Arduino model railroad control. The tutorial also covers two remaining types of actuators.

Arduino model railroad control Arduino UNO. Feb 16, 2019 · This was the key to the whole system, and I'd never used one before. The Arduino board has its inputs looking for highs and lows from things like block occupancy detectors and switch point positions (normal/reverse). I have modified the code to include 1 - 19 engines, a display screen, direction, lights, 8 functions, emergency stop and auto current limit. This one uses the above Bachmann turnout (arduino servo control article coming soon), a arduino nano, two IRL520 MOSFETS, two resistors, and two diodes. Modification is not an option. The original program supports one decoder only. Model Railroad Grade Crossing Controller Jul 20, 2018 Jan 18, 2012 · I am currently working to expand the model railroad at my club. Details are below. The relay board technically requires 5V in inputs but in fact it switches nicely using the 3. Engineering, we're focused on simplifying how we control model trains and other electronic toys. See the image below: I started reading on some switching, but I can't find the right information for me. Jul 20, 2018 · Arduino and easy to use photo occupancy sensors simplify control of the grade crossing signals and sound effects on a model railroad. I’m here with DIY Jimmy. 4 days ago · This is working very well for my O scale layout. This is a directory page for information about, using and making Arduino projects that control and animate model railroad layers, scenery and dioramas. 3V inputs. There are many excellent Grade Crossing sketches out there, this board supports Jon Schmidt's sketch. For non modelrailroaders: the frog is where the straith and siding rail meet. As Arduino based – Level Crossing Control – by John Cornell. Using Arduinos for Model Railroading An Arduino is a very simple computer, actually it’s a family of different models for specific uses, with the typical one costing around US$30 (but you’ll spend more on things to add to it). IN3 -> D9. In this video I will demonstrate a process for routing control for your model railroad layout with Arduino. It seems to be very traditional DC control of power to the track using a motor driver. Also, for background, here's one of two servos: And here's one of the two signals. 3V. Regards, Wally Dec 16, 2013 · Hello Everyone. A Quick Word or Two about Olden Times Dec 26, 2022 · Just heard about Arduino and Railroad modelers using Arduino Uno for stepper motors on model rail road turntable stepper motors. It can also be used as a DCC booster or even as a high-current DC motor driver. This is the red board in the photo above, with a silver heatsink on it. The idea was to later adapt the sketch from 12 servo's to 24, once I had got it up and running to enable me to use one toggle switch to control one servo to operate/switch one set of points. I was also informed that this script is ESP32 For Model Railroaders, Diorama & Scenery Makers . Because of my limited knowledge of Arduino coding and unable to learn coding, I would be most grateful if someone could help me to develop this turnout control system. The system relies on ir sensors near the endpoints. This picture shows the board. We have a yard that has about 60 switches, each powered by a Tortoise stall motor. The problem he has is the electrical side of how a Jan 7, 2020 · Make your schedule. Ken K Reply 0 0 Connect the '+12-V' terminal of the motor driver module to the 'VIN' pin of the Arduino board. Some time ago a downloaded a sketch foor controlling 8 turnouts for a modelrailroad. And this page shows the wiring diagram and how to make it. This will keep your life easy, and these are usually the least expensive This Arduino project recreates the PIC version but also adds the capability to use a Bluetooth connection instead of the manual switches for the throttle, brake and direction control. The repo is a collection of resources for using the home automation tool ESPHome with a model railroad. The booms are controlled by small servo-motors. Nov 1, 2021 · Today we are making a fully automated model train setup using an arduino, a motor driver, and some infrared sensors!Download the Arduino Sketch Herehttps://g This e-book will show you how easy it is to get started with Arduino projects to control lights, sounds, trains, and accessories on your model railroad. At Loco. It works! I've been told that instead of using an analog input for the single button with a 1K pull down resistor, I should have used a digital input. My arduino literate friend said that making an interface to control speed (voltage) and direction (polarity) would be very easy for him so I could use my iPhone to control the little dc engines on my layout. Thanks for joining me. It is HO scale and uses the Digitrax loconet DCC system which sends pwm packets along the rails to decoders in the locomotives and switches. IN2 -> D11. I am a beginner. However, if needed, LocoNet can be cut from project