/diy/ - Do It Yourself

>>1158795
the tx line is run off power scavenged from the photovoltaic coupler and the rx line. it's limited to ~40uA average sourced when there's no rx activity but should be able to drive the line capacitance anyway as the slow response time of the photovoltaic limits it to <10kbaud. for all that idiocy i get one less pin on the header.