I posted on this topic quite some time ago and got sidetracked by a major move. Now I have my HiFi set back up and working and would like to continue the project. The turntable is a Thorens TD-124 with a SME tonearm. I am now using a techniques Safety Raiser. It works OK, but is not ideal. The main dilemma I have is space on the tone board for the lift device. So the little Fwend and Q-up lifters will not work due to the area required. The Safety Raiser just fits, but it is old and warn out and is becoming unreliable and glitchy.
I would like to fabricate a lifter that is controlled by optical or proximity sensors. Have been looking at mini linear motors on eBay and have found this one I think will work:
I would position it under the tone board and have a rod attached to the slider and passing up through a hole in the tone board that would lift the tone arm.
The way I would like it to function is this:
The lifter would start in the low position.
When the tonearm reaches the end of the lp the lifter should move to the high position and remain there.
When the tone arm is moved back to the start position the lifter should return to the low position.
This would be my first Arduino project. Any advice is welcome. I am mostly interested in learning what Arduino devices are appropriate. And is this linear motor controllable.