Turntable with Gears

prusaprinters

<p>Turntable with fun gears around the outside.</p><figure class="media"><oembed url="https://youtu.be/NKdJG_AYg5g"></oembed></figure><p>This is quite a complicated one to build as it requires lots of extra parts:</p><ul><li>N20 geared motor with high gear ratio. I used a 6V, 1000:1 ratio motor. About 20-30 rpm. Avaliable from Pololu or cheap on ebay or various Asian online stores</li><li>A small battery 3.7V lipo recommended - I used a 45 x 25 x 10mm 700mAh one.</li><li>Solder, wires and Soldering iron</li><li>Prototyping board and tiny switch soldered and trimmed to fit</li><li>Optional battery charger, there's space for a TP4056 USB Lipo charger with protection circuit. I got these off ebay.</li><li>10x M3x10mm socket head screws for each of the outer gears</li><li>1x M3x 16mm socket head screw for a central screw</li><li>Some Small M2 screws for mounting circuit boards and attaching the motor gear. Or use some glue.</li></ul><p>See images for assembly. The M3 screws self-tap into the plastic, and dont tighten any too much to leave the gears spinning.</p><p>Note: I didn't want the switch sticking out on top or bottom surfaces, so it's only accessible by using a screwdriver or finger tip through the hexagonal holes in the inner ring. This is slightly difficult when it's spinning!</p><p>Printed gears in nice copper colour.</p><p>No supports needed in any parts.</p>