Communicating with the spark.io via atmel chips atmega328p, attiny, etc

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@girnigoe, you could use a couple of easy methods:

  1. Serial (UART) between Spark’s Serial1 port (tx/rx pins) and an Atmel processor
  2. You could run the Atmel processor as an I2C slave with the Spark being the master
  3. You could use SPI with the Spark being the master and Atmel being slave

You will find most members will refer to Arduino stuff, not just Atmel processors. Here is a member who was setting up serial communications between an Uno and a Spark:

:smile:

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