Hi, Rob Conway: > My intial project being completed I am looking at extending my 1wire > network..I would like to be able to monitor my electricity usage in > real time. I am in Australia and have a "disc" type kwh meter. I > understand you maybe able to see the black stripe on the disc however > my meter is fairly new 15 YO and the disc is very thin ~2 mm and is > set back at least 10mm from the Perspex cover of the meter.
Basically you'd need an infrared LED and photo diode, and something that notices when the light level changes a bit. http://www.elv-downloads.de/service/manuals/EM1000GZGZS/62575_EM1000GZ_GZS_km.pdf has a simple schematic on page 5 that you'd probably be able to adapt. Connect it to a DS2423 (1wire counter), and you should be done. I need to do the same for my own energy meter, except that mine has a nice red LED that blinks once per Wh. (*Way* too fast for my taste...) -- Matthias Urlichs | {M:U} IT Design @ m-u-it.de | [EMAIL PROTECTED] Disclaimer: The quote was selected randomly. Really. | http://smurf.noris.de - - I slept and dreamed that life was joy. I awoke and found that life was but service. I served and discovered that service was joy. -- Jonathan "huggsman" Huggins <[EMAIL PROTECTED]> ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
