i need a way to change frequency in the 0-150 Hz range, the arduino pwm
Just google:- arduino pwm frequency change
i also need a way to change voltage and current
No the voltage output from the arduino is a fixed logic level. The current output depends on the load.
here is the diagram of the circuit as it is now.
Thanks
as you can see i have .......
Sorry I can't make head nor tale of that schematic. Too many loose ends, what is connected to what?