Homemade Natural cooling fan idea
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhbGhb46eTDO0XwknK-1c2ceiyHC7FpL2tSBYY7y9J30JghbS63LbVMtKRtOzINJr7A8d85k6sR_YIYDyZt4t7-qL23jNXgw75elAQsZ53p-IyQL5vmUt30QMIINaJStKlvyVzNfulIxFQ/s1600/1620824894118507-0.png)
Create a double layer soil pot, first layer and second layer between 2 to 3cm or more or less( need according) first layer and second layer between filling water. Used, bldc motor or ac induction motor with controllers. Motor connection in soil back side. ...