So I have got several of those electromagnetic 7-segment displays [1]. These things are basically 7 electromagnets attached to 7 segments, and when you pulse the electromagnets one way, the segments retract, while reversing the polarity of the pulse pops the segment back out.

The problem now is how to drive it. The maker (AlfaZeta) does seem to have a driver board, but they do not sell them individually anymore. My idea is to drive the displays with a whole bunch of H-bridges, but this is extremely painful to lay out on a PCB and even more painful to debug. Any better ideas?


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