7 Segment Mechanical Counter, Version 3.0, Ratchet, Forward & Reverse

v3.0 - Digital mechanical 7 segment sequential counter See description/pics for rubber band alternative to coil springs
4,976
13 k
142
92 k
updated August 18, 2024

Comments

Do you have a suggestion as to where to find the 4mmx50mm compression springs in the US? I've looked so many places, and either I can't find the correct size or the prices are absolutely ridiculous for what is nothing more than heat-treated metal wire. I want to print 2 double-digit counters, which means I'll need 8 springs, and I'd rather not pay $30 plus shipping for it.

@Will_69426 AliExpress. I got 10 for $0.97 including shipping. Just have to wait 2 weeks for delivery and use a rubber band in the mean time.

Show all comments