Has anyone used the following modules, or similar, with a PIC? http://www.maplin.co.uk/module.aspx?ModuleNo=22965&doy=12m5 I want to build a device which measures the time between pulses on my electricity meter, and send the result to a battery powered logger/display unit and/or PC, and i'm hoping they will work. My meter is one of these: http://www.btinternet.com/~jon00/images/meter.gif (1000 flashes per KWh) -- Chris Sumner -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist