Electronics > Beginners

Motor on a rotating mount [Solved, its called a "slip ring" ]

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Sudo_apt-get_install_yum:
Hi all!

So I’m doing a small project that requires 360 degree movement in two axes. I’ve designed it so the motor for Y-axis (tilt) is attached to the X-axis (pan).
The problem is that the cables get all twisted...

Is there a "module" type of a thing that can couple a bipolar stepper motor cable, 4-wires and 1A per phase?

I know a thing like this must exist because it’s a common problem but I can’t seem to find any of the shelf type things...

Worst case scenario ill make it myself using pogo pins and exposed copper traces on a PCB.

I did solve a similar problem at a previous job by using two coils, one for the rotating mount and on for the static part (it was just for communication)   

RoGeorge:
In case you want to avoid mechanical friction, you can transfer the energy to the inner motor using the magnetic field, i.e. a disc shaped transformer placed at the mechanical joint.

beanflying:
What you need is a Slip Ring. Used a fair bit in stage lighting for two axis movements (possible source of hardware for you) eBay auction: #323594909082 or here is an example eBay auction: #282551915466 I brought some of these earlier in the year to play with a single axis 360 degree movement.

Psi:
Lots of slip rings are available on aliexpress as well.

https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20190115032820&SearchText=slip+ring

beanflying:
Just because it is Big Clive  :) Look at the insides of the teardown and use some ideas on your own project.

https://youtu.be/i3dHP6ehGY0

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