![]() I decided to try the following combinations: ![]() ![]() To start with, I am using Carl's flexible actuator as a reference which is a 2 layer PCB with 35 turns on each layer. The plan is to design a test PCB with a few variations of coils. So in this Instructable, I will try to make a few variations of the coils and then test them to see which one works the best. This means that I could make the display smaller and less power-hungry. Do check out his work! Anyways, it got me thinking if I could use the same PCB coils to push/pull the segments. He has made some awesome projects using it. It is basically an electromagnet on a flexible PCB. But then I came across Carl’s FlexAR project. Thanks to them, each digit draws about 9A! That’s a lot! Although providing that much current was not a problem but I knew it can be a lot better. The only thing that stopped me from doing it were the power-hungry electromagnets. Originally I had planned to make at least 3 or 4 such digits to display some kind of useful information on it. The project was so well-received, it even got published in Hackspace Magazine! I received so many comments and suggestions that I had to make an improved version of it. A few weeks back I had made a Mechanical 7 Segment Display that uses electromagnets to push the segments.
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