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3D Printed Servo Bracket for Turnout Control ---
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You
can find all the files to 3D print my servo brackets and other items
on my thingiverse.com account ( HERE
).
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 above.
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Pros:
1--No
assembly.
2--Small Footprint.
3--Cheap.
4--Place to mount
limit switch that changes the polarity of the frog when
thrown.
Cons:
1--Need a 3D printer or access to one.
-----------------------------------------------------------------------------
I'd
like to hear for anyone who decides to try the bracket (contact20
(at) 1fatgmc (dot) com). Let me know if the bracket worked for you
and/or if you can see the need for any changes.
I'll
pretty much let the following pictures tell more about the bracket.
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For
a very inexpensive controller for the servo click ( HERE
).
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')
A
couple links to possible sources for the limit switch:
https://www.ebay.com/itm/10PCS-Limit-Switch-3-Pin-N-O-N-C-5A-250V-AC-11-3Z-Micro-Switch-US-STOCK-/132982902026?nma=true&si=U5DuZnreedOiPhMbVBbDzUGmDnc%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
( my source )
https://www.amazon.com/MXRS-Hinge-Momentary-Button-Switch/dp/B07MW2RPJY/ref=pd_sbs_328_1/136-5383031-0422533?_encoding=UTF8&pd_rd_i=B07MW2RPJY&pd_rd_r=96806b4c-8dab-478d-8df5-32a7d03864b9&pd_rd_w=d0xpS&pd_rd_wg=zJdoM&pf_rd_p=d28ef93e-22cf-4527-b60a-90c984b5663d&pf_rd_r=7YD0P10EK834N6QAHG3W&psc=1&refRID=7YD0P10EK834N6QAHG3W
https://www.amazon.com/10PCS-Switch-KW11-3Z-Microswitch-Buckle/dp/B01HA88S58
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.
(NOTE:
In the pictures you will see different screws being used on the test
rig. I ordered the Phillips pan head since Phillips are so much
easier to screw in vs. the straight slot screws you see in some of
the pictures. I had those so used them for the test.)
=========================================
..............................---
Update: 11-11-2020 ---
I
had a friend that had to locate two electrical switches on the post
on the servo bracket and the post started to separate from the rest
of the bracket. In the following pictures you can see the updated
servo mount with a reinforced post.
.
.
.
The
files on thingiverse.com for the servo bracket have been updated to
using the new bracket.
=========================================
Again,
I'd like to hear for anyone who decides to try the bracket (contact20
(at) 1fatgmc (dot) com). Let me know if the bracket worked for you
and/or if you can see the need for any changes.
You
can find all the files to 3D print my servo brackets and other items
on my thingiverse.com account ( HERE
).
=========================================
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