3D Printed Bracket to Mount SG90 Servo Under a Turnout...
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Published on 4th Jul 2020 09:03 AM
I plan on throwing all the turnouts on the layout that are within easy reach with my 'Hidden Switcher' ( HERE ). For the others I'll use servos and control them inexpensively with the controller ( HERE ). I wanted a bracket to mount the servos that I could 3D print with my Ender 3 Pro so designed the bracket on this page with Fusion 360. It was a pretty simple design and at this point using it on a test rig I'm really happy with it. You can find the files on my thingiverse account at the link at the bottom of this post under my name.
I'll let the pictures do the talking and you can find a lot more along with a parts list on my site ( http://1fatgmc.com/RailRoad/3D-Printer-2/page-24.html )
https://1fatgmc.com/RailRoad/3D-Prin...0Bracket-4.jpg
https://1fatgmc.com/RailRoad/3D-Prin...0Bracket-7.jpg
https://1fatgmc.com/RailRoad/3D-Prin...0Bracket-8.jpg
https://1fatgmc.com/RailRoad/3D-Prin...0Bracket-9.jpg
https://1fatgmc.com/RailRoad/3D-Prin...Bracket-10.jpg
https://1fatgmc.com/RailRoad/3D-Prin...Bracket-11.jpg
https://1fatgmc.com/RailRoad/3D-Prin...Bracket-12.jpg
https://1fatgmc.com/RailRoad/3D-Prin...Bracket-13.jpg
https://1fatgmc.com/RailRoad/3D-Prin...Bracket-36.jpg
Parts for the Servo Bracket:
1--Servo Bracket – My thingiverse account ( HERE )
1-- SG90 Servo – Ebay or other sources
1-- Micro Limit Switch – See picture for dimensions. (Google 'micro switch kw11-3z' or 'MXRS SPDT 1NO 1NC Hinge Lever Momentary') You can find a couple links to possible sources for the limit switch on my site.
2-- #4 X 3/8” Pan Head Phillips screws (to mount servo to the bracket)
1-- #4 X 1/2” Pan Head Phillips screw (to mount limit switch to pad under it)
1-- #4 X 5/8” Pan Head Phillips screw (to secure the limit switch from turning – you might try without this if you can tighten the other one enough.
I also made a couple tools that help to quickly locate and mount the bracket on the underside of the layout and will put them in the next post,
Sumner
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