Eurobricks Dukes
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About Toastie

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    Good Spirited
  • Birthday 02/17/1962

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    A minifig

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    LEGO, electronics, micro controllers, lasers, making things work


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  1. @evank Well, then here we go ... Born '62, my first LEGO set was #323 - the push along train (I still have). No Technic sets for me until entering my dark ages in the late 1970's - resurfaced from that period in 1996 and "found" #8485 (Control Center II) dead cheap on sale. But for me, the best Technic set of all time is #9719 (LEGO Mindstorms Robotics Invention System 1.0). It changed everything in my LEGO world. Best, Thorsten
  2. @evank: Do you want to break out the real Technic, or should I? Best, Thorsten
  3. Toastie

    3rd Party Controllers and Powered Up!

    Hehe - OK. Now: First party is TLG, right? And third party is ... whoever exists in non-first party land other than ... me/everyone? Is that right as well? So second party is - personal party, correct? If so, this is definitely the way to go! All the best, Thorsten
  4. And that is a blast! I recently "returned" to my beloved Sinclair ZX81 and Spectrum, the latter having a RS232 port - they all live here in my attic - along with a PCW8512 (Joyce), an IBM XT and an Atari 1040 - all from around or before 1985 - almost 40 years old (next year is going to be THE big celebration data party up here - OK me, a bottle of Captain Morgan, and the other oldtimers) - and all going strong, as you said. And talking happily to my Win11 laptop. 9600 baud - the >real< light speed and true benchmark in serial data transfer world ... You should dive into LEGO Interface A world - some here on EB know much more about than I do! That is so cool; 1986 LEGO Technic ... controlled by either of one of the above oldtimers - or a Win11 laptop. Sooo cool. Have fun! All the best, Thorsten
  5. Woo-hoo!!! OK, getting sentimental - but: One of the things that drive me, is getting "good old" and "apparently new" stuff together. And the serial port (now in the incarnation of USB) is the way to literally talk to - ancient teletypes, in a decent way. Or the very first computers. I love the original handshake approach, the original serial interface implementation (25 wires ...). You know that 2 + GND wire (+ XON/XOFF in software) is just a matter of hardware speed, but essentially same old thing: When you are busy, I won't talk. And vice versa. And now you have the LEGO Interface B at your fingertips! Simply wonderful. Have all the fun with it! Or: Ready Player One! All the best, Thorsten
  6. Congratulations! That is very good news! I actually believe that you can use a Win11 computer with such a dongle and a terminal program for starters! Also, the VS C# program, Tom is providing on his website ( should work! Very cool - I love it. All the best, Thorsten
  7. Hi Lars, can you share that schematic as well? For sure the UART in the SAB chip gets confused with the serial input, but I would not know how to trace that to a faulty power board without knowing how that is wired. What is the primary power supply you are using? Should the ripple etc. a problem: Do you by any chance have a stabilized 12V DC power supply, let's say around 1A? That would remove all ripple, and the diodes take care of polarity issues. However, first it would be good to have a look (sketch is enough!) at the power delivery section (the small board) before making any further suggestions. Best, Thorsten
  8. Hi Lars, you need to use an image host platform (e.g. bricksafe etc.) for storage and then c/p or embed the image links into your messages. Best, Thorsten
  9. That IS a nice document! According to the datasheet of the Siemens SAB chip ( you need to supply 5V DC as well; is that active? Best, Thorsten
  10. Hi Lars (@LH4PI), could you provide that link, where this Italian guy is mentioned? The search function of EB is not of much help to me in this case ... I don't own an interface B - but before you go diving into the innards of the IB electronics, particularly the Siemens SAB 80515 chip ... in 95% of all my RS232 "troubles", it was the serial port/cable wiring. I did not really look into the details yet, but are you sure that the 2/3 crossing and 5 (GND) straight through (5/5) is all there is? Could very well be, but true null modem cables also cross 4/6 and 7/8 (for 9 pin hardware handshake). LEGO was always creative and did some tricks to make you use their very cables, as others did not work. @BatteryPoweredBricks: Is the 2/3 crossing the only thing happening in that cable? It does not mean anything should there be more wires used, but, well it could be. TLG did something nasty it on the totally dumb Mindstorms IR tower as well; this one only uses 2/3/5 for all functionality, but without a 7/8 bridge within the tower, the original LEGO software refused to work. All the best, Thorsten
  11. Toastie

    7710 with Red and Black motor

    12V voltage - I could not resist, Emanuele - Alessandro Volta, the brilliant Italian physicist ... The current guy is from France - also brilliant, but wait - you are right: It is the current driven by a 12V voltage. Ha! You just left out a word like induced or driven ... I get it! All the best and say hello to the family! Yours, Thorsten
  12. TLG's tricksters - always in for a special treat, aren't they? Particularly when it comes to cables and electronics Well, one of these lill' sub-D 9 pin female/male null modem adapters + your straight through serial extension cord will do as well. Amazon has them and many other sources (Ali Ex for a fraction of the Amazon price of course) Best, Thorsten
  13. Toastie

    PF Lights on 9V Motor

    Oh yes ... here is to TAE (no Nobel Prize for him, but he made it work for everyone, and that is much more important ). Any tiny tungsten wire will light up either way; that is the simplest and most efficient solution. I love it! If you want to go LED - the bridge rectifier is your friend. Will drop the voltage by about 1.2V, but who cares at 9V supply voltage. Best, Thorsten
  14. Can only agree with @Vilhelm22 ... I am speechless. See, in the photograph with the three attached locos I am not sure, but the other photographs certainly don't look like LEGO but the real thing. Wow. This is perfection to the very end. Congratulations!!! All the best, Thorsten
  15. Thank you very much @Asper! Well, it would be a good project as is, when the monorail would be a full circle or whatever shape but closed - then the Tenka app would suffice for running the train in a controlled fashion. But I simply don't have the space for that closed loop. However, with the help of your code for controlling the CicuitCubes via an ESP32 based microcontroller, it eventually may become a good project. My plan is to have it (forward) accelerate out of the main station just to decelerate into the "remote" station and then go in reverse to the main station. I did something similar with my PUp/ESP32 controlled Crocodile using IR proximity sensors. In this new setup, I like to try these small forked light barrier type sensors - for fun. So far I am programming the ESP using your BLE includes in totally BASIC-style C/C++ - global variables all over the place, just to mention one no-go ... so far I can control the CC connected motors individually using the LEGO PUp remote; the ESP is waiting for two H-bridge motor drivers to spin the gears on the center support post and the door of the station. We'll see. All the best, Thorsten