Connect/share data between two seediuo v4.2

[KayG]

Hi,

There are many ways to connect two Arduinos. You can try the I2C communiction. Connect with a grove cable the I2C ports and use the scripts.

Communication via I2C port doesn’t work

Summary: This seems to be a WIO bug. When WIO is an I2C slave and receives its first transmission from a master it hangs itself and hangs the I2C bus (holds the SCL and SDA low). Tried it with and without 10K pull up resistors but results were the same. Description: Ok here is what I did. I ran an Arduino Zero (because it is 3.3v) as a slave and the WIO as a master. I connected it off the backport instead of through the Grove connector (the pins marked I2C1_SDA and I2C_SCL). I also ma…