Wow, very cool design with the multiple cam profiles driving it all.  And thanks for posting that CAD video, helped me understand how the guts of this work.

Hi Rob,

Thank you very much, I'm glad you enjoyed it!

And you're welcome!

Greg

Hi kmatch98,

Thank you so very much for your kind words, I truly appreciate it!

Regarding the design of this seven segment display, the cam diameter is 82.2mm which is determined by the slot width and slot deflection.  As I mentioned in the description, the slides need to travel between 0 and 3.5mm in order to obtain a 0 to 90 degree rotation of the segments, thus the slots in the cam a designed to generate this motion.  The slide cam pin diameter is 3mm and the cam slot is 3.4mm.  The "A" segment slot is the smallest diameter.

I hope this helps and thanks again!

Greg

Awesome work!  One challenge to smooth operation is the pressure angle of the cams. Can you comment on what are the limiting factors for the cam design? Maybe overall size of the cam, cam pin width?  Also how do you deal with the tolerances of opening and closing to ensure it opens enough and closes enough. I saw one Comment asking about bistable operation. Do you use any bistable design techniques?  There is a lot that it takes to get a design like this working, thanks for any insights you can provide into the design issues!