ProtoThrottle Receiver for ESU CabControl, JMRI WiFi Throttle, and Digitrax LNWI



This receiver connects the ProtoThrottle to an ESU CabControl system,  JMRI WiFi Throttle (a.k.a. WiThrottle or Engine Driver), or Digitrax LNWI.  It receives the wireless signal(s) from multiple ProtoThrottles and communicates them directly to the command station over a WiFi network.


5"(L) x 2"(W)


The complete design files for the ESU-BRIDGE and CKT-XBEE are available on GitHub.

User Manual

XBee Board Schematic

Bracket STL file on Thingiverse


Rev A609DD | Release Notes (09/25/2018)

Rev A6D94C | Release Notes (07/08/2018)

Rev A96E7C | Release Notes (06/30/2018)

Update Instructions

  • $99.00

  • 2 in stock

Related Products



The ProtoThrottle™ Realistic Control Stand Throttle mimics a standard EMD control stand including fu..


ProtoThrottle Receiver for NCE Cab Bus and Lenz XpressNet

ProtoThrottle Receiver for NCE Cab Bus and Lenz XpressNet

This receiver connects the ProtoThrottle to an NCE command station or Power Cab* using the Cab Bus p..


XBee to USB Interface

XBee to USB Interface

This board is an interface between an XBee module and an FT231XS USB UART.  Originally des..


ProtoThrottle (Black)

ProtoThrottle (Black)

The ProtoThrottle you all know and love, now with a black faceplate!Limited quantities available...


News & Application Notes

ProtoThrottle Auction for Cancer – It’s Done!

Auction3To every one who bid or helped us spread the word, we would like to say a big thanks. The two charity throttles brought in over $2300 for the Princess Margaret Cancer Foundation! We can’t say thanks enough!


ProtoThrottle Auction for Cancer

We will be auctioning off two ProtoThrottles and receivers with full proceeds donated to the Princess Margaret Cancer Centre in Toronto, Canada, in honor of Lionel Strang, host of A Modeler’s Life podcast. Lionel received treatment for Stage 4 melanoma and he raises funds each year to help other cancer patients cope with the emotional burden that cancer brings.


Thank You Spring Creek!

We are back home from our weekend in Deshler, NE, at the Spring Creek Model Trains train show and open house. A big thank you to Dave and Deb (and the whole Spring Creek crew) for hosting a wonderful event and allowing us to be part of it. If you are ever in the Deshler area, be sure to stop in and take a look around. You won’t be disappointed!

Train Show This Weekend!

We will be at the Spring Creek Model Trains train show this coming weekend, June 29th and 30th, in Deshler, NE. Please stop by and say hi! We will have the ProtoThrottle available to try, along with our new line of Grain Belt Models culvert pipes and grain bins.  We hope to see you there!

ProtoThrottle in Action: Cheyenne, WY

Spring Creek Model Trains will be at the Sherman Hill Model Railroad Show in Cheyenne, WY, this coming weekend, May 18-19, 2019. Stop by their booth for a chance to try out the 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.

Readers Choice Winner!

We are pleased to announce that the ProtoThrottle is Model Railroader’s 2019 Readers Choice Award Winner for the “Most Innovative Model Railroad Product”!  Thank you to all who voted!

Dead Rail Interface for the ProtoThrottle

We’ve been asked a few times if there would ever be a dead rail interface for the ProtoThrottle.  While this is not something we would likely embark on ourselves (Nathan and I are both N-scale modelers), the open source nature of the design has allowed others to do so.  Over the last few months, Martin Sant has been busy building a dead rail interface for the ProtoThrottle to run his G-scale trains.  Check out the progress on Martin’s blog.

Scott Thornton Live!

For those who missed the live stream, you can still watch Scott Thornton talk all things ProtoThrottle with the AML (A Modeler’s Life) crew over on YouTube:

We’re at Springfield!

If you’re at the Amherst Railway Society’s show in Springfield, MA, this weekend, be sure to stop by and see us at the Spring Creek Model Trains booth.

We’re happy to partner with Scale Trains on their amazing new Dash 9-44CW models to bring you the most realistic control experience on one of the most realistic models available. Thanks to the folks at Scale Trains, we’ve had a demo locomotive for a few days to figure out how to make the new ESU LokSound v5 decoder in the unit operate well with the ProtoThrottle. If you’ve just bought a new Dash 9, stop by for all the tips and tricks to run the best with the most realistic throttle on the market, or see how well they run together on our demonstration layout.

Even if you’re not in the market for a Dash 9 or a throttle, if you want a good story when you stop by, ask Michael about his airline adventures yesterday. It’s guaranteed to make you glad you drove to Springfield.

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.



Write a review

Note: HTML is not translated!
    Bad           Good