Simple UDP Echo Server

I created a simple UDP echo server sketch for the Spark Core. You can find the code at

“A simple UDP echo program for the Spark Core Arduino based device. You can send a single byte (ie. ‘a’) of data and have it sent back. This program serves no real practical application, but can be used to learn and tinker with UDP and inter-device communication.”

It is a little more fleshed out the the Spark Core documentation for UDP Communication, and should help to get people started using UDP. See

“You can test sending and receiving UDP packets using the Packet Sender application, available for Windows, Mac, Ubuntu and Andriod.”

Available for free at