DIY Rotary tumbler polishing Machine | Arduino project

PCBA from $0（Free Setup,Free Stencil): (New Users Get $30 Coupons) Hello friends In this video I have build a mini Rotary tumbler polishing machine, This machine is powered by Arduino and custom PCB User can set the time for tumbler rotation. Custom PCB used in this project 💻visit for more projects :- 👉 👉 👉 FB page :- This video is made for entertainment purposes only. Please use judgment, care, and precaution if you plan to replicate.