After pointing the grounds to the Out header and led&switches to the In and following this posted by Jordan on the monome.org forum, it looks right:

Facing the boards bottom side up:

SWT-GND should all get 1-8 (reading from right to left respectively)
LED-GND should all get 9-16 (reading from right to left respectively)

SWITCH should all get 1-8 (reading from top to bottom respectively)
BLUE should all get 9-16 (reading from top to bottom respectively)

Cheers!

At one point I basically had the IDC cables in reverse and turned 180 degrees.

Double check to see if you have the cables correct with the right orientation.

Can you explain this a bit more – “Originally all the lights would come on, but I was matching in with in and out with out, but I think I was supposed to match in to out and vica versa – that is what I have now and I get the scrolling – which seems positive.”

I think I have the same problem. I’m getting all lights on and a scrolling row of unlit when I power on.

Have I soldered the LED cables to the button header on the shield?

Thanks
Tom

Thanks for pointing that out.

Jordan

With the schematic, the most important things to know are that the numbers next to each of the lines coming out of a ‘box’ indicate which physical pin number they correspond to (i think they’re usually numbered from top left to bottom left, then top right to bottom right). Looking at these numbers, together with a datasheet for the component, you’ll be able to tell which leg of a component should be connected to what.

The other thing is that the green paths that disappear into thin air also have a code written on them, those codes often have a ‘twin’ somewhere in the schematic, and in ‘real life’ those paths are physically connected. In my diagram there are also some codes without twins, those are the ones that go to the arduino (which i haven’t included). Those all begin with ‘AR’, eg ‘AR_PIN9′.

Good luck!

@basementleds that schematic looks awesome, unfortunately I’m a total n00b with this stuff so it might as well be in Hungarian. I keep promising myself that at the end of this once I have everything working, I’m going to try to pen an idiots guide to soldering an aruidonome – Soldering by numbers.

Am I right in my assumption that the scrolling horizontal turn on thing is a good sign (ignoring the missing column – which is sporadic and should be an easy fix).