I'm trying to get my NEMA 17 stepper motor working via Arduino.
As a power supply I'm using a 24 V DC power supply adapter, 24 V 2 A 48 W AC to DC converter transformer 100~240 V AC input with 5.5x2.5 mm DC tip.
I cut off the DC tip to expose the VDD and GND wires. I hooked them up into my breadboard and when I plugged it in the wires hooked into the breadboard sparked and fried some of the wires on the power supply (like the positive red wire had some copper threads which got burnt off.) The power supply also had an LED light when plugged in, which is no longer working.
I'm just trying to understand what I've done wrong. I think the GND and VDD wires touched each other, but wouldn't this just short circuit instead?