DIY steel ball turntable ( wooden board model & electronic )

product name : Steel ball double-layer turntable infinite loop Material Introduction : (New Zealand and Australia grade) light color Not easily deformed Not prone to mold 100% man-made forest (certificate included) Specified materials for laser engraving and molding machines 3mm dense board (environmentally friendly recycling) Place of origin/manufacturing method: Made in Taiwan Designed and manufactured in Taiwan Product Size : 257x165x178mm Package Contents : Wooden parts package, hardware parts package, electronic parts package, manual Product desciption : It is designed as a double-layer runner and then the steel balls are brought upward and dropped to the runner, watching the steel balls spin on the runner. Then it dropped to the second wheel below and continued to rotate. It was indeed very interesting and therapeutic..