Connect/share data between two seediuo v4.2

[l.roca]

Is there a way to send data from one seeeduino to another one so it can be used by its program?

[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…

[Dennis_Mabrey]

Serial or I2C are the normal ways to do it. There are others ways but these are easiest.

Serial is easier to code and is faster as it is duplex communication.

Wiring example with code can be found here: http://www.martyncurrey.com/arduino-serial-part-3-getting-started-with-serial-communication/

The example uses an Arduino Nano but just hook up the same pins. Tx on one Arduino to RX on the other Arduino.

Also note that if the TX/RX pins are wired up you CANNOT UPLOAD CODE as it uses those pins to do so. Disconnect the wires before uploading code.