Control panel lights and switches

PLMatthews88 Nov 4, 2018

  1. PLMatthews88

    PLMatthews88 New Member

    5
    1
    6
    Hi everyone -- I am finally getting back to working on my O27 layout and need some advice. I want to build a control panel with indicator LEDs and switches. What voltage and amperage rating should I shop for on LEDs and where is the best source? Do the switches need a certain voltage rating to work properly?
     
  2. trainman-ho

    trainman-ho TrainBoard Member

    267
    93
    13
    Switches are pretty standard as far as voltage is concerned. Led's on the other hand require specific voltage ranges, and Amperage.....both low. You should talk to someone in the electronics business, either repair, or sales for more precise info!!

    Jim
     
    PLMatthews88 likes this.
  3. Hardcoaler

    Hardcoaler TrainBoard Member

    2,896
    3,703
    61
    For a source, I recommend All Elecronics [ https://www.allelectronics.com/ ]. They have a lot of stuff, but not so much as to overwhelm. Prices are good and service is lightning quick.

    Jim is right, that you'll need dropping resistors to reduce current flow to your LEDs. From a 12 VDC power supply, I'm using 3000 Ohm resistors on my green and yellow LEDs and 6200 Ohm resistors on my red LEDs. Resistors are cheap, so you'll want to mess around with various values until you find what looks best to your eyes in your room light. I found the red light to be too penetrating, so lessened its intensity with a higher value resistor.
     
    Last edited: Nov 4, 2018
    PLMatthews88 likes this.
  4. PLMatthews88

    PLMatthews88 New Member

    5
    1
    6
    Thanks! Those are good tips.
     
    Hardcoaler likes this.
  5. traingeekboy

    traingeekboy TrainBoard Member

    5,330
    224
    69
    Why not go for the vintage controls? I even thought about using acme controls on my ho layout just because I like panels.
     
    Hardcoaler likes this.
  6. acptulsa

    acptulsa TrainBoard Member

    1,215
    415
    23
    You also need to know if you're using DC or AC. How vintage are your 027 trains?

    If you're running this from an AC transformer, I think you'll have to invert. I don't know of any AC LEDs, though I haven't actually looked. A diode may suffice.
     
    Hardcoaler likes this.

Share This Page