My setup is as follows:
Using this motor controller board, I have one DC motor (I'm new to electronics, so I'm not sure when I say it's rated at 1.5V, because one 1.5V AA battery on its own makes it run perfectly). This motor is connected to the OUT1 and OUT2 terminals on the H-bridge.
I have one 1.5V AA battery, with its positive end connected to the VCC terminal, and it's negative end connected to the GND terminal. The RPi's +5V GPIO is connected to the +5V terminal, and the RPi's ground is connected to the GND terminal as well.
GPIO pins 15 and 13 are connected to IN1 and IN2, respectively. I am using this tutorial setup (with the code at 14:30, in case it didn't skip there. I do not have pins 7 and 11 in use, because I'm only controlling one motor).
After all of this, the motor does not run. I don't even know how to test where the problem lies. I have tried it with 2 and 3 batteries, still to no avail. I have also tried switching to IN3 and IN4, and even switching around the (True and False) parameters in the GPIO.output() function. Am I doing something wrong at all? I have nearly the exact same setup as the tutorial, with a few differences. Thank you for any help! :)