Tact switch z probe servo arm
thingiverse
Tact switches get the job done when probing for a Z axis. Swap out that micro switch with a 2-pin tact switch and some wires. Don't forget to glue those two halves together. This little swap requires a bit of fiddling, but it's worth it - this setup is as slim as possible. Specifically designed for use in the corona DS929HV servo, which features 20 splines, you can watch me do the install at https://youtu.be/k0LWsGR6-ic
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