Rotation motor upgrade came in today
As you can see it's considerably beefier than the older motor, it turns at 10rpm and is a 12v motor with a torque of 14kg/cm
As I didn't do many photos of the direct drive build the first time I figured I should take a few during the rebuild.
Here's the back of the monitor showing the old drive collar screwed into the monitor casing at the center of the Lazy Susan baring
I bought a new set of mounting brackets and collars to fit the larger diameter motor and driveshaft, I got these from Pololu although the motor itself was from eBay
New collar in place with a set screw for position
6 M4 screws holding this in place, this aint going anywhere
For the mount screws and D-Shaft collar screw I'm going to use heavy duty thread lock
The motor in place with a large M4 screw driven into the collar thread rather than the tiny little alan key jobbies that come with the collar.
On my monitor support platform I drill my mounting holes for the lazy susan baring and the clearance hole for the motor.
Here's another view of the underside of the monitor platform. You can see the USB Pololu controller that drives the motor, the 12v power supply and the wiring for the two limit switches that stop the rotation.
Bracket mount bent flat to secure the motor to the underside of the monitor platform and the lazy susan screws bolted in nice and tight, all done
All that was left to do was wire the new motor to the screw terminals on the motor control board and we are ready to test.
Nice and stable movement, solid stopping and braking at a nice precise angle in vertical and horizontal planes. The microphone on the phone's video camera makes it sound like the monitor is slamming into the switches but it's really quite subtle, more of a positive 'click'. A big improvement.
Hi,
First off, this is simply amazing - what a build!
I had actuallly planned to to a fixed horizontal monitor cab until I stumbled across your rotation tests on Youtube.
This really has inspired me and I have decided to make and attempt at copying your rotation rig.
I have a few questions that I'm hoping you'll reply to:
Regarding the Motor Controller:
Could this be powered by the PC's 12V PSU and not a separate one?
Do you remember the make and model of the PSU you went with?
Regarding the Motor Controller:
Looking at Pololu's website it can be ordered with different amp's from anywhere between 7A - 25A's
Could you let me know what you went with?
Regarding the Lazy Susan bearing and the driveshaft motor collar:
How were they fixed - I see the screws and the mentioning of lock thread, but did you drill new holes on the back of the monitor for these?
(I assume that is what you did, but I'm thinking there would be a chance of drilling or screwing into somehing important-ish)
-Thanks in advance, Nanoflower