BltIncrease Endpoint Setting Up To 175%
BltDecrease Endpoint Setting Down To 75%
BltSlow Down Retractable Landing Gear Servos
BltSlow Down Flap Deployment
BltMix Fast Ailerons With Slow Flaps
BltNeutral Offset Correction
BltLoss Of Signal Default Position Support
BltReverse Servo Inputs and/or Outputs
BltGain Mixing Allows Variable Control Sensitivity
BltSupports + and - Gain Settings
BltUSB Programmability
BltDownload and Share Configurations
BltTry Before You Buy Through Simulation
BltSatisfaction Guaranteed
BltNo DRC Hardware Required For Simulation
BltASCII Readable Configuration Files
BltUser Comment Support For Configuration Files
BltVariable Telemetry Rate
BltInput and Output Telemetry on Both Channels
Blt50 to 300Hz Input and Output Pulse Rate
BltHandles Overlapping Input and Output Pulses
BltWorks With All Gyros

Your choice of JR or Futaba J-Lead style connectors.

Try It Before You Buy It:
The SM2 Control Panel Application is fully functional with or without the SM2 or DRC-Link hardware. The application supports a simulation mode that allows the user to set all of the SM2 configurations and watch virtual servos move in response to simulated transmitter commands. See the SM2 Application Download link below to get your free, fully functional copy of the SM2 Control Panel.

SM2 Operators Manual:
You can see the on-line SM2 Operator's Manual here, or by clicking the button-link below for detailed descriptions of how to connect and operate the SM2. The version of this manual that runs on your local computer is part of the free SM2 Control Panel download available below as part of the SM2 Control Panel Application.

Configuration Files:
There are several example configuration files for the SM2 that you can download and test with the SM2 simulator. These configuration files are shown below with a description of what each one does. You can download and modify any of these configurations and quickly program your SM2 without having to first familiarize yourself with all of the SM2 features.
If you have a unique configuration that you would like to share, you can email it to for possible entry into this table for others to use.

Download Instructions for Configuration Files:
A web page will open when you click on a configuration file link showing the text contents of the configuration file. Configuration files open this way for security reasons and you must save them manually. It's as easy to save them from the web page as it is from other download dialogs, and it is a little safer. After you click on a configuration link and your browser is redirected to the text file contents, use the "Save As..." option from your browser "File" menu to save the configuration file anywhere you like on your computer. These configuration files can be loaded into the SM2 Control Panel Application as described in the SM2 Operator's Manual.

SM2 Configuration File Description
Download Link
Mix Ailerons and Flaps
Aileron and flap channels are mixed to create flaperons. There is a 20% overlap of aileron control when flaps are fully deployed
Mix Ailerons and Delayed Flaps
Same features as above, except the flaperons are programmed with a 3-second delay. Ailerons always operate at full speed, but flaps slowly lower and raise. This prevents the sudden jump often seen when flaps are deployed from a switch on the transmitter.
Elevon or V-Tail 50% Mixing
Controls elevons with 50% mixing on each channel. Servo positions will never saturate.
Elevon or V-Tail 100% Mixing
Controls elevons with 100% mixing. Servo positions will saturate if elevator and aileron channels are both moved to positions greater than 50% at the same time.
Factory Default Settings
Factory default settings. This is the same configuration that the SM2 is shipped with from the factory.
Steering Control for Rock Crawler Trucks
Crab control for monster trucks. This example shows a use for gain control. Using a truck with 4-wheel steering, this configuration uses a steering input and a second "crab" channel to control the amplitude and direction of the rear wheel steering. If the crab channel is neutral, then the back wheels do not steer at all. If the crab channel is all the way in one direction, then the rear wheels will turn inversely proportional to the front causing the truck to execute very tight turns. When the crab channel is in the other position the rear wheels will turn directly proportional to the front allowing the truck to crab.
Twin Engine Motor Control
Control two Electronic Motor Speed Controllers ("ESC") where the throttle controls the speed on both motors, and the rudder control causes one motor to speed up while the other motor slows down. The throttle channel controls 75% of motor power while the rudder controls 25%.
This configuration can be used for coaxial helicopters, twin engine fixed wing aircraft, and Vertical Takeoff and Landing ("VTOL") vehicles.
Modifying Configuration Files:
Make sure you are not using a rich-text editor like MS Word if you want to manually make changes in a configuration file as they can insert special characters that you might not see, such as control characters to define bold type or other highlighting. Use a simple text editor like Notepad.exe to make changes, and do not make any changes to the text below the line that says "Desert RC Standard Mixer Control Panel" unless you are confident that you know what you are doing as that line is created by the SM2 Control Panel Application.

Download the SM2 Control Panel Application:
The SM2 Control Panel Application is available as a free download by clicking on the link button below. Unzip all 3 files into a folder on your computer. There is no other installation necessary, just double-click the SM2.exe application file. You do not need any other hardware to use the application in simulation mode. Refer to the SM2 Operators Manual for further operational details. You can view the manual on line, or double-click the "SM2_Manual.chm" file that you just downloaded to view it on your local computer.

Run the SM2 Control Panel Application:
We hope you will find that the SM2 Control Panel is intuitive and easy to use. Refer to the help file or contact us if you have trouble. There are two slider-bar controls near the bottom of the application. When you run it for the first time, try moving the "Manual Input" slider-bar on either channel. You will see the associated virtual servo move with the slider. Now experiment with the various settings and create configurations that apply to your needs. When you are satisfied with the way the simulator runs you can save the configuration to a file from the "File" menu, or program a SM2 device if you have one connected. The screen shot below shows the SM2 Control Panel Application.

If your SM2 does not show "V1.06" then it may be eligible for our refurbishment program.