Attaching Arduino to Pi

Is it possible to connect the Arduino Mega to the Pi (and access it with Cayenne) without a WiFi or ethernet shield? Can I use a simple USB cable similar to how I hook up the arduino to my Mac? Any help appreciated.
Thank you.

Hi @robertmenard63,

Yes this is possible, you can use the Cayenne serial USB connection, here:
https://github.com/myDevicesIoT/CayenneArduinoSamples/blob/master/Connections/ArduinoSerialUSB/ArduinoSerialUSB.ino

-B