Learning material

STEM Coding Competition

The basis for successful participation in the competition

First Steps

A small tutorial for the first steps
Click here for the video

Connecting the TXT 4.0 Controller to ROBO Pro Coding

Important basics about ROBO Pro Coding.
Click here for the download

User Manual TXT 4.0 Controller

A small tutorial for the first steps.

Click here for the manual
Apps

Download ROBO Pro Coding App

Before you start, you need to download the app. Simply select the appropriate operating system and click on the link:

TXT 4.0 Controller

The TXT 4.0 Controller has a powerful 32-bit Cortex A7 processor, 512 MB RAM of storage space and 4 GB eMMC, three servo outputs and a touch display that supports gestures, and offers a wide range of new functions

Up to nine additional controllers can be connected to one controller as extensions. 

Firmware updates can be downloaded online via the fischertechnik cloud. The ROBO Pro Coding software can be used for graphic programming, as well as using the programming language Python. 

The software supports the following operating systems: Windows, MAC OS, Linux, iOS and Android. The app can be installed from any app store. 

Other features of the TXT 4.0 Controller include:

  • 8 universal inputs
  • 4 fast pulse counters
  • 4 motor outputs
  • 3 servo outputs
  • Combined Bluetooth/WiFi wireless module
  • Control via language recognition
  • USB host port
  • Camera port
  • Integrated speaker
  • Programming with ROBO Pro Coding or Python, C/C++ Compiler (not included in the scope of delivery)
  • 9V DC power supply 
Using the servo motor
The adjustment range of the fischertechnik servo motor is mapped in 512 steps in Robo Pro Coding. To fully utilize the steering range, the servo motor must be connected to a servo connection of the started TXT 4.0 controller before assembly. It then moves to its zero position. The servo lever can then be fitted. 

In the proposed axle steering setup, the servo motor strikes the chassis from a steering angle of +/- 52°. To protect the servo motor, the lever should therefore only be deflected between the values in this range.

The positions of the servo lever vary with different servo motors. It is therefore advisable to calibrate the zero position and the maximum deflection using variables. 

If you are using an individual setup for the stub axle steering, make sure that the servo lever does not hit the servo mount or your chassis. The maximum deflection up to the stop on the servo holder is +/- 58°.

  • First steps with the TXT 4.0 controller

  • The fischertechnik encoder motor

  • The fischertechnik servo motor

    Further information 

    For further suggestions for your robotics project, you can find various example programs including a configured display or camera in Robo Pro Coding. To do this, do not select an empty template in a new project, but "Example".  

    You can access the Robo Pro Coding documentation via the following link: 

    ROBO Pro Coding Books

    Valeria Castro and Alison Alemán from ID Maker El Salvador about fischertechnik.
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