I could not get the tuner app (phone or web) to work. I also tried multiple other suggested apps for tunning by frequency, none of them worked. This simple print worked for me the on the first try: https://www.printables.com/model/1312851-prusa-core-one-belt-tension-gauge
For me I found a needles width away from max worked. I just had to make sure both belts were the same. Hope this helps someone else.
Once I had the upper belt at 98Hz, my lower was 96Hz. I had to google how to adjust only one of the belts at a time as I couldn't find this in the Prusa guidance.
I stumbled on something that stated the left adjuster screw is for the upper belt and the right adjuster screw is for the lower belt. I soon had both belts correctly tightened after finding this snippet of info.
The website doesn't seem to be sensitive enough, most strums were completely missed, while background noises would often be detected. With a little more sensitivity or an option to run continuously (rather than just when a "hit detected"), this tuning method would be a lot more useful
On the phone app tuner update, since you have to put the microphone end of the phone toward the belt, can we have the Hz reading inverted so it shows right way up in that orientation?
For me I found a needles width away from max worked. I just had to make sure both belts were the same. Hope this helps someone else.
I stumbled on something that stated the left adjuster screw is for the upper belt and the right adjuster screw is for the lower belt. I soon had both belts correctly tightened after finding this snippet of info.
This may be obvious and just something I missed!
Will help late night tuning : )