I am currently going through the tutorials included with those kits that you can get for the Pis with breadboards and components, etc. Anyway, in the tutorial, I am making the following circuit:
In the tutorial, it insists you use the breadboard power supply with a 9v battery, to avoid damaging the Raspberry Pi.
I have researched the motor a little bit (They don't provide a data sheet), but I believe they are similar to adafruits 130 toy motors. For reference, they're rated at 6v, and stall current is about 500mA. The L293D has a maximum output of <700mA anyway.
My question is this, for the sake of knowing if it's possible, is that why can't I just hook this up to the 5v pin on my RPI? It is a Model 4b, and I know they are directly linked to the power supply of the Pi. The power supply I'm using for my Pi is rated at 3A, so what's the problem here?
I should note that the idea of this circuit is to use the pontentiometer to control the speed and direction of the motor.
are you willing to use the RPi as an expensive fuse?