Quentin wrote: > Keep in mind, Ruben, that X10 uses zero crossing for timing and > datalength and the mains AC as carrier. Most X10 were designed for the > US market which works on 60Hz and X10 will not work on 50Hz.=20 X10 does work in 50Hz. If the line frequency is 50Hz instead of 60Hz, it means that in a second there are 100 zero crossings instead of 120. The microcontroller in X10 circuit board detects the zero crossings and sends/receives signals irrespective of whether the line frequency is 60 = or 50 or anything in between.=20 There could be occasional problems with X10 and its reliability may not = be high if the mains line is noisy. But X10 means low cost and secondly, = there is no need for wiring. I have been using X10 to control lamps and = appliances for the past three years here in India. I got a few modules from US and modified them for 240 volts. Using PICs 16F84A and 16F628 I also = succeeded in making my own X10 receivers with custom features and they have working satisfactorily.=20 Regards, Bala -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu