Anet A8 AM8 Servo HK 15148B Micro Switch Z Probe

microswitch pretty accurate and stable
HK 15148B is metal gear and digital servo prevent for jittering

using that for z probe almost 6 months without changing my Z offset, very beautiful

provide
f3d arm servo
example marlin config

this design using this carriage https://www.thingiverse.com/thing:2207765