troubles using more than one PCF8574

[Dave]

maus, Also I noticed that you are sending it:i2cwrite SDA,SCL,ADRESS2,out2. Where is out2 being set? I beleive it should be out1?

Dave Purola,
N8NTA

[maus]

thank you for your replies dave,

Yes i used two "A" types, and indeed out2 should be out1, but this is just a short test program, so in my code it still doesn't work right, cause the out which should be sent to the second PCF is activating the first one,

So anybody any more ideas, let me know

thanx

[Dave]

maus, Without seeing the actual circuit I can't say anything else other than check with a multimeter that all 3 programmable address bits are in different strapped states. You have 1 IC strapped for an address of 0 and the other for an address of 7.

Dave Purola,
N8NTA