Hi there
Rob van der Putten wrote: > This will probably work; > > +-----> DATA > | > | > | / c > +-----+ b |/ > TXD >-----+ 4k7 +--*-----*---| BC547B > +-----+ | | |\ > | | | \| e > | | -| > +++ --+-- | > 47 kΩ | | /|\ | > | | --+-- | > +++ | 1N | > | | 4148 | > | | | > | | | > GND >--------------*-----*-------*-----> GND If you want to build four, just multiply the resistor values by four (it will probably still work with 10 x these values). > You have to write software to drive it. This is for a parallel port; http://www.captain.at/rtai-dcf77-simulator.php Regards, Rob -- There are 707 days until Central Registry IPv4 address exhaustion. _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
