Logging all data is not necessary in many cases. If you log only the=20 changes and include a time stamp you may be able to reduce the storage=20 requirements without losing data. Of course, if the data is constantly=20 changing, the overhead may exceed the savings. On 5/28/2013 8:15 AM, Spehro Pefhany wrote: > At 11:32 PM 27/05/2013, you wrote: >> I'd love to be able to find something like >> http://www.powerwerx.com/digital-meters/dc-inline-watt-meter-power-analy= zer-powerpoles.html >> but >> for smaller currents. >> >> >> --=20 John Ferrell W8CCW "The pessimist complains about the wind; The optimist expects it to change; The realist adjusts the sails." William A. Ward --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .