Matthias Urlichs a écrit : > 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...)
That's what I did on my meter, but: * finding a phototransistor sensible to red light is not that easy (most are sensible to infrared) * I added a red diode to report the blinks from the watched diode * I didn't design the sensitivity circuit carefully, and finally had to cover the whole meter in a black box, because even with electric lights on, the ambient light level was so high that the red blink was not noticed (repeater diode always on) -- NH ------------------------------------------------------------------------- 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