and DCC packet generation with corresponding API can be used to implement other interfaces, like How to make an automatically controlled point to point model railroad control system for a DC powered layout or diorama. Feb 17, 2024 · They can also group those into zones for quick control. Copy it to a sdcard, insert into your Raspberry Pi , and you are pretty much set to go! Oct 6, 2021 · “Does anyone have a simple Arduino coding for a turntable? I’ve made a simple 3d printed turntable for the model railway I’m building for my grandson and want to control it from an Arduino. Oct 26, 2022 · Good evening! I would like to automate my model railroad with Arduino, and am looking into automatically switching the turnouts. libraries, Model Railroading with Arduino) for Atmel devices, moving to Arduino might be in order. I have been using Arduino Nanos to help me with my model railroad to change track switches, semaphores and stop lights for a while. The signal is red-yellow-green over red-yellow-green, modeled after the new CTC systems. All code and schematics included, as well as step-by-step instructions. This is possible thanks to an Arduino MKR 1010 WiFi board that communicates with Wagener’s custom app over the local network. org/Kato Sketch- https://github. The Arduino Uno, seen here, is one of several brands and types of Arduino microcontrollers available. Presently, on my layout, it controls servo turnouts for programable routes, changes track signal lights • An Arduino can connect to existing Model Railroad Electronics • Chubb SMC12 for using digital output to control Tortoise • DCCOD, TeamDigital DBD22, and NCE BD20 Detectors Oct 6, 2016 · 5 6 Parts required: 7 1 - arduino uno/mega or compatible 8 1 - arduino motor shield R3 9 2 - Led brite white (5mm) 10 2 - Ldr (A 9013 photo resistor 5mm) 11 2 - 10K resistor 12 2 - 220 Ohm resistor 13 1 - model train 14 15 Created 4 October 2016 16 by Kitemasters 17 18 This code is part of the public domain 19 */ 20 // -----CONSTANTS (won't Mar 11, 2024 · This board has discrete sections for LED control, turnout control, sensor input, and push-button control. This episode looks at using reed swith and magnet to automate the model train so that it automatically stops at the station. One of the most important aspects of the model train is its ability to move at varied speeds, unfortunately most model train remote controls do not allow you t… Apr 13, 2015 · Hi there, I am new to Arduino programming and have found a sketch that does what I need to switch various servo motors connected to various turnouts (sets of points) on my model railroad layout. There will be a BONUS video tomorr Dec 18, 2019 · Scenario: A train on track #1 is just about to leave the crossing while a train on track #2 has just triggered its leader section. 1. IN4 -> D8. I am going to use a red and green led for each signal (stop/go lights) so I was thinking 3 wires to a signal A GND, +green and +red. Mar 19, 2024 · Introducing the DCC (Digital Command Control) to Arduino Converter 2. Jan 28, 2011 · This was becoming a discussion on my thread about learning about SPI using the MCP23S17 Quote By logging the nudge(s) required, the next time that location is moved to, the nudges will occur automatically. Jun 27, 2017 · This is my BLOCK DETECTION 3 ASPECT LIGHT CONTROL program. This can handle up to 976 single Digital Command Control (DCC) is a great way to control multiple trains on a model railway layout. Why just keep it for the Duchies And for the digital railroad fans, DCC control is coming! And as far as the PCB goes, it's a bit hard (read expensive) to sent it around the world. Sep 16, 2022 · To slow the movement down, you need to move the servo positions by small steps, and do that in a timed way. Oct 29, 2015 · Model Railroad Turntable Control with a 6 wire stepper motor I'm new to Arduino, but have some experience programming in dBase and more in Paradox (about 12 years). My project is as follows: I want to be able to turn the turntable to 3 points (0° - 15° - 30°) via 3 pushbuttons, one for each position. Where can I learn how to writer a program. The reed switch is a switch which is activated when a suitable magnet comes into range. Signal A should turn red as the train moves in to block Aug 18, 2016 · I located the original thread when searching for a way for the Arduino to control numerous points/turnouts for a model railway layout. engineering with a description of your project and how you intend to use it. Model Train Speed Control (Arduino): Model trains are the center of one of the largest community of hobbyists on the internet. Any Arduino boards and your model railway set. Create massive train traffic on your own model railway! Nov 28, 2019 • 23075 views • 23 respects Consider donating the PCOS Challenge to help women everywhere with PCOShttps://pcoschallenge. Apr 13, 2015 · Btw, I'm not trying to push my code but he, I made a whole ecosystem for controlling servo's for model railroad. In order to drive it, the Arduino controls an A4988 chip. Arduino Intermediate Model Railroad Projects. Apr 27, 2023 · Arduino can be programmed to control your model railroad’s locomotives and other vehicles, sound effects, lighting systems, signals, etc. There are a bunch of projects available on running a train autonomously on a model railroad but after some time, a single train starts to get a bit boring. Resistors connect the LEDs to the Nano. There is one deficiency in the program: Scenario: 2 trains on the same track, traveling in the same direction, #2 following #1. 