This sketch will readout RF power and SWR from any SWR bridge (for example ‘monimatch’ type). As this ‘monimatch’ type of bridge is frequency dependant, the meter must be calibrated for every band. Therefore, I have foreseen positions for 6m, 4m, 2m, 70 cm, 23cm and 13cm bands.
Although this is not one of our projects, we will be building one soon!
http://www.qsl.net/on7eq/projects/arduino_pwr_swr.htm