Hi all,
I have a circuit that runs off a USB charger pack. One board is a Raspberry Pi computer. I am sending a PWM signal out the audio port and then connected to the low output headphone jack I have an LM386 amplifying the signal and then the output is fed to a servo.
So my digital PWM signal is driving the servo by way of the audio out from the computer.
Everything works great execpt I am unable to power the LM386 and servo off the same power supply it shorts out or something.. I think it is related to the input coming off the headphone jack. But I have my grounds wired correctlty.
Is there a way to isolate this and power them both off the same pack?
I have a circuit that runs off a USB charger pack. One board is a Raspberry Pi computer. I am sending a PWM signal out the audio port and then connected to the low output headphone jack I have an LM386 amplifying the signal and then the output is fed to a servo.
So my digital PWM signal is driving the servo by way of the audio out from the computer.
Everything works great execpt I am unable to power the LM386 and servo off the same power supply it shorts out or something.. I think it is related to the input coming off the headphone jack. But I have my grounds wired correctlty.
Is there a way to isolate this and power them both off the same pack?