Voltage Step Down Regulator

CAUTION _ READ BEFORE PROCEEDING!

This regulator and stepdown controller works, HOWEVER, do not drop voltage to 12 V for fans or whatever you want to power AND use the USB port to power USB DEVICES ThiS WILL FRY YOUR USB DEVICES SUCH AS YOUR PI!!! I checked the voltage coming out from the USB connection and 12v it shows 7v out of USB at .4 amp. This will wipe out your pi and other devices!! I will not be responsible for your doings. Please take warning that you MUST DROP VOLTAGE ON THE READOU