Note:
As the SDK software is distributed free of charge, we will not give support on how to write your application software, since programming knowledge is expected and it is up to you how you use the SDK.
Although that you need to be a programmer, the SDK supplies example programs in Microsoft Visual C++, Borland C++ Builder, Microsoft Visual Basic and Borland Delphi, to make it easier to understand how the SDK works.
SDK for controlling SimKits gauges. version 2.94
With the use of the SDK, you can drive the SimKits devices from your own software via simple function calls.
It is possible to read data from, and write data to SimKits devices via the CCU=2. Since the communication between the SimKits driver software (controlling the CCU-2 board) and the SDK software is done via TCP/IP, you can either drive the devices from another computer over a network, or from the same computer where the CCU-2 is installed.
Using the SDK, all I/O lines of the Central Control Unit are accessible as devices (an Airspeed Indicator is a Device, like a Switch is a Device). So now you can even control inputs as there are for the Yoke, Rudder Pedals, Digital Clock, Switches, Circuit Breakers, etc. The SDK does even allow you to write or read to or from individual I/O pins of some connectors on the CCU-2.
Now you can write your own application software for:
- Interfacing to any other Flight Simulator Software than FS2004/X
- Direct control of the gauges from self written IFR Training software
- Fun Applications
Devices are controlled very easy. For example, to position the Altimeter on an altitude of 12.000 feet, you simply send the value "ALTIMETER 12000". Or to set the Airspeed indicator to 98.5 Knots, you use the value "AIRSPEED 98.5".
The SDK includes sample source code for all supported programming languages.
The SDK supports the following programming languages:
Language/Environment:
1. Microsoft Visual C++
2. Borland C++ Builder
3. Microsoft Visual Basic
4. Borland Delphi
- As many users have now the TRC Yoke - which has a realistic travel of over 18 cm. in and outwards and a realistic roll of 180 degrees - the sensitivity of the Yoke was too slow. When moving the Yoke now with this new release, the reaction of the aircraft is more in accordance with reality.
- The second improvement is for the Trimwheel, which is now disabled in all vertical NAV modes when using the auto pilot. This fix has the following reason: Microsoft Flight Simulator is changing the physical setting of the Trim Wheel when controlling the aircraft via the Autopilot. Since the hardware trim wheel position cannot be changed by MS FS, the actual (hardware) trim wheel position conflicted with the MS FS trim wheel position in software. This has now been fixed. Note: when you do an approach on the Autopilot, you have to take care that the trim wheel is in a neutral position when taking over the aircraft on short final from the Autopilot. When you switch off the Autopilot, the trim wheel will be enabled immediately. A wrong position of the trim wheel can cause unexpected decrease or increase of the aircraft causing problems on short final!
- The third improvement is on the VOR1 use. Under certain circumstances the VOR1 could indicate wrong values. This has been corrected.
- The altimeter is movement is improved, and acts more realistic.
In version 2.95 the following improvements/additions have been made:
- An "error 2" is returned if a value is requested from an instrument which is not installed in the calibration tool.
- A new variable "set_reply" keyword added, this variable is used to indicate if a "ok" reply should be returned after submitting a value to a varaible:
0 = no reply, 1 (default) = reply
- A TCP/IP error will not open an error messagebox anymore
Download SDK Manual (210Kb) 
Download SDK 2.95 (4.6Mb) 
SDK for controlling the RSC372 Radio Stack modules
The TRC Radio Stack is an extreme realistic set of avionics, controlled by an electronics interface board called RSC and software drivers, developed by TRC Development b.v.
There are drivers available which connect directly with Microsoft Flight Simulator FS2004/X if you don’t want to program yourselves (it is necessary to obtain a license for FSUIPC from Pete Dowson when using FS2004). The SDK includes sample source code for all supported programming languages.
Because of many requests from cockpit builders with programming skills, TRC Development has produced a so-called Radio Stack SDK. The Radio Stack SDK enables you to drive the Radio Stack devices from your own (Flight Simulator) software.
Basically, with the use of the Radio Stack SDK, there is no limit to use the Radio Stack Devices from any type of software written by yourself.
With the use of the Radio Stack SDK, you can read and write values directly to and from the Radio Stack Devices.
The Radio Stack SDK requires programming knowledge on one the following programming languages:
Language/Environment:
1. Microsoft Visual C++
2. Borland C++ Builder
3. Microsoft Visual Basic
4. Borland Delphi
Latest version of the Radio Stack SDK, version 1.6b2
- TCP/IP errors will only generate a message in the toolbar and not a MessageDialog.
- SDK accepts both . and , as decimal separator.
- added feature to allow programming of the VFR code.
- ADF range changed to 200-1799
- Added ADF countdown timer
- Added ADF Fly Timer
- New variables for Autopilot
New SDK variables:
ground - Ground indicator (0=flying / 1=ground)
adf_adf - ADF mode (0=ant / 1=adf)
adf_bfo - BFO mode (0=off / 1=bfo)
New SDK Variables added in version 1.6b2:
autopilot_arm - 0 = arm off / 1= arm on
autopilot_altmode - 0 = alt mode disabled / 1 = alt mode enabled
autopilot_vsmode - 0 = vs mode disabled / 1 = vs mode enabled
These variables are read only.
Download Radio Stack Controller SDK 1.6b2 (3.1Mb) Download Radio Stack Controller SDK Manual 1.1 (150Kb) (SDK manual is not yet up to date)