Hi just a couple questions. I want to attach a fan to this board, can I use the hole down the bottom? They are marked 12v and GND but I thought I better check. Also is the second row of holes under the z-axis for the second z-axis motor? Thanks in advance.
Yes to the Z axis motor question.
For fans (on all the time) I use the 12v and Gnd that are between each of the axis outputs. There is one just under your written 'Z'.
