Yet another electro-mechanical lamp/light project. A vortex lamp for your desktop, living room or as a night light.
Similar to how a magnetic stirrer works, a motor will spin a permanent magnet creating a spinning magnetic field. Placing a ferromagnetic metal within that field will cause it to spin as well. The metal spins without making any physical contact with the magnet or motor. The spinning motion of the metal stirs the water in the glass, creating a twister/vortex effect.
The stirrer used is a paperclip, coated with epoxy (to prevent rusting)
Parts are pretty basic. The (somewhat) difficult thing is sourcing for the Neodymium magnet . Any kind of magnet won’t do, especially those ferrite fridge magnets. It has be a neodymium magnet for it to work. Or at least the old school samarium cobalt magnet (if you can find one). I got mine from a dead hard drive. Other source of these magnets would be those magnet therapy bracelets (though the price is an utter rip-off). If not, you’re going to have to shop online as neodymium can’t really be purchased off the shelf (at least in this part of the world).
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Finally got the chance to complete the so called solar charging lamp.
This is a basic solar lamp that consists of nine monocrystalline solar/PV cells connected in series forming a 2.5watt panel (5V 500mA). The panel is used to Trickle Charge a Selaed Lead-Acid battery housed inside the casing.
I remade the panel and it’s now slightly bigger than the earlier one (in sweemeng’s video) and gives out more juice.
The light uses a basic phototransistor circuit for switching. The circuit charges the battery in day-time and turn on the LED lamp at night. The knob in front of the lamp is for tuning the lamp’s sensitivity.