So my 12 year old wanted to try this out, so we got almost exactly the same items in the video, but with weird results. The board seems to pulls just over 25A and causes issues for the power supply. We put a massive resistor on it and now the power supply goes to about 36v and still ~25A. So the resistor gets super hot, the board gets really toasty, yet refuses to heat anything up in the coil. We contacted the seller of the driver and they agreed something must be wrong since it’s marketed for 20A. The sent a second board, but behaves exactly the same way. Anyone seen this before?