Make sure to have a thick enough wire for it. If you don't need that much current, consider removing one of them so you only have 6A or 4A, since 8A is quite a bit if you aren't using it (and you might waste electricity in the conversion process). Without a lot of information, I'm going to say yes. If it is safe to use a 5 volt 8 amp power supply with these sensors. In fact, if you have any electrical connection (even a signal) between those two, you'll need a common ground to ensure integrity of the data being sent. Whether or not it is safe to have a common ground on arduino with an 8 amp power supply I've made a diagram of my circuit in Fritzing (not actually tested yet due to fear of ruining my sensors). It was not until I powered my IMU off the Arduinos 5V power that I was able to run the sketch flawlessly. While powering my IMU off the BEC and sending motor PWM signals, my sketch would run for about 10 seconds then freeze. Here is a problem that I've encountered before: My question is whether or not it is safe to have a common ground on Arduino with an 8A power supply AND if it is safe to use a 5V 8A power supply with these sensors. I'm not sure if it is safe to connect my batteries wires to my sensor with the 125A that it can put out. I also want to use a cheap chinese voltage sensor to sense the voltage from my 5000mAh 25-50c 11.1v battery. I would set these up in a parallel circuit, which would give me 5V 8A (theoretically). Now I want to use the 'BEC' power from my electronics speed controllers.Įach of the 4 ESCs gives 5V 2A. Until now I did not need to use an external power source for my sensors. I've been programming and testing an Arduino based quadcopter for the past 4 months.

Fritzing 5v power supply