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  1. Replies
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    A bit more explanation, because this is...

    A bit more explanation, because this is complicated. Unfortunately.

    Switches are measured as if each leg is straight. The frog #4 indicates how fast they diverge. For every #N units down the...
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    I think there may be multiple things going on...

    I think there may be multiple things going on here.

    First, a listing on eBay does not mean it's selling for that price. People could list it at $10,000,000 dollars. If you want to know what...
  3. Thread: DC to dcc

    by bicknell
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    164

    Have you opened them? I ask because in the...

    Have you opened them?

    I ask because in the 1970's some N scale locomotives still featured rubber band drive. And I suppose you could replace the rubber bands and put in a decoder, but frankly, I...
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    Titebond III wood glue. Why? It's "waterproof"...

    Titebond III wood glue. Why? It's "waterproof" when dry. This means when I go to ballast with a diluted white-glue mix there's no chance it causes the track to move as it softens the glue.

    It's...
  5. I would give anything more DeLux Innovations...

    I would give anything more DeLux Innovations ramps. Very low, which I really like. The N-Trak spacing on the edge gets a lot of use, since that's what I do. I have about 5, at least one of which...
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    They look fairly prototypical right as you have...

    They look fairly prototypical right as you have them. We often don't look at real bridges up close, but there are gaps where they come together and they are often larger than you think. The real...
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    The short answer is no. The long answer may or...

    The short answer is no.

    The long answer may or may not be interesting to you.

    In a DC locomotive, the wires from the wheel pickups go directly to the motor. Super simple. So the entire 0-12v...
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    Yes, that is a decoder. The manual for it is:...

    Yes, that is a decoder. The manual for it is: http://download.atlasrr.com/pdf/LE063XF%20Manual_Atlas.pdf

    When DCC first came out, DCC devices would not do anything on DC track. So a lot of folks...
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    Alright, I've been working on Rev 2.0. The...

    Alright, I've been working on Rev 2.0. The circuit hasn't really changed, but the components have:

    http://www.ufp.org/~bicknell/nscale/snpp-20200329/schematic1.png

    This switches to an NCP718...
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    Alright, some testing completed. I managed to...

    Alright, some testing completed.

    I managed to mechanically, that is pry up with an xacto, the diodes on another board. I then tried feeding 10v DC into the regulator and got --- nothing. I'm...
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    Well, I've figured out one thing that will make...

    Well, I've figured out one thing that will make my life a lot less error prone, and open up some new services to me.

    I figured out how to make KiCad generate the pick-and-place file and upload it...
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    Well, here's where we are at: Board #1:...

    Well, here's where we are at:

    Board #1: Factory smoke came out because I had the diodes backwards.

    Board #2: I soldered on jumpers to try and feed it with pure DC past the diodes, but left the...
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    Well now, there's a bit of a bummer here. Due...

    Well now, there's a bit of a bummer here.

    Due to my confusion with their user interface the 4 diodes are installed backwards. This caused the first board to release the factory installed smoke.
    ...
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    Well well well, look what the UPS man brought me....

    Well well well, look what the UPS man brought me. Very cool.

    Flat car for scale:

    http://www.ufp.org/~bicknell/nscale/snpp-20200322/IMG_7320.jpg

    40 foot box car for scale:
    ...
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    Today they said: Oh yeah - your PCB:NG order...

    Today they said:

    Oh yeah - your PCB:NG order has shipped: <tracking number redacted>. Electronics on their way.
    If you have any issues, or questions, please get in touch with us as soon as...
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    Interesting. I got an e-mail from them today. ...

    Interesting. I got an e-mail from them today. They were confused by the super-capacitor part, because I had indicated it was polarized, but the data sheet they found did not indicate polarization. ...
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    Today I got this in e-mail from them: "The...

    Today I got this in e-mail from them:

    "The status of this order has changed to: In manufacturing. Your boards are being assembled as we speak. Almost there!"

    I think the boards have been made,...
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    Been a while since I updated. My board still...

    Been a while since I updated. My board still shows "In fabrication" on the web site, well past their normal delivery times. No communication from them either about delays. Under normal...
  19. Thread: Max for DC?

    by bicknell
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    193

    There's two reasons to need feeders: 1 Provide...

    There's two reasons to need feeders:

    1 Provide resilience against rail joiners not conducting. You can combat this by soldering more of them of course to a degree. This is basically reducing the...
  20. Well, I point to the LokPilot in that case. :D

    Well, I point to the LokPilot in that case. :D
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    I'll add in my own $0.02 here. Hand-Laid...

    I'll add in my own $0.02 here.

    Hand-Laid pro's:

    More realistic looks.
    Can get turnouts much closer together than with commercial offerings.
    Can make any geometry, either to fit more...
  22. FWIW, a small LED (0402 imperial, which is...

    FWIW, a small LED (0402 imperial, which is 1mmx0.6mm metric) and resistor (can be had in the same size, or 0201, half the size, or 01005, one fourth the size!), and a reverse protection diode (0402...
  23. yeah, totally get where you're coming from. I'm...

    yeah, totally get where you're coming from. I'm not quite in the same boat, I've got enough cars and don't feel the draw of too many more, but there's still a cost/time/reward calculation.
    ...
  24. I thought I would share a little more. I was...

    I thought I would share a little more. I was playing around with available regulator options trying to see how small I could get the "power supply" portion of the board. My research took me to a...
  25. Interesting, I was not aware of that LokPilot. I...

    Interesting, I was not aware of that LokPilot. I am slowly figuring out how the manufactures make these things, but there still are some mysteries to me. For instance I'm still trying to figure out...
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