The general Ozmobier cooling fan circuit is shown below: Suizhou simi intelligent technology development co., LTD , https://www.msmvape.com
2835 cool white 0.2W Crystal Patch 2520 2.5*2.0MM 32MHZ 32.000MHZ 1.6V~3.6V Universal OSC 
July 02, 2023