can i power an arduino uno that has a 9g micro servo an lcd screen and an ultra sonic sensor using a power bank
i forgot to say the power bank provides 2.1 amps at 5 v
If that is even nearly true, you can.
Some powerbanks have auto shut off for minimum current draw quite high, so you need to try
I have found this true. I have a power bank that easily charges my phone, but does not run a Nano.
No.
Yes.
But you may need to ensure your circuit draws enough current at all times to prevent the power bank from shutting down. For example you could attach a number of LEDs (with series resistors).
Obviously, deliberately wasting power like this will run down the power bank quite quickly.
