• ProtoThrottle




The ProtoThrottle™ Realistic Control Stand Throttle mimics a standard EMD control stand including full detent throttle and reverser handles, a spring-loaded horn handle, a push-on/push-off bell button, and fully programmable front and rear headlights with a setting for ditch lights. In addition, the ProtoThrottle comes with a robust faceplate machined from aluminum, including prototype bezels, and anodized to give the look and feel of a real control stand.

"That’s one impressive piece of hardware."Tony Koester

"I'm having more fun with trains now than I have in years."Pete Mulvany

"Overall, this is truly a game changer for me... that’s an investment worth making."James McNab

"...the only description I can think of is WOW!!!! What a cool addition to any layout, it was so easy to use and realistic to operate you guys have hit a real home-run here."Lionel Strang

The ProtoThrottle is being developed in tandem with Scott Thornton of Designgrid LLC. Scott is responsible for the throttle’s aesthetics, faceplate mechanical production, and marketing.

Frequently Asked Questions


  • Fully wireless throttle
  • Eight detent throttle handle
  • Reverser handle with centered position
  • Brake handle
  • Spring-loaded horn handle
  • Push-on/push-off bell button
  • Front and rear headlight knobs with dim and ditch light settings
  • Auxiliary buttons that can be assigned to any DCC function
  • Works with any standard DCC decoder
  • Interfaces to any* DCC system
  • Highly configurable to suit your operating style
  • Now shipping with improved firmware (v1.1)
  • Also available with a black faceplate (limited quantities available)

*Note: Requires purchase of a separate receiver specific to your DCC system.

Due to regulatory requirements, the ProtoThrottle can only be shipped to the US, Canada, Australia and New Zealand.  Orders placed with a shipping address to any other country will be cancelled and refunded.


Click here for a video Product Review by Model Railroader Magazine.

Another excellent review by Shane Mason:

Watch the ProtoThrottle in action on professional locomotive engineer Tim Garland’s Seaboard Central...

Watch the ProtoThrottle in action during an operating session on Thomas Klimoski's Georgia Northeastern Model Railroad...

Two short videos produced by Joe Atkinson explaining how the ProtoThrottle has made his layout operations more realistic...


Approximate Dimensions: 7.6"(L) x 3.2"(W) x 3.0"(H)

Powered by 2x AA batteries (not included).


The complete gEDA design files are available on GitHub.

User Manual | Menu Map (Legal Size)

Previous User Manuals: v1.0

Schematic: Main | LCD Board


v1.1.0 (Rev A73AE5) | Release Notes (10/21/2018)

v1.0.0 (Rev A4A983) | Release Notes (06/29/2018)

Update Instructions
  • $482.00

  • 6 in stock

Available Options

Don't forget to also order a receiver for your DCC system!

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News & Application Notes

ProtoThrottle in Action: West Springfield, MA

We will be at the Amherst Railway Society Railroad Hobby Show this coming weekend, January 26-27, 2019. Stop by the Spring Creek Model Train booth in the Stroh Building for a chance to try out the throttle, meet the developers, and yes, even buy your very own ProtoThrottle, Realistic Control Stand Throttle!

Spring Creek will be on the road throughout the year, providing you an opportunity to try the ProtoThrottle for yourself. For the latest show schedule, please check the Spring Creek Model Trains calendar.

Setting up Auxiliary Lighting Functions on the ProtoThrottle

In this video, we explore how to set up the ProtoThrottle to control various auxiliary lighting functions on a locomotive. It’s based on a ScaleTrains.com SD40-2 (thank you ScaleTrains!) with lighted number boards, class lights, and a rotary beacon, but the techniques apply equally well to any DCC equipped locomotive. Keep an eye out for a special treat with the class lights…


Fast Clocks and the ProtoThrottle

Have you noticed the –:– display on the main screen of the ProtoThrottle and were wondering what that was? Or, are you one of the lucky ones, and actually see a time displayed on the second line? Those characters on the display are for displaying a fast time from one of several fast clock sources. The ProtoThrottle simply acts as a repeater display for the time, from whatever source.


