Re: Is It Broken? Home › Evil Mad Scientist Forums › AxiDraw › Is It Broken? › Re: Is It Broken? January 26, 2017 at 12:04 pm #22807 Windell OskayKeymaster OK, great. If you you do want to use an alternate power supply, it should be 9 V DC, regulated, with at least 1.5 A true capacity, on a 2.1 x 5.5 mm center-positive plug.