fischertechnik community forum

Further to this: My own experience with these updates is rather mixed. One of my controllers would not update at all from any earlier version (3.1.4 to 3.1.6): in each case it tried 3 times and failed at the first 1% indication each time. The reason turned out to be the corruption of the file system...

Hello Rien, Thanks for reading the TXT 4.0 book; I hope that you will find it useful. As to the Python mystery: there is usually a rational explanation for this. The print function is built into the Python runtime system, so it is available on any Python installation. A simple program such as the fo...

Dear all, This is to let you know that the TXT 4.0 Internals and Programming book is now available as premium full-colour paperback from Amazon. Compared to the editorial draft from a couple of weeks ago, the published version has a few hundred small corrections (typos, spelling errors, etc.), a new...

Hallo Axel, Please check section 2.4 in the TXT 4.0 Internals book; this explains how to obtain root access in the current version of the firmmware and how to add the "ft" account to the sudoers file to ensure that in the future you can run root-level commands while logged in as "ft": https://tarma....

Here is a partial answer: The motor outputs M1-M4 (and also their O1-O8 counterparts), are controlled primarily by firmware code that runs on the real-time Cortex-M4 processor inside the TXT 4.0. On the other hand, your Python program (or your Blockly program translated to Python) runs on the Cortex...

@Richard: Additional: I have just added a new example program to the example code for the book that shows one way of dealing with multiple extension controllers without getting bogged down in the discovery order of the extensions. It isn't in the text yet, but if you download the Txt4Book-Examples.z...

Hello Richard, Thanks for your message. What do you need to know about the use of multiple controllers? The book as it stands has a few sections that discuss how to use it, and of course chapter 11 is dedicated to the internal implementation of the whole Main/Extension controller scheme. To use one ...

Thank you all -- hope this book will be of use to many. Once the editorial review is complete, it will be issued as a printed paperback at a nominal cost for those who prefer a hard copy. The eBook will be updated at the same time and remains available as a free download for personal study. -- David.

Thanks Holger, I have these sensors myself too, and even took some pictures in a lightbox (you know, Amazon-style), but they were not quite as pin sharp as the images from the FT web site; that is why I was looking for "official" pictures. However, thanks to your link to the "Bild vom Kombisensor 6-...

Thanks for your feedback. Glad you found something useful in the book, and feel free to point out omissions or incorrect pieces of information. Also, if anyone has stock images for the newer 6-pin combi and environmental sensors that I may use in the book, then that would be very welcome. The FT web...

Dear all, This is to let you know that I have been writing a book about the internals of the TXT 4.0 controller, which is now available as an eBook for (free) download. It is currently an editorial draft; it still has to be reviewed for typos, glaring mistakes, etc., but should prove useful to TXT 4...