3D printed mini linear actuator

We hope to make a mini linear actuator that is easy to print and use in robotics DIY projects

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The linear actuator is a subproduct of a previous project and we tought it would be useful to other makers. So, the idea is to make something like those Firgelli micro actuators but yourself and with the added bonus that you can integrate the inclosure of the actuator to the body of your robot or project. 

This is the video of the actuator being assembled.

we hope to improve it and keep it to the bones so other can implement it, sugest improvements and make something useful together.

ino - 1.27 kB - 05/16/2018 at 19:38


Standard Tesselated Geometry - 275.67 kB - 05/16/2018 at 19:37


Standard Tesselated Geometry - 172.05 kB - 05/16/2018 at 19:37


Standard Tesselated Geometry - 143.93 kB - 05/16/2018 at 19:37


Standard Tesselated Geometry - 127.23 kB - 05/16/2018 at 19:37


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  • 1 × Tower Pro MG90S Metalic Micro Servo Dimension: 22.8×12.2×28.5mm, Stall torque: 1.8kg/cm (4.8V); 2.2kg/cm (6.6V), Operating voltage: 4.8V~ 6.6V
  • 1 × Arduino Uno R3 Microcontroller: ATmega328P, Operating Voltage: 5V, Input Voltage (recommended): 7-12V.
  • 1 × Polulu 100:1 Micro Metal Gearmotor

  • It's alive!

    Giovanni Leal05/16/2018 at 16:32 0 comments

    Hi, we finally printed out and made it work as you can see on the next video.

    The build instructions are pretty self explanatory, however in the video we skip the servo dismouting part and glueing the gear to the potenciometer, let us know if you need a video of that also.

    About the humidity, this was the solution:

    A big box with lots of silica in it.

  • Project progress

    Giovanni Leal05/08/2018 at 20:41 0 comments

    First of all, thanks to everybody that has shown interest for the project. We encorage you to make those comments and suggestions public to create a discussion over the page.

    So, the popular question, where is the phisical actuator?

    We have been trying to print the project for a week now and it has been imposible. We are amazed because normally we print 7 hours parts like its not a big deal. So where is the problem?

    Humidity, it has taken us a long time to figure it out. But its definitely the humidity on the fillament that we are using. 

    We recommend watching this video while we figure it out.

    Again, hope to ear from you trough this channel.

  • CADS

    Giovanni Leal04/30/2018 at 20:26 0 comments

    Rigth now we made CADS and it should work. It would be like this (in the color of the cheapest fillament we got lying around) :

    The measurements are 70mm X 30 mm give or take on the widest part. One of the most important detail to keep in mind if you want to integrate this part to your project is the assembly, we recomend to print the cylinder housing in one piece to prevent unwanted wiggling. 

    Jonathan made an animation of it working and it looks just great:

    So we will print this out and tell you about it. But please let us now what to take into consideration for the project, beacuase the goal is that you use it and make a really cool robot with it. 

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