0 International For commercial use, please contact us at hey@loco. The project has named as URB (Universal Railway Bus), consists of three parts – a Android App, rules for applying and writing Arduino Sketches (Protocol) and any Arduino hardware. It’s a simple one-on one-off system. The 8 Circuit DPDT "Arduino Relay" provides 8 DPDT relays in the OMRON G5 format. The tutorial also covers two remaining types of actuators. . In the attached sketch I want to be able to set individually the close pos and open pos in degrees for each servo attached to the servoPins, but at this stage of my knowledge, I dont know how to do it Source code for Arduino PWM motor control; Model Railway Automation - part 4 - Train Detection with a Reed Switch. ” How To Use AI To Change Arduino Code- Click Here. Jul 2, 2017 · I’m currently planning a model train layout and need some advice before I start buying parts. ) Jun 17, 2019 · Arduino based – Level Crossing Control – by John Cornell. Mar 13, 2019 · Learn about object / block detection sensors, signaling, servo control, inter-Arduino communications, JMRI integration, speed measurement, turntable indexing and sound projects. The control board is simply made. I would love that to your knowledge would help me to establish this system in my N Scale Model Railroading DCC (Digital Command Control) / WCC (Wireless Command Control) decoders for model railways, LEGO and toys based on Arduino and ESP32S3 SOCs License: Attribution-NonCommercial 4. Part 4 — Arduino program . So here is the beginning of our project. I am new to Arduino products but would like to use them for a project i have. The input cable follows the common Arduino relay format of GND 1,2,3,4,5,6,7,8 +5. I have looked at the link. IN1 -> D12. Automatic Train Control. I will be doing my best to not have this based on one DCC Dec 11, 2024 · EDIT Since discovering that I2C was an easier and more appropriate method I have altered the title to reflect the new direction End of edit Hi all new here and relatively new to Arduino stuff. Connecting And Testing Lights Jan 17, 2021 · Hello. I have managed to get one servo with push button control working using the following sketch which I copied from the web but have been unable to get a second servo with push button control to work. It hosts Arduino Libraries and Sketches all in a single source code repository and downloadable file and is a place where people can contribute their own Model Railroad sketches and libraries. The width of the layout calls for a wireless controller. This program supports up to 9 decoders and provides a command controls Jul 18, 2023 · Will do. LocoNet messages are received and transmitted from physical LocoNet bus, WiFi, USB. by Tim Blythman Oct 19, 2021 · From an excellent tutorial by Geoff Bunza in the Model Railroad Hobbyist Magazine forum. Additional Resources: Arduino Model Railroad Animation Sep 16, 2022 · To slow the movement down, you need to move the servo positions by small steps, and do that in a timed way. This e-book will show you how easy it is to get started with Arduino projects to control lights, sounds, trains, and accessories on your model railroad. ESPHome is a great platform to base your automations/control systems on as it abstracts a lot of the authoring of code away from you, so you can focus on creating something that works for your use case, and know that the code running on your Jan 23, 2021 · Hi forum I will try the best I can in English, otherwise, the question is also in danish 🙂 I am a complete newbie to Arduino. Right now they move from 50 to 150 in a single step, so the servo moves at maximum speed. I have seen different examples of turntables controlled by Arduino, but not in the way I would like it to work. They communicate with each other and with classic C/MRI nodes via CMRInet. There will be a BONUS video tomorr Oct 11, 2015 · Download Model Railroading with Arduino for free. It also provides access to kits that make applying Arduino easy. I have a good strong 200 step 6 wire stepper from an old Epson dot matrix printer, and a timing belt that fits the 20 tooth cog. My question is this, that’s for moving one, but as it is in my case my model has 40 turnout motors and what I want is to change by servos, as could do. • An Arduino can connect to existing Model Railroad Electronics • Chubb SMC12 for using digital output to control Tortoise • DCCOD, TeamDigital DBD22, and NCE BD20 Detectors Automating model railroad layouts using