Has anyone Hacked the," Nsd Power Ball Sm-01 Speedometer ?

Has anyone Hacked the," Nsd Power Ball Sm-01 Speedometer ? The Sm-01 ( the speedometer of Nsd power Ball ) Functions are: a. the count of revolutions ( hundred unit ) b. the current RPM c. the historical highest RPM/ the current highest RPM d. the physical index, 30 sec., 60 sec., 90 sec. The above-mentioned functions work individually. The speedometer can make users understand the use state of PB and provide real figures for reference. It combines the effects of rehabilitation, entertainment, and contest. Can anyone explain how this speedometer works. Is it Optical ? Since the Power Ball has 5 LED's incorporated in the Gyro Ball does this trigger the output ? Or is it magnetic ? When I, place compass next to the Power Ball the compass dial spins like a motor. How can I, use this speedometer to registered the speed or RPM of wheel ? Looking forward to hearing any suggestions, on how I may HACK this Great Speedometer/ TACH . This speedometer can be found on eBay for about $15.00 it's small and compact. It surprises me that no one has Hacked this for other uses !

helium4amc3 years ago

Having just dismantled my Powerball, I can say that there is a magnet embedded in the plastic opposite the little hole for the starting string. Because that is there (and there is no sign of anything optical), I assume the speedometer is magnetic. A hall-effect switch of some sort, I suppose. I have just noticed the date of this post (5 years ago!), but I have typed my response now, so I am posting it anyway! I hope you found what you wanted back in the day!