8 channel relay shield with lcd touch screen shield

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vk7krj
Posts: 2
Joined: Fri May 24, 2013 4:09 pm
Location: Hobart, Tasmania

8 channel relay shield with lcd touch screen shield

Post by vk7krj » Fri May 24, 2013 5:11 pm

I am trying to use a freetronics 8 channel relay shield with an lcd/touch screen shield piggybacked on it & can't seem to get them to play nicely together. On their own, they both work as expected (after the r3 mod on the relay shield). When I piggy-back them, the relay shield works ok with the test program, but the lcd flatly refuses to show anything. The lcd is not connected to sca and scl, and there is no excessive voltage drop with both shields connected. Does the relay shield have any other connections (barring power) to the arduino?
Or does anyone have any clues as to what is going on?
Any thoughts or useful comments would be gratefully received- it's 3am and I tearing my hair out on this one!!

Thanks, Ken.

vk7krj
Posts: 2
Joined: Fri May 24, 2013 4:09 pm
Location: Hobart, Tasmania

Re: 8 channel relay shield with lcd touch screen shield

Post by vk7krj » Sat May 25, 2013 1:24 pm

Can do John, this is the beast-

http://www.adafruit.com/products/376

and this is the pdf with all the details-

http://learn.adafruit.com/downloads/pdf ... shield.pdf

Thanks, Ken.

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