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My Lp60 ended up doing this too. Unfortunately there's no speed adjustment, but if you want to measure, print out a pattern (I'm on mobile so no links handy, but I know I've seen several available online) that you can put on the platter, then use an app on a smartphone to strobe at the required frequency (I just searched strobe on an Android phone when adjusting my cousin's Technics that has the dots on it).
Edit: Here's a simple one you could use with this app.
Hey, I'm the designer of the slipmat. There are a number of third party strobe apps in the Google Play store which will give you the same effect. Strobily Free is one popular example. Here are some tips for using any of these third party apps:
In both instances, set the duty cycle to as low as your device will let you go. Anything under 10ms should be fine.
You may have to tweak these frequencies slightly because most phones perform differently and the timings need to be very precise to work properly.
I hope that helps!
You don't need the alz life app to do this. You don't need a 120 Hz phone or tablet to do this either. 99% of the smart phone in the last 5 year should be able to strobe flash the camera LED flash at 40 Hz. So you use something like the free Android app Strobily that can do the strobe light and play any of the '40 Hz Gamma - Pure Tone Binaural Beat' from Youtube audio at the same time and get the full effect. Do this in a darken room and point the flash against a blank wall or even one with your favorite picture on it.
Strobily is actually a pretty neat flashlight app. There's only one use case, though: annoying your friends once.
For Android, Strobily might work. Haven't tried it myself.
Try this, its has display strobe
Here's the app in case anyone is curious.
found this one for any android people: https://play.google.com/store/apps/details?id=com.tp77.StrobeAd&hl=en