Arduino microcontrollers is a great way of merging microcontrollers, programming and model railroading into one hobby. Oct 11, 2024 · I am very new to all this and am trying to learn extremely quickly. I would appreciate advice on coding and wiring to achieve this. The crossing signal needs to stay on, and will turn off when train #2 leaves the crossing. The setup consists of an Arduino Uno , along with a motor driver shield to vary the trains’s peed and direction, as well as flip turnouts to allow for different sections of Welcome Everybody! Be sure to subscribe! Today we are tackling something that I have wanted to do for awhile, an arduino based reversing loop!A quick note A conversation about Arduino Model Railroad: Micheal: Welcome, everybody. I presume that means that the user who wishes to run several locomotives has to implement some form of what model-railway-folks call cab-control. This system varies the speed of the train as it travels it route and allows you to set the time that the train remains at the endpoint before starting on the return journey. In this way, you can create single-track layouts with a reverse loop on each end to run trains without any pause or interru… Using an Arduino UnoR3 Mega2560 and two 32-bit servo controllers to control turnouts on a large N-scale model railroad layout. Get the trains running on time. Script currently in use: //Controls Two Turnouts And LED Signals Jan 19, 2017 · So I'm starting on the mission of controlling my turnouts with a servo motor controlled by an Arduino. Once setup, the user has complete control over the realistic lighting and that adds a whole new dimension to model railroading. Free Arduino Code Book – “Introduction To Arduino” -That You Really Ought To Have On Your Desk – Click Here . I have been trying to create a sketch to control a T-Gauge 1/450 scale model railway turntable with simple clockwise and anti clockwise buttons to control direction. It takes a control signal from the Arduino, and a completely separate power supply for the motor itself. One positive wire, with 1K resistor, 3 wires negative, one each for each color. The rails a powered to 12V DC. com/DIYandDigitalRR/Kato-Switch- Sep 1, 2019 · The Modern Railroad DC Control Wireless System for All Model Railways. Only now I would like to control the polarisation of the frog of the turnout. It is nothing more than an Arduino Nano mounted on some perf board. I intend to use a Hall Effect sensor to align it with the tracks. To be honest, most of the technologies used in model trains and RC toys are outdated. Arduino provides on its website a free download of their Integrated Development Environment (IDE) which is essentially an app that facilitates the programming. This concept is good, however I'd be inclined to have a "learn" button that allows the Arduono to remember Aug 4, 2013 · Hi, I am thinking about creating an arduino controlled signal system for my model railway. I would also like to connect my Arduino Mega through an interface module to the DIgitrax Loconet . For example, automatic block control avoids collisions and you control which train is driving manually or fully automatically according to a selected route. Ta in advance for your help. The first sets the servo at 90 degrees. This IDE uses the C++ program language. Some are simple so say a toggle switch will set LED's in a certain way Jul 30, 2018 · In this video. No need for level shifters. Any Arduino boards and Model Railroad Turnout Controller with Arduino: 6x Turnout (Switch) driver for servos based on Arduino Micro R3 to TTL-level digital input bits (6) to set position, with Acknowledge (6) digital TTL output back to Rocrail or other control SW. ENB -> D10 Dec 1, 2018 · Posted in Arduino Hacks Tagged arduino, dcc, digital command control, locomotive, model railroad, model train, railroad, train Post navigation ← 1,000 Watt Power Supply Tear Down And Repair Jul 30, 2018 · In this video. This opens up a wide world of control options for animations, sound and other options on a DCC equipped model Mar 19, 2018 · And I loved your video related to Arduino and control of turnout motors. I have a very old railroad system, so-called 'Trix Express'. I plan to use this to power the train, module and Jan 10, 2025 · iTrain offers an easy to use solution to control your model railroad with your computer(s), especially if you want to automate only parts of your layout and keep control of the rest yourself. Jun 17, 2024 · There are many ways to use an Arduino on a model railroad. I am extremely appreciative of any help that can be offered and thank you for reading on. I know that this is a fairly in-depth idea, so I’ll lay out the framework of what I’m trying to do first… The main thing I need help with is to figure out how to control the trains wirelessly (see #5). These nodes allow economic entry at as few as 16 lines and expand to as many as 144 lines per node with I2C peripherals (IOX16/32). What’s In This Page. I have an end to end model railway with 5 