Lionel CC2 chuff question

The chuff switch is a mechanical switch on an axle, so it's the same as TMCC engines.  You can wire it directly to the CC chuff input, job done. You can wire it to the motor through a diode, that's how some of the k-line stuff did it.

Of course, you could go deluxe and get more functionality using the Super-Chuffer II, it provides the chuffing, smoke at idle, Rule-17 headlight, and automatic cab light control.  This restores a bunch of the features you had before the electronics was removed.

What did you use to get the swinging bell working?

@gunrunnerjohn posted:

The chuff switch is a mechanical switch on an axle, so it's the same as TMCC engines.  You can wire it directly to the CC chuff input, job done. You can wire it to the motor through a diode, that's how some of the k-line stuff did it.

Of course, you could go deluxe and get more functionality using the Super-Chuffer II, it provides the chuffing, smoke at idle, Rule-17 headlight, and automatic cab light control.  This restores a bunch of the features you had before the electronics was removed.

What did you use to get the swinging bell working?

Ok, so cathode toward the motor right?

The bell driver board, has 5vdc, IR tether and bell control, it has a serial input, so I just connected it to serial. Powered by track AC.

I have a arduino nano I’m using for the firebox flicker and the cab light using a voltage divider off the motor leads. I may use that voltage divider input to also switch a ground to the fan motor when voltage is zero for fan on while no motion. I haven’t figured it out, maybe a FET to do the control?

@Pu239 posted:

Ok, so cathode toward the motor right?

The bell driver board, has 5vdc, IR tether and bell control, it has a serial input, so I just connected it to serial. Powered by track AC.

I have a arduino nano I’m using for the firebox flicker and the cab light using a voltage divider off the motor leads. I may use that voltage divider input to also switch a ground to the fan motor when voltage is zero for fan on while no motion. I haven’t figured it out, maybe a FET to do the control?

I'm impressed the bell board works with the TMCC serial data, I thought it only responded to 9-bit Legacy data.

I use a pair of FET's for the smoke motor on the Super-Chuffer, the second one stops the motor after the chuff to give better definition.  I use PWM to the fan to change the speed for idle smoke to a low speed fan.

@gunrunnerjohn posted:

I'm impressed the bell board works with the TMCC serial data, I thought it only responded to 9-bit Legacy data.

I use a pair of FET's for the smoke motor on the Super-Chuffer, the second one stops the motor after the chuff to give better definition.  I use PWM to the fan to change the speed for idle smoke to a low speed fan.

Thanks! Yea the RS5.5 was a pain since it didn’t come with the board. So I installed a R2LC in the tender to control the ERR small steam ( most correct whistle of the Lionel whistle), the rear coupler and backup light. Drilled a hole in the coal load for the antenna, and used some #4 coal to rebuild the load on top of the antenna. I was thinking of reusing the whistle smoke and blowdown board on a 3rd rail big boy I’m fixing up. I just don’t know if the tmcc serial blowdown signal will trigger the board?

That will be an interesting experiment, I have no idea if the blowdown for TMCC will be recognized.  I guess you'll know soon!

@gunrunnerjohn posted:

That will be an interesting experiment, I have no idea if the blowdown for TMCC will be recognized.  I guess you'll know soon!

I may try to hook up the RCDR that came with it and test the smoke board out. I couldn’t get the RCDR to work as far as programming. It just had the head light on all the time and didn’t blink when I tried to program it. It has the two Fets in a TO-92 case, one is burnt out, was going to clip it off to test. Prob a coil coupler FET I think. Anyway, is the wiring standard on these? The pdf on this site shows different pin outs. Thanks

The triacs are easily replaced, same ones that are on the R2LC & R4LC MAC97A6 or MAC97A8.

Here's the pinout for the RCDR in early Legacy.  The OPT pins have various functions, couplers, motor driver PWM, etc.

@gunrunnerjohn posted:

The triacs are easily replaced, same ones that are on the R2LC & R4LC MAC97A6 or MAC97A8.

Here's the pinout for the RCDR in early Legacy.  The OPT pins have various functions, couplers, motor driver PWM, etc.

Thank you! I assume Vpp is program, but what is DAT and CIK?

thanks

Well, they're LED connections on most of these.  ERR used the same hardware platform for dummy locomotive use, and here's their wiring diagram.

<click on graphic to enlarge>

I have a few of the Legacy RCDR's, and some have couplers, and some have the PWM motor control outputs.  Also some are mystery functions, and I'm not sure what the two optional pins do.

To further confuse the landscape, there are also later versions of the RCDR with totally different pinouts.  I have some of those as well, but I haven't made a test harness to sort out the functions.

This is from Bruk's excellent Legacy documentation.

Legacy Bruk BEMC & RCDR Rev.2019.pdf

Legacy Bruk RCMC & RSLITE Rev.2019.pdf

These are must-have references for anyone tinkering with later Legacy models.  There are a couple of errors in the documentation, but most is spot-on.  As it turns out, the RCDR pinout that I posted first that has the two OPT outputs, he has incorrectly labeled as 3rd Rail for one of those, that is incorrect.  I have a test cable for that version, and I know it's not track power.