HelloAs the 1-wire counter is discontinued I tried to make my own counter from ds2408 and 8-bit counter with bit output 74hc590. It all stared when my energy supplier changed the energy meter to electronic one with blinking led. It pulses 1200 times per kWh. I read those pulses with phototransistor and amplify it with NPN transistor (74hc590 counts when input changes form low to high). Then I attach the output from 74hc590 to ds2408 and I get the value of the counter by reading sensed.BYTE. It works almost well but sometimes I get double counts. I' rather an amateur so I don't exactly know what's wrong. I suspect that I need to add some capacitor to smooth the change form low to high. Could someone with better knowledge than me look at the schematics and suggest a solution?
And another question about DS2408 behavior. Shouldn't RSTZ change it's state while performing read from sensed.BYTE?
I attach zipped eagle schematic -- p4trykx
<<attachment: counter.png>>
1wire_licznik fototranzystor.sch.tar.bz2
Description: application/bzip2
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