I’m building a line follower for my school project and I haven’t had any problems until the moment when I had to build the circuit for the sensors, I ended up connecting (in my scheme) one sensor GND and VCC to the other and then, connecting both cables to the 5V and the GND from my arduino UNO. I don’t know if it’s the optimal thing to do.
I’m also not sure if using a 9V battery or using 9V AAAs would be the best option, I’d like to listen to your thoughts since I’m very unexperienced.
I’ll post my scheme to clarify what I said. If you see any mistake, anything that should be added, anything that should be changed or removed, pls, let me know, I’ll appreciate it a lot. Thanks in advance!! :).