I followed Arduino Tutorial 35: Understanding How to Use a Stepper Motor, with the same parts as him. (Arduino UNO, 28BYJ-48 stepper motor, ULN2003 driver and a MB-V2 power supply, connected to a 9V, 1A plug.) Everything is working fine, however, the 5V chip on the power supply board gets extremely hot and I usually turn it off fairly quickly because I'm scared of breaking it. I'm pretty sure the board should be able to support the stepper, so is this normal?
Thanks,
Lucas.
If you want help, post a complete, double checked, hand drawn wiring diagram of the circuit, with all connections clearly labeled.
The chances that anyone on this forum will watch a youtube video to see what you did are essentially zero.
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I've updated my question. I hope this is enough.
The drawing is useless, because it is not complete. It does not show how anything is powered, and it does not have clearly labeled connections.
Please avoid Fritzing. Hand drawn is preferred.
The 28BJY-48 motor has winding resistance of 50 Ohms, so it should not draw more than 0.1A per winding. If the "power supply" is overheating, you probably have a wiring problem: either the output voltage is reversed, the supply is defective or there is a short circuit somewhere.
Actually, we have more than enough details. 
You said much of it for me.
So 200 mA for two windings powered - if that fairly useless "breadboard power supply" is powered at 9 V by the "barrel jack", that is a dissipation of 0.8 W in the regulator which has no heat sink. But if it is actually an unregulated 9 V "plug pack" it may be delivering 12 V which would raise the dissipation to 1.4 W. Guess what happens? 
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