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UNO compatibility issue? Shield pins dont line up

7 years 6 months ago #581 by miaryan
UNO compatibility issue? Shield pins dont line up was created by miaryan
I assembled my shield and before powering it on I noticed what appears to be a compatibility issue with my UNO. The header sizes are different. I have attached photos of both of the sides of the uno/shield differences in pins, as well as a shot of my UNO and its headers. Are there any changes I can make with the hardware/software to make it work?
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7 years 6 months ago - 7 years 6 months ago #582 by Ray
Replied by Ray on topic UNO compatibility issue? Shield pins dont line up
You have one of the "old" Arduino UNO rev1 or 2, this models have this2 pins left.



Newer rev3 models have these 2 extra I2C pins.
Anyway, these pins are not used and you do not need to apply any changes in the hardware or software :)
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