UPDATE - 10 September, 2018 - The good folks at Steplab in Europe have contacted me with an update to their site address
Main site - https://www.steplab.net/
Couplers page - https://www.servocity.eu/ct/servo-en/servo-couplers/
When I decided to put together a pan set-up for my big Talon to carry a 2 axis brushless gimbal, I went looking for components that I could buy to build a stout 360+ degree pan mechanism that didn't need gears, belts or extra linkage parts and I found the components I needed in a company called Actobotics. This project then is an extension of that earlier work on my big Talon and some of the work I put into the Mini Talon.
After buying and building several Pan and Tilt set-ups I got tired of how cheaply the purchased ones were and how flimsy most were. The biggest problem has always been the pan axis is simply never robust enough. When I did find something that was strong enough (for me) it was always too heavy and too expensive or presented too much wind area.
With the Actobotics Pieces, their Futaba servo coupler and bearing plate, I was able to build a raised bearing that made the servo connection very strong. This structure keeps all the stresses off the servo shaft and its bearings and elliminates unwanted motion or wobble.
Included here are the STL files and a few pictures of what it looks like. I have set it up to be configurable with three different mounts for flat decks, three different camera plates to accomodate different cameras and a version that puts two cameras in an over-under configuration that could be used in a head tracking set-up. Please see the "PnT Configurations" picture for more ideas.
The 360 Servo
The base Pan servo is the current version of the GWS S125-1T Sail Winch servo. It has good centering characteristics, will actually travel 385 degrees, it's quite smooth and makes monster torque (~7kg). It is important to note that there are two versions of this servo, one with 23 tooth spline which was discontinued 2 years ago and the one for this project which has a 25 tooth spline identical to Futaba.
Parts and Specifications:
Bottom Unit Printed Parts
GWS Servo Plate
GWS Servo Deck Plate
Bearing Deck Plate
Top Unit Printed Parts
Std Mobius Mount
Std Dual Camera Mount
Std Misc Camera Mount
Over-Under Camera Mount
Pan - GWS S125-1T (25 tooth)
Tilt - 9g servo
1x Actobotics #525142 Servo Extension - 25 tooth
1x 0.375"ID x 0.625"OD x 0.156"L Ball Bearing
*1x 3" x 0.047" Steel Wire
2x M3 x 20mm Nylon PHS
4x M3 x 8mm SHCS
6x M3 Flat Washer
4x M2.5 x 8mm SHCS
4x M2.5 Flat Washer
4x M2 x 6mm SHCS
4x M2 Flat Washer
4x M3 x 15mm Aluminum Stand-offs
Weights and Measures
-Total weight with all hardware and a true 9g tilt servo - 93 grams
-Pan rotaion - 385 degrees
-Tilt range, single camera - 0-70 degrees (down)
-Tilt range, over-under camera - -19 (up) to 45 degrees (down)
For more detailed information and images please go to my Wiki project page at this link:
Simple Compact Pan and Tilt: http://www.thingiverse.com/thing:1658134
Simple Offset Pan and tilt: http://www.thingiverse.com/thing:1658131
Lightweight Pan and Tilt: http://www.thingiverse.com/thing:2122735