Hello, i’m new on arduino dev.
I’m creating a project to read RFId and send to bluetooth.
All worked fine some times. Usually the bluetooth module can’t communicate. If disconnect the RFId module, the bluetooth works fine.
I think the power is insufficient or the RFId module spend many power.
So I need an alternative power supply or no? How use it? both modules spend 3.3v, using a 9v battery, what is the best regulator?