I'm not specifically aware of it being done on an Arduino, but I'm sure it has been. There is a lot of development that has been done using the Raspberry Pi.
I haven't used this one but just saw it online today:
https://plus.google.com/+ArjanvanVug...ts/iS7eTiicWqr
OLA has done a significant amount of RDM development that uses the RaspberryPi also and is open source:
https://www.openlighting.org/