Flipdot / Flip-disc PoC

thingiverse

This is a fully operational proof of concept for a flipdot, an electro-mechanical pixel that can be used to create large displays. Here's a simple demo: https://youtu.be/fEpsv2Hcpz4 This project offers valuable insight into how electromagnets work and uses basic components that are easy to craft. It functions on a simple 5V / 300mA power supply, which is only needed when changing the color of the pixel. The device remains idle and does not consume power during this time. To create this flipdot, you will need: - To print all parts (and two caps), which can be achieved with a layer thickness of 0.2mm and 20% infill. - Two M3x20mm screws - Two meters of 0.1mm enameled copper wire (larger wires should also work) - A small magnet measuring 5x1mm Place the magnet inside the disc, assemble the parts according to the images, and ensure the screws are installed straight to avoid blocking the disc. Place the caps on the screws. Wind the wire around each screw as shown in the image, leaving a small amount of wire exposed for connection. You can now connect each electromagnet to switches connected to the power supply. Be sure to connect them correctly to achieve the desired flip direction. Important: Electromagnets heat up when powered and should not be left on for extended periods, especially with higher current supplies. Important: Do not directly connect electromagnets to an Arduino or Raspberry Pi as it can damage your device. A coil has a "current return" that can harm sensitive equipment. Research how to wire an electromagnet or relay correctly and apply the same method to each electromagnet. Note: With 3m of wire, you need at least 5V / 300mA current to flip the disc. You can reduce the required current by adjusting the number of wire turns. Using 6m of wire on each electromagnet can divide the required current by two.