circuit board?
TPS
TPSproductionz 1 year ago
WOuld you provide this as a kit or as a list of parts (specs) and connection drawings?
Thanks in advance.
enriquelaya 2 years ago
The polarity connections of the coil don't matter.
metracommm 2 years ago
Yes the LED polarity is correct.
metracommm 2 years ago
That seems to work just like a bedini pulse motor...
BasementBen 3 years ago
Clever =) cheers
Jack91Punk 3 years ago
Im try'ing to build something similar, what's that small circuit board in the corner of the base?
Jack91Punk 3 years ago