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  1. Hobbytronics

    Welder Simulation Circuit

    This is my welder circuit. It can be powered from your acc. output on your power pack and uses a single LED of any size and doesn't require anything else to operate.
  2. Hobbytronics

    My display at the train show.

    Try using 2 inch foam insulation board.
  3. Hobbytronics

    Weathering a Union Pacific Car Stage 1

    I just finished putting on the white wash to give it that faded look using acrylic white and isopropyl alcohol. The dark rust areas on the roof was burnt umber. I will be posting the 2nd stage when I get the 2nd layer of rust finished.
  4. Hobbytronics

    DC Scale Automatic Back-n-Forth (Trolley) Circuit

    This is my DC automatic back-n-forth circuit with timed ends (1-30 sec). Also works on DCC systems. It uses an isolation transformer which isolates track power from the electronics to eliminate any interference with the trains and device. I will be listing them on ebay soon.
  5. Hobbytronics

    My display at the train show.

    Thank you, if there is anything you need for your layout please let me know.
  6. Hobbytronics

    Pennsylvania GP35

    Ok, I also read that it helps in getting paint washes to stick better as well.
  7. Hobbytronics

    Pennsylvania GP35

    It was a lot of fun doing it and I learned a lot along the way. It may have turned out better if I had put dullcote on it first but I didn't have any.
  8. Hobbytronics

    Pennsylvania GP35

    My first (very poor) attempt at weathering.
  9. Hobbytronics

    My display at the train show.

    I only add lighting to the police and emergency vehicles. I also have traffic light and grade crossing circuits.
  10. Hobbytronics

    PWM Throttle circuit board

    It powers the trains (DC). It uses Pulse Width Modulation and has a very smooth speed transition from 0 -100%. PWM keeps the motors cooler and also gives a much smoother speed control over the engines in both directions.
  11. Hobbytronics

    AC B-n-F Detector (O Scale)

    Just finished putting together my AC Automatic Back-n-Forth (Trolley) Detection unit.
  12. Hobbytronics

    O Scale Vehicles

    I know the whelen bar, didnt know about the freedom name. I will have to look it up, thx.
  13. Hobbytronics

    O Scale Vehicles

    freedom bar?
  14. Hobbytronics

    Kato WP F3A loco not moving until 40% throttle. All my others move at 20%

    What type of throttle are ypu using, is it filtered DC, PWM or DCC?
  15. Hobbytronics

    O Scale Vehicles

    Getting ready to put lights in this ambulance. Just got this one, one of my fav. Just finished putting lights in this one.
  16. Hobbytronics

    PWM Throttle circuit board

    I just got my new pwm throttle boards.
  17. Hobbytronics

    Some humor

  18. Hobbytronics

    Kato WP F3A loco not moving until 40% throttle. All my others move at 20%

    Are your other engines kato as well?
  19. Hobbytronics

    My display at the train show.

    The trains on that display already came with there own lighting. I dont mess around to much with lighting, but i do have some constant lighting circuits for headlights and passenger car setups. There are many different size LED's and in most cases the manufacturer will have specs on the types...





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