Without adding all my code to the post, I can say I’m just passing a single number from the spark core to an uno. The numbers all pass over as “-1” though. For example, performing some simple math on the core, passing a single digit result to the Uno and printing it to the serial port. Printing t…

I2C between Spark and Uno

kennethlimcp March 24, 2014, 12:20am 4

Yup

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