Track and electrical/DCC

Keller Engineering OnBoard system

Anyone out there still using the Keller onboard system from the 80s and early 90s? Club I belong to still has a working system on part of there O scale layout. Not a bad system for its day.. Always keeping an eye out for more mixers keypads and throttles.

 

Paul S

Isolating the motor

I'm new to installing DCC. I've frequently seen the term/instruction to "isolate the motor". So, despite my best efforts to find a practical definition or schematic I'm resorting to the "there is no dumb question" routine. Would anyone out there take pity on me and help me understand what "isolate the motor" means and how to do it?

Thanks

Stumped in Salem OR 

Photo Bud's picture

Unable to Read Decoder

After trashing my Raspberry Pi by attempting to upgrade to "Buster", I had to start over from scratch with a new system load. Since I lost my JMRI loco info, I had to re-read all my decoders to reestablish the roster. I have 13 engines with self added decoders and all but one was easily re-read and the roster recreated.

kh25's picture

NMRA standards gauge question

When checking the track gauge are the rails suppose to fit snuggly between the nubs or should there bid wiggle room?

tcrofton's picture

Templot curved turnouts

I discovered a British track template making program for curved turnouts named Templot.

templot.com

it is absolutely amazing but extremely hard to get started due to the lack of beginners instructions.

After a few days of trial and error and joining the forum and watching videos I learned enough to manually create a curved version of my Anyrail plan 

you can make a long curved track and then drop a turnout into it that maintains the same curve

Adding a capacitor to a Walthers light board

I have a Walthers HO passenger dome car that came with a nice LED light board. The big problem is that it flickers terribly. I would like to add a capacitor to the circuit. The image below is the board that goes on the short end of the dome car. The red & black wires on the right go to the larger light board at the other end of the car. The gray pads on the left corners are the rail power contacts. Some of the traces can been seen on this side of the board. There is nothing visible on the other side. I am assuming some traces are buried in the board.

van15f's picture

Help needed making your own booster connection cable for Roco Z21

Hi Guys and ladies

I need some help with the wiring of a booster cable for a Roco z21. I need to know if the two RJ connectors are wired as a cross over, or how the wiring goes from the left to the right RJ connector. I only need about a 12 inch cable and most of the ones for sale are 6 feet or longer. 

Thanks 

Henry van Wyk 

Nelsonb111563's picture

BLI Trackmobile with DIY keep alive

Someone asked here a while back about putting a "keep alive" circuit in a BLI trackmobile.  Well that got me thinking on how.

Anyways here are a few photos and a short video.

kirkifer's picture

Boards to mount loose JST connector

Gang, 

I got a bunch of loose JST connectors off of eBay. The pins are too close together to fit on a standard breadboard or whatever you call the circuit board I use to mount resistors for lighting. Where can I find stock boards that will allow mounting of JST connectors?

Basically, I want to make my own wire connection boards similar to those found inside a Bachmann steam loco. See the second picture. 

 

Switch machines - for DCC control

I haven't bought a switch machine in many years. My previous layout had a dozen or so Kemtron X-250s, and every switch I've had in the intervening decades has been thrown with a ground throw. The next layouts will both be controlled via DCC, meaning both locos and switches. Pretty much all I've seen recently are Circuitron Tortioses. They seem to have a reputation for reliability and ease of installation, so they seem to be the default choice. Are there other choices, particularly if they might be better suited to DCC control?


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