MakerFarm Prusa i3 Servo Z Endstop

by CapnBry, published

MakerFarm Prusa i3 Servo Z Endstop by CapnBry Oct 20, 2013
0 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

4993Views 1398Downloads Found in 3D Printer Accessories


This is a replacement part for the MakerFarm Prusa i3 X carriage that adds the ability to mount a servo and microswitch to be used as the Z endstop. With this new "Z probe" the bed can be probed and autoleveled using the G29 function in Marlin.

The servo mount accepts an SG90 or MG90S 9g microservo. Insert the servo through the hole, add the printed arm (with the inset facing away from the servo), and insert the servo arm into the inset. Secure with the servo's screws and you're ready to go.

Designed to be printed with 2x 0.66mm walls, tested with 0.30mm layer height.

More from 3D Printer Accessories

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

Thanks for this one, Bryan!!

Does this design hit the wood on the left side of the x axis? I am currently using one that holds the servo horizontally and I lose about 12mm of print surface in the x direction.

No it does not hit the X end on the Z tower. It is designed so that the server slips in front of that piece with a decent amount of clearance to give you 100% of the X axis travel.

How do you wire up the servo to Ramps and does the firmware activate the servo?

There is a row of 3 pin connections on the RAMPS 1.4 labeled "servos". They need their own 5V power source applied at the 5V pin on the other side of the reset button. This is because even a small servo can pull an amp of power which the regulator on the Mega would not be able to supply (and it is not even connected because of this).

In Marlin you need to enable SERVO_ENDSTOP for your Z axis, as well as adjust any setting in the autolevel section of the config. My autolevel offsets are X=20, Y=0, Z=-3.90