So today I received a few flip dot modules.

These are 28 dots by 7 from Hanover (UK). The connector is quite unusual but the signals are easy to drive, the row and column drivers are integrated. They are described in some pages such as :

https://damow.net/fun-with-flip-dot-displays/

https://mcuoneclipse.com/2021/06/01/flip-dot-clock-using-used-bus-parts/

The shipping has damaged some dots but they are not hard to fix (actually, they are now all fixed). I have some projects for these modules but I'm not the only one to use them :-)

The connector is quite unusual but can still be found : https://uk.farnell.com/lumberg/mica14/socket-free-idt-14way/dp/808842

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Dedication : Thanks to Denis, Stéphane, Andrew and Sam !

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Update : Sam got a few modules as well :

It's a good start ;-)