Hey! My project consists in an Arduino which controls a LED strip alimented with 12V so I put the 12V alimentation on the + on my breadboard.
I also have a Bluetooth receiver and a SoftwareSerial to link it to the Arduino.
The problem is that now I use an other alimentation, a 12V one for the Arduino. (So, I use two alimentations, one for the Arduino and one for the LEDs).
So I'd like to link the VIN on the breadboard so both the Arduino and the strip use the alimentation.
I tried, but when I do that the Bluetooth Serial begins to bug, receive weird characters except the first one which is almost always correct... And when I use two alims, all works like a charm.
Is my Arduino undervolted? If so, any solutions to use one alim for both or should I use two?