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Re: multiple GPIO triggering issue

Posted: Sat Jan 04, 2014 12:59 am
by yonubear
solved!!!!!

I WILL SAY IT I AM A DUMBASS

I was reading the schematic for the Optocoupler backwards I had the collector and emitter reversed as soon as I flipped the gnd and gpio wire one of them it worked so now I get to redo my perfboard may have another odd question but I will sort that out after I am done fighting the hardware.


Thanks,
Yonu

Re: multiple GPIO triggering issue

Posted: Sat Jan 04, 2014 1:43 am
by FLYFISH TECHNOLOGIES
Hi,
yonubear wrote:since they will all pull off the same 3.3v rail anyway can I simply pull the pull up current for each pin from the gpio side of my 1wire or is that a stupid idea?
.... huh, I'm not sure that I understand the question... If you ask to connect pull-up resistors to 3.3V GPIO pin, then the answer is: yes, you can.
yonubear wrote:Something along the lines of this diagram
These diagrams are not very readable - even when elements labels are present, the observer has to take a look into some elements (eg. transistor) datasheet for pinouts to get the complete picture... I preffer "normal" schematics of the circuits instead.

Anyway, your chances to get reliable answers is dramatically increased when you attach schematics to your questions....


Best wishes, Ivan Zilic.