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The Elettra control system has been running since 1993. The controllers of the storage ring power supplies, still the original ones, have become obsolete and are no more under service. A renewal to overcome these limitations is foreseen. A prototype of the new controllers based on the BeagleBone embedded board and an in-house designed ADC/DAC carrier board, has been installed and tested in Elettra. A Tango device server running in the BeagleBone is in charge of controlling the power supply. In order to transparently integrate the new Tango controlled power supplies with the existing Remote Procedure Call (RPC) based control system, a number of software tools have been developed, mostly in the form of Tango devices and protocol bridges. This approach allows us to keep using legacy machine physics programs when integrating the new Tango based controllers and to carry out the upgrade gradually with less impact on the machine operation schedule.
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