Geeetech

I have been building another 3d printer and finally got to connect. The new board I just bought from you wont do anything but one startup boing, then all steppers drive erratically and crash the endstops. I replaced the new board with the one from my other printer and everything is good with my new printer.

thanks for your post.
i wonder that do you firm the ware in the right way?
Does the stepper motors move?

I cannot do anything because once I power up the board than after one boing all three axis start moving and wont stop till I power down.

I took the board from my other printer and replaced it to this one and everything is good, in fact I have already printed with it so I know there is nothing wrong with the printer mechanically.

could you send a pic to our mailbox(myorder@geeetech.com).
after we check,we are willing to reship a new one to you.
thanks for your understanding.

I have another question that is because I noticed there were no heatsinks on the stepper ic's, are they needed?

yes.they need the heatsinks.

ok, now I feel so ignorant. Why can I not get my motherboards to get past their debug stage?

Have you visit our WIKI?the link is http://www.geeetech.com/wiki/index.php/ ... lectronics

here is some details that May be useful to you

What you said not through is compilation or download？if is compilation,there is something wrong with your software.if is download,can you find your port in your device manager? if not ,maybe your driver is not good.