IO Expansion methods

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rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: IO Expansion methods

Post by rimai »

You got the wrong version.
The new I/O modules are version 2.2.
I updated the download page with the v2.2 eagle files.
They no longer use 328p. They use PCF8574 as I mentioned above.
Roberto.
Diverjoe
Posts: 33
Joined: Thu Nov 24, 2016 7:19 am

Re: IO Expansion methods

Post by Diverjoe »

I read about the PCF8574 chip on TI's site. Seems straight forward - less complex than using the 328P. But the question remains. How do I get more than just an on/off value from it?

BTW - I cannot seem to locate the 2.2 eagle files for IO on the download page. :-(
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: IO Expansion methods

Post by rimai »

What do you mean as more than on/off?
Try refreshing the browser.
Roberto.
Diverjoe
Posts: 33
Joined: Thu Nov 24, 2016 7:19 am

IO Expansion methods

Post by Diverjoe »

Like
X = analogRead( i2cio-pin1)

Also didn't find newer Eagle files

And how do you send data to pin 1 vs pin3? I get the example above except for this.

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rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: IO Expansion methods

Post by rimai »

No. For reading, just use the code I posted before:
http://forum.reefangel.com/viewtopic.php?p=54240#p54240
Roberto.
Diverjoe
Posts: 33
Joined: Thu Nov 24, 2016 7:19 am

Re: IO Expansion methods

Post by Diverjoe »

rimai wrote:No. For reading, just use the code I posted before:
http://forum.reefangel.com/viewtopic.php?p=54240#p54240
Not sure how I missed the 0 in channel.


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