Motor Wiring order to RAMPS 1.3

Hi there

I bought a Arduino Mega 2560 with RAMPS 1.3 with all the electronics pre-assembled on Ebay.
Building a Rostock-reprap with modified marlin FW.
Also with the package came 4x NEMA 17 steppermotors which should have been bi-polar but
have a socket for 6 wires which propably would indicate that they are uni-polar?

I am having a hard time getting the motors to work even a bit. The board connects well and pronterface indicates all is good to go.

I connected different pins on motor side and found out that the pairs giving friction were pins 1&4 and 3&6(this would be a pair...right?)

Well anyways the wires included were twisted so that the pairs were connected on the RAMPS to 2B&2A and 1A&1B - so they are
side by side.

SO my question is Should a PAIR be placed on the outer and the other on the inner pins on the RAMPs? - like 2B&1B and 2A&1A?

I would appreciate help on the matter before I just try to change/fry ´em

Thanks

FinnRAP

No, the pairs go side by side, one on pin 1,2 and one on pin 3,4.

The most common mistake here is not to set the current. Turn the trim pots on the pololus up about 1/4 of the way. If you have a meter - and if you don't, get one - then you can double check the wiring of the motor by measuring resistance, and you can set the trim pot accurately by measurin the voltage on the wiper, it should be set to about 0.4V on real pololus.

Thanks Andrew for the reply.

I have done that already a couple of times.
So i cleaned the RAMPS from all possible dirt and bad solder connections interference and I got the testFW finally working moving the motors nicely in unison.

One hurdle down;-)

Tried the JC´s firmware and now its time to tweak it

But I´ll be back to ask some more - I am sure of that...