Hey guys.
I feel super stupid atm. I can’t get anything to work as expected. I need to get back the basics here.
I am have the LPC17 and a DOUT connected via J8. I hooked up an LED to Vs and D7 and entered ‘set dout all 0’. I am still getting 5v at D7 all the time.
Nothing else is connected.
What am I doing wrong? Board specs attached.
Thanks!!
-eric
Why don’t you try setting all the Dout’s to 1 with the command “set dout all 1” and see if it changes things. The outputs might be inverted in your configuration.
Pete
Hey Pete.
Ya, I tried that already. I also tried setting individual pins to 0|1 and nothing happens.
Have you eliminated basic wiring error? (I suppose the cable could be in backwards…)
Can you post a picture?
Hey Duggle.
I am getting voltage to the DOUT board, tried using J8 and J9. Here are some pics, thanks for your help!!
https://s3.amazonaws.com/uploads.hipchat.com/14874/54948/jijmbr9a06d226i/IMG_9264.jpg
https://s3.amazonaws.com/uploads.hipchat.com/14874/54948/szsbs0p7lz9nyxs/IMG_1599.JPG
hi as i see on you pic it seems the 74HCT541 seems to we wrong connected…
/spirit
Correct!
@fourfour: don’t forget to spend spirit a beer for his careful observation! 
Best Regards, Thorsten.
@spirit: oh my, thanks for catching that.
Unfortunately, that didn’t solve the issue. LED still on all the time. I checked my wiring again over the whole board.
(how do you send a beer?)
It’s not clear from the photos the connections from core to dout (all wires are white).
Why not IDC/ribbons? They can be sourced cheaply (from the right places) they are very quick, neat, extremely reliable, and hard to get wrong connections.
@duggle: I assumed they just mirrored J8
e.g
Vs
Vd
Si
Sc
Rc
I have some ribbons on order. The site didn’t state that I needed to order them separately.
Thanks for your help.
ahh yes you also see that on the pic but you use the wrong Row pins…
you need to use
J9:
VS
VD
SO <----!!!
SC
RC1
SI = for DIN (Buttons/Encoders)
SO= DOUT (LED)
/Spirit
Ok! We have liftoff!
Thanks so much everyone.
