As a christmas present I bought myself some MCP23017's (among other things) but I can't get it working. I am new to i2c in general; so i am probably making a simple mistake. I have been following this
tutorial over at tronixstuff
Here is a picture of my wiring; since this picture was taken I've added two pull up resistors (2.2o) from both SDA and SCL to the reset pin which is tied to 5v. As well I have ensured that the LED works.
As well, this is the code which I am running on my Teensy2:
So any idea's? I'm pretty stuck here. Thanks!