im using an arduino nano to control a rc plane im building with nrf24 4 channel communication 4 servos and one bldc motor with an esc40A. the thing is that the current coming from the esc40A does not seem to be enough to power all of this, so i need to use the USB port AND the VIN port at the same time so everything gets powered. can anyone help?
Make and post a clear wiring diagram.
The onboard 5V regulator on Nano isn't strong enough to deliver enough current (you will damage it!). Not even the USB port can supply enough power.
You need an external 5V-UBEC to ensure a reliable power supply.
is the 5v output of the esc40a good for that?
I don't know your ESC specifications.
If your ESC can deliver at least 5A (BEC), it should be sufficient.
If it only delivers 1-2 amps, it probably won't be enough for reliable operation.
ok it only delivers 3A what can i do?
can anyone please help me with how i can get enough current for it to work while staying low on weight because i am building an rc plane?
I also build and fly RC planes and use Arduinos or AVR-chips for lighting-effects or "waving wings" (angry bird).
To provide enough power I use different UBECs, depends on numer of servos, size and weight of plane.
I used "Hobbywing UBEC 5A", "HENGE 6A UBEC 5V", and a lot of other no-name UBECs. The weight is often between 15g and 25g.
If you want to save weight, remove you "pin-shild" (servoshield or however you call the red board shown in you picture) and make your own "adapter" from prototype boards for your servo-connectors.
Use a 5A UBEC