3D Print your own intermittent mechanism!
Watch the video - https://youtu.be/Le-PVXUCl0M
Requires 4 bearings of 6mm ID, 15mm OD and 5mm width.
3D Print with no supports - parts flat on bed. You may need glue to secure the drive gear to the 6mm shaft depending on your 3D Printer tolerances.
Fusion 360 Source files provided to Patreon supporters - https://www.patreon.com/posts/geneva-mechanism-13367090