blocks and 4 signals. I have a couple other 20 tooth cogs, one to mount to the turntable drive shaft, and on to use as a Mar 6, 2017 · Model Railroader is the world's largest magazine on model trains and model railroad layouts. A train starts in terminus 1 block A, and passes signal A. Inspired by some of some of Geoff Bunza’s work, John Cornell used an Arduino Uno to control level crossing (grade-crossing) booms and LED flashers. Automated Train Reverse Loop Using Arduino: Making reverse loops can help in model train layouts to change the direction of trains, which cannot be done with turntables. I know nothing about Arduino and writing a program for a model railroad turn table. An Arduino microcontroller; An L293N motor driver module; A 'sensored' track; A 12-volt DC power source with a current capacity of at least 1A(1000mA) 6 male to female jumper wires (3 to connect the motor driver's signal inputs to the output pins of the Arduino board and the other 3 to connect the 'sensored' track's terminals to the Arduino board. I needed a means to throw multiple switches to se Dec 1, 2018 · Posted in Arduino Hacks Tagged arduino, dcc, digital command control, locomotive, model railroad, model train, railroad, train Post navigation ← 1,000 Watt Power Supply Tear Down And Repair Jan 2, 2019 · Model trains have been a staple of DIY hobbiysts for generations, and while wireless control options can be purchased, KushagraK7’s hack lets you use your phone instead. See full list on modelrail. I show you how I build a circuit for an Arduino Block Signal, and then I show you the programming for it. It can also be used to automate complex tasks such as reversing trains on a specific track section or automatically switching routes based on the time of day. The details of John’s project are described below. I am into model railways and would like to create a bluetooth control for one of my trains. The only trouble is I cannot work out how to program a computer interface to control it, I kind of want a image or the track plan as the background with buttons to change My son has written some sketches (programs) to control the servo for various Arduino model train projects. Model Railroad Grade Crossing Controller Jul 20, 2018 Dec 14, 2022 · Let’s Learn Together shows the most common actuators that are available to control a model railroad turnout: solenoid actuators; DC motors; servos; and how to interface the first ones with Arduino, using relays or MOSFETs. It features direct detection of photo transistors (no external resistors or comparators required) for the approach and island circuits for a single track. A Quick Word or Two about Olden Times Nov 15, 2017 · For those who want to control their DCC Model Railroad with their cell phones or tablets (pretty much any Android (Engine Driver) or IOS device), There is a Raspberry Pi image already built. Each locomotive Sep 1, 2023 · I have tried to find and or modify a sketch for my turnouts that uses 6 push buttons to operate 6 servos. This project adapted Michael Blank's program code for signal generation. The second is to control a single servo – it is very useful to determine the angles required to change the point from straight ahead to turn. The hardware part is fairly straightforward: 8 digital output pins are used on the arduino, connected to the 8 relay inputs. This a presently pretty successful project that controls 2 servos simultaneously to open or close model railroad track switches on a button push, and changes the colors of led signals as it does. Jan 24, 2019 · A basic model train layout containing a passing siding with a train running around and stopping in an automated sequence. The intended primary interface of the command station is LocoNet. com Jan 7, 2020 · Get the trains running on time. Get the source code for Detlef Kurpanek's Arduino-controlled model train signal system described in the December 2016 Model Railroader. Two servo operate simultaneously for the inside passenger station loop, and signals change as appropriate on the main loop. And a LED to Feb 16, 2019 · This was the key to the whole system, and I'd never used one before. I have always taken the easy way out, rather than trying to reinvent the wheel, and have stuck with whatever functions. Arduino Projects. Oct 17, 2021 · Hello This may have been covered elsewhere and if so I apologize. Nov 12, 2018 · Steve_Massikker: Video and link to sketch for an one train. I recommend that model railroaders stick to the 5 volt boards for general purpose layout applications because the vast majority of sensor and actuator technologies use 5 volt logic. It detecets the train entering and leaving a block of track and changes the lights accordingly Arduino Uno, Pro Mini, Nano, Trinket), shield and software support (eg. There are other Arduino based DC train control projects here. Please could you give me some guidance on what to and the feasibility of this project and what to buy. My goal is to make all of these switches to be able to be thrown