I am really new to all of this. I am trying to control a singular micro servo with my nano every. I know your not really supposed to do this but I used my nano to power the servo it works for the most part. it will start to execute a sweep code but randomly jumps back to its start position and this just keeps repeating. it rarely completes a full sweep. I am thinking this is a power issue? I got a 3.7 volt li-ion battery (this voltage should fall within operating range of my servo) to try to provide external power. I just wired it up and nothing happens. my guess is that I did it wrong, I am trying to do this without the use of a breadboard, and could find no info on this anywhere. any tips would be very helpful.
No, this is a "you are destroying your nano" issue.
Power your Nano with the USB cable, and power your servo like this drawing from ArduinoGetStarted.com (the green connector is external power)...
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Wow, that is exactly what I was looking for thank you. Dang, I was kind of close with my wiring. I just don't have a way to connect ground to both my servo and nano, is that essentially what the green connector is doing in the diagram?
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The green connector is power and ground.
Ok so this connector has 1 power and 2 ground then? Thank your feedback.
Nope, it has two screws one for + the other for - but you can place two reasonable sized wires under each screw. You can wire nut or wago connect two or more wires together for power.
Oh, i get it. I think I know how what I need to do now. thank you both for your help.
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