ProtoThrottle Firmware Update (v1.1)

Firmware v1.1 for the ProtoThrottle has been officially released:


Full release notes can be found at the link above, but here are the highlights:

  • Manual power down with a long press of the SELECT button
  • AUX button indicator on the main display
  • Menu lock to limit menu options for operators
  • User interface enhancements (hide options that don’t apply)
  • Programmable battery thresholds
  • DIAGS screen to see active (and inactive) DCC functions

The next production run of throttles (available soon!) will ship with this new firmware installed.


What Are All Those Blinky Lights?

You may have noticed all those blinky lights on the ProtoThrottle and its receivers. Yes, Nathan and I are fans of LEDs on the stuff we build. There is a small coolness factor, but more importantly, for products going out into the wild, beyond our loving care (and our ability to see and touch them), these lights convey important information that helps the user – and us – debug problems when they arise. Below is a guide to what all those lights do and what they mean. To use and enjoy the ProtoThrottle, you certainly aren’t expected to know and remember all the information below. But things do sometimes go wrong, and we wanted to provide a reference guide to help in figuring out what happened. This should also help you understand why one of our first questions, when someone contacts us with a problem, usually involves us asking about those pesky little blinking LEDs…


How Do I Choose a ProtoThrottle Braking Mode?

There are two main braking modes in the ProtoThrottle. The default mode is a basic on/off (VAR BRK = OFF) brake. When you move the brake handle right, past the brake threshold (approximately mid-way), the assigned brake function is activated in the locomotive decoder. When you cross that threshold moving the brake handle left, the assigned function is deactivated. Simple and straightforward. This is equivalent to what you get with a standard function button on a traditional throttle.


2018 STL RPM Meet

We will be attending the St. Louis RPM Meet this Friday and Saturday (July 20-21, 2018).  Please stop by and say hello.  New for this year…  the ProtoThrottle!  No more waiting as it will finally be available for regular sales.  Following the RPM, we will make it available on our website, along with our two exclusive dealers: Caboose in Denver, CO, and Spring Creek Model Trains in Deshler, NE.

If you’re in the St. Louis area this weekend, stop by and see all the wonderful models and soak in the knowledge at this year’s meet.  Hope to see you there!

ProtoThrottle Milestone

Today, we just finished shipping all the ProtoThrottle pre-orders.  Thank you to all who ordered and we look forward to seeing where this goes in the future.  For those who missed pre-orders, we will be at the St. Louis RPM Meet this coming week, with throttles for sale, and then they will be available on the website shortly thereafter.

Also, Caboose Hobbies in Denver, CO, and Spring Creek Model Trains in Deshler, NE, will be carrying the throttle.  Be sure to stop by, or say hello when you see them at a show.


How do I Recalibrate the Horn and Brake Handles?

The handles on the ProtoThrottle come pre-calibrated and should not require any additional adjustments.  However, there may be times when you want to adjust the point at which the horn or on/off brake activates.  The threshold menu is for doing just that.  It allows you to calibrate the horn and brake levers to suit your preferences, or to adjust for mechanical tolerances when assembling the throttles, as no two will be exactly alike.

As the manual notes, normally you will not need to do this.  But, the option is available if somebody wants to customize the throttle, or in the rare case needs to disassemble the throttle or adjust for drift over time.

Here’s the basic process for calibrating the throttle…


ProtoThrottle Update (June 17, 2018)

The final face plates, with lettering engraved, arrived Friday and all the assembled ProtoThrottle circuit boards came in last week.  Nathan and I also spent a fun weekend building all the receiver boards we need (and more).  With that, everything is in place to begin final assembly of the throttles, testing, packaging, and yes, eventually, shipping!



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