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Old 05-26-2017, 11:15 AM   #11
DonR
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Your original wiring diagram should work.

The major considerations are the voltage
available from your power source and the
resistor value to each LED. You could put
the resistor in the 'common' and need only one.

Start with NO LED connected. If your Tortoise
works, then add the resistors to the LEDs. Try
various resistance until you get desired brightness.

The amperage of your source power supply would
depend on the number of Tortoises you will have
on your layout drawing current. Keep in mind that
there is always a current to the Tortoises. Your
Tortoise manual should tell you the stall amperage.
Multiply that times number of Tortoises and you'll
have the required current needs. Each will draw
more current when operating but it's unlikely more
than one or two would be drawing motor power at
the same time.

Don
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Old 05-26-2017, 11:14 PM   #12
Mark R.
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You are trying to run a red and a green LED from a single 1000 ohm resistor. At 10 volts, I would think you have too much resistance for the two LEDs. Personally, I would use a resistor on each leg of each color (4 total) with a value in the 220 to 470 range. The red by nature will be brighter than the green, so you may want a higher value on the red to balance the brightness.

Mark.
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Old 05-27-2017, 12:37 PM   #13
thompsondl
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I built up a test circuit using 1K resistors. I see the difference in the brightness of the LEDs as Mark pointed out. I could maybe separate out the reds from the green and and use different size resistors for each. When I was at the electronis store buying resistors I bought a breadboard and a few different value resistors to play around with. I can experiment with different values until I get it right.



Here is a video of the switch machine and LEDs in action. Not the best video. Still learning how to shoot videos with my phone.

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Old 05-27-2017, 05:19 PM   #14
Lemonhawk
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You could also use bi color 2 lead LED's and just put it in series with one of the motor leads to the tort. That's the way I have my stall motor switch machines wired.
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Old 05-28-2017, 03:53 PM   #15
sachsr1
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Are you using DC or DCC? I just have a single 2 lead bi-color led soldered to one of the leads running to my tortoise.
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Old 06-01-2017, 07:37 AM   #16
cid
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I'm not real familiar with the tortoise, however I'm pretty sure that the internal switches indicate the actual position of the switch motor as opposed to the command signal. (Personally) I would like to see that short delay just to know that everything is normal.😁
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Old 06-01-2017, 09:43 AM   #17
gunrunnerjohn
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The contacts are indeed driven by the mechanical motion and should indicate the actual position of the switch (or at least the switch machine).
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Old 06-09-2017, 09:09 PM   #18
feldon30
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Just as another data point, I use LEDs directly off the tortoise and I do not use resistors. They might benefit from a capacitor though, as the LED dims as the switch moves.
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Old 06-10-2017, 09:27 PM   #19
Lemonhawk
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The dimming is due to the stall motor not being in stall condition where it draws more current. Consider it a "feature", it tells you when the points are moving!
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Old 06-11-2017, 10:27 AM   #20
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Yeah it's actually kinda cool.
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