From the MAKE Flickr photo pool
Flickr member Pocket-sized breadboarded a solar/magnetic pendulum as seen in the BEAM book – JunkBots, Bugbots, and Bots on Wheels
The self-sufficiency of solar power can really up the fun-factor in these builds – Magnetic Pendulum on Flickr
This site explains the project a bit more, and highlighting it’s strengths:
- Back EMF powers the led
- slight vibrations allow the system to self start
- solar powered means years of joy with no support needed (this is my favorite part of beam art – it’s allows there for you)
- self timing
- the magnet induces a slight current into the coil
- this extra current coupled with the energy stored in the capacitors trips the power dump
- the power dumped into the coil causes the magnet and coil to be attracted to each other
- there is only 1 degree of freedom in the system so it starts to swing predictably
- the orientation of the magnetic field pulls the pendulum towards dead center on the way in
- this same field pushes the pendulum away from the coil once it passes dead center
From the pages of MAKE:
MAKE:06 p.54 – A Beginner’s guide to BEAM – Subscribers, read this article now in the digital edition.
2 thoughts on “Solar pendulum”
Great picture… but “This site explains the project a bit more, and highlighting it’s strengths” – takes you to a forbidden site. no info on how you built it or if it even works.
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