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RailPro Specific Help & Discussion / Re: Broadway Limited Sharknose - 21 Pinout Questions.
« Last post by G8B4Life on August 06, 2024, 09:47:29 AM »Sorry...
I tried to upload them as JPG but the system said they were too big. GIF. Same... The only thing GIMP would convert them to that was remotely within the size limit and that the system allowed me to upload was WEBP
No need to apologise, you weren't to know. I don't know how a JPG was "too big" though, unless you had no compression at all; the maximum size per image here is quite generous.
Anyway after looking there are a couple of things.
1. You've put the front light (J1:Pin 2) on output 1 (White) which is standard but you've put the rear light (J1:Pin 3) on output 4 (not standard) instead of output 2 (yellow). There is nothing wrong with this but understand that if you use automatic change headlights on direction then this won't work, the front headlight will go out on changing to reverse but the rear light will not come on. In your case the front markers will change because you've got them hooked up to output 2.
2. You've had the Common hooked up to a wire labelled +3.3v. I hope you have not damaged whatever's at the end of that wire that's expecting 3.3v and not the near 15v that you gave it.
Just sitting on the track in the forwards direction do the front and rear headlights work? From what I can see that you've done they should as J1 appears to be designed for amplified outputs.
This leaves everything attached to J7. Going by the inclusion of +3.3v and ground on this jumper I'm lead to believe that these are designed for logic level (+5v) outputs (which is a thing with 21MTC decoders). RailPro obviously doesn't have any 5v outputs. If you follow the wires for pin's 1, 2, or 3 on J7 you should, if I'm correct, find them connected to some little transistors (which could even be on the bottom of the motherboard).
Without knowing what's on the end of the wires (just LED's, a circuit board with other components on it etc) it's hard to say any more. I guess trying to map the pins of the 21MTC connector to the pins in the jumpers is not a possibility?
- Tim