RC Skid loader (1:10 scale) 3d model
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RC Skid loader (1:10 scale)

RC Skid loader (1:10 scale)

by Thingiverse
Last crawled date: 4 years, 3 months ago
This 1:10 scale RC skid loader is actually much more than a toy. It will serve as a test bed for automation control software in the company that I work for. I have done the 3D design, the electronics and software for the drive controller and all the printing as part of a "slacktime" project, to give all of us in our department something really cool to program on. That is why the model is big enough to hold a RaspberryPi Zero, which is the actual hardware platform that we will be testing our software on (and the 2800mAh 12V battery will give us enough battery capacity for hours of operation).
With 42 single plastic pieces (32 different pieces, some of them needed multiple times), and over 88 hours of total print time for all parts, I had to do almost all of the work in my spare time at home. I have put a lot of love into the details, that is why all four axis are guided by two ball bearings each, just like the axis for the arm.
Since this kind of skid loader (which tries to be as close as possible in all dimensions to a Caterpillar 226B3) has four wheels rather than tracks, I have used GT2 belts internally to give it all-wheel driving capabilities with only two motors. For driving I use 100rpm 12V DC motors, the arm and the shovel are controlled by RC servos. My homemade drive control software allows for very smooth acceleration from the DC motors, to give it a distinct scale look-and-feel.
Current status is that the model is driving well under it's own power and the arm and the shovel are controlled nicely by the RC servos. The RaspberryPi software is not done yet, so I have to control it with a wire-bound remote control for now. A first driving video is available on YouTube: https://youtu.be/5sA_RCIF0G4
As said, the operation of the arm and the shovel is now working, there is just no video yet of that.
All needed .stl files are uploaded now. I am still working on a photo documentation of the assembly process to make it a bit easier for all of you that want to rebuild this model.
Of course I will disclose also the electronics description (with respective firmware).
By the way, if you like the little street cone in the photo, feel free to print some for yourself: https://www.thingiverse.com/thing:4074005
Hope you will like it and I would be thrilled to see lots of makes here!

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