using the loconet (right now, they are just Light Control Circuit Board. I have a large, complex layout, presently 20 ft long, with more than 40 turnouts (and will have possibly 50 to 60 once I am finished extending it around the 10'x17' room). What parts I will need and how to use simple push buttons as a setup button and how to set up various buttons for tail and head set points Jul 18, 2023 · Hi folks. VVVV You can get a kit here. I want to be able to use my DCC (Digitrax) network along with buttons on the layout near the turnouts to control from there as well. All signals will be green to start with and the trains will only run in one direction as I have two tracks with an identical setup going the other way. Arduino boards come in several designs that are broadly useful for model railroading. The input is compatible with Arduinos and other 5V devices. otenko. I would like to do all the switching with 1 Arduino Feb 17, 2020 · This is a model railroad signal control sketch. Jimmy, thanks so much for joining us. Here we present an Arduino-compatible Controller shield that can form the basis of a DCC system. This project is about Model Railroading with Arduinos. Connect the 'GND' pin of the motor driver module to the 'GND' pin of the Arduino board. The projects here can easily completed using circuit board kits. Jun 27, 2014 · Hello fellow arduinoites, I am building a lengthy n scale model rail layout. He’s with the Model Railroad Hobbyist Magazine and he’s also got his own YouTube channel, and we’re going to be talking about model railroading with Arduino. Feb 7, 2018 · Hi all, I am new here. These tiny, inexpensive, programmable computers can perform functions such as controlling signals, routing turnouts, and running animations. Feb 4, 2019 · Welcome Everybody! Be sure to Subscribe!We've built a DCC++ Base Station, now we're taking a look at how to build a DC Model Railroad controller with an Ard Nov 9, 2024 · The Arduino Due, the DigiX and pretty much all the ARM-based Arduino boards run at 3. Connect the 'OUT' pin of the sensor of station 'A' to the Arduino board's pin A0 and the remaining sensor's pin to the Arduino board's pin A1. 0: Build your own DCC decoders with Arduino, ESP32, and other MCUs. 12V DC 5A switching The original Arduino code by Michael Blank was for one engine, forward / reverse only with no function control, no keypad and no display. There will eventually be dozens of locomotives, so I must plan for that. It described how an Arduino Pro Mini (a low cost Arduino board) could be wired and programmed to respond to function keys on a DCC controller. This system uses electromagnetic coils to switch. It works great. Oct 6, 2016 · 5 6 Parts required: 7 1 - arduino uno/mega or compatible 8 1 - arduino motor shield R3 9 2 - Led brite white (5mm) 10 2 - Ldr (A 9013 photo resistor 5mm) 11 2 - 10K resistor 12 2 - 220 Ohm resistor 13 1 - model train 14 15 Created 4 October 2016 16 by Kitemasters 17 18 This code is part of the public domain 19 */ 20 // -----CONSTANTS (won't Oct 25, 2016 · We feature beginner and advanced help on all model railroading scales, including layout track plans, model railroad product reviews, model train news, and model railroad forums. Count would be kept in EPROM, so information would not be lost when powering down. Step 7: Place a Test Locomotive on the Tracks For testing purposes, place any locomotive or a powered car on the point 'A' of the layout from where the locomotive or the powered car will start. Make your schedule. Make the following connections between the motor driver and the Arduino board: Motor driver -> Arduino board. I thought to modify the existing sketch but i get an error: exit status 1 request for member 'digitalWrite' in Mar 6, 2017 · Model Railroader is the world's largest magazine on model trains and model railroad layouts. It's drawn from a lot of other things which have appeared in various YouTube videos and model train magazines. Jan 2, 2017 · Our goal is to make these turnouts controllable with an arduino, so that future projects using train detectors and DCC can allow more automation. I want to operate model railway turnouts with servos and push button control using Arduino Uno revision 3. Mar 1, 2017 · Inspired by some of some of Geoff Bunza’s work, John Cornell used an Arduino Uno to control level crossing (grade-crossing) booms and LED flashers. A simple Arduino model train control (DCC) system acts as a command station to control DCC decoders. While the design I present here is targeted for a 12 volt model railroad motor, it can easily be modified for a variety of other DC motor control applications. cpNodes are Arduino-based nodes for the Computer Model Railroad Interface (CMRI) system. All-in-one universal solution. PAGE UPDATE IN PROGRESS. We feature beginner and advanced help on all model railroading scales, including layout track plans, model railroad product reviews, model train news, and model railroad forums. ngvfnsi hxu rwgvt tnrqid vsgz xrn izrt ezfxj hrfjg iuiu