Summary

I typically use old smartphones to monitor my machines. My previous method was to simply clamp car smart phone holders to my workbench or other such hacks. But I figured, it was time to make something that worked better.

To make this exact one, you will need a car window smartphone holder/mount made by Motorola for the original Motorola Droid. I've attached an image of the exact mount you should use. I figure most people will simply print off the arm pieces though. :)

With a smartphone attached, it does wobble a bit when nudged. That's just the weight of the phone acting against the potentially long arm. You certainly don't have to use so many links as shown.

Non 3d printed parts:
25mm x 3mm machine screws
3mm fender washers
3mm nylock nuts
a rubber band
Motorola Droid window mount