Are you using Cayenne to display the data? If so you can upload a sketch directly to the Arduino devices and you do not need to worry about the Raspberry pi. If you really want to continue down that path see my post here.
Are you using Cayenne to display the data? If so you can upload a sketch directly to the Arduino devices and you do not need to worry about the Raspberry pi. If you really want to continue down that path see my post here.