It works fine with the usb plugged in although I took it in the van with me and it's not getting any data. I'm not powering them (usb and 12v) at the same time, just the data wires.
Why do I get continuity from the injector data RJ11 wire to D1? That's crazy talk! . D1 should be getting the 12v+ If you reverse the rj11 in the diagram it all make sense. And I'm getting continuity to the ground from the RJ11 to what should be the diode and resistor for the injector
I think either the board was etched wrong or the RJ11 wires are assigned wrong in the instructions. (or I'm going nuts ) If you look at the male RJ11 symbol on the diagram, the 12v+ is on #3 not #2. On the guino it ends up correct to the drawing but the board sends the wires to the wrong components. 12V+ goes to the injector circuit, 12V- goes to the VSS, VSS goes to the 12V ground etc.
Do I risk reversing them myself?
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