Toastie

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About Toastie

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    Good Spirited
  • Birthday 02/17/1962

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    http://www.physchem.uni-wuppertal.de

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

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  1. Toastie

    how to power pf motor on 12v track

    Folks folks folks!
  2. Toastie

    THE PIRATE BAY IS GOING TO BE AN OFFICIAL LEGO SET!!!!

    Holly crap - I found it. I found the "unfollow" button and the "Don't send me email notifications". My goodness. And I sure hope this Corona thing comes to an end - so you guys can go out, and blow off steam somewhere else. This thread has gone insane.
  3. Toastie

    9V bar layout, including 90s sets

    Noooo-ooo-ooo ... I never got the "probably" thing in their ads Oh well, I was raised in very close vicinity to Denmark (15 miles away) - plus that part of Germany was Danish before for long ... so I guess yes, I am seriously biased. Are you more into beers like these? All the best Thorsten
  4. Toastie

    how to power pf motor on 12v track

    Regarding the colors: I cheated (asked my daughter, they are used to that - when I am asking random people for a color, they at first have "this" look in their face) Regarding the resistance: That are the 22 Ohms causing the voltage drop. I'd try something around 3.3 Ohms initially (a value of the "E12" Series). The thing though is the wattage, the resistor needs to dissipate as heat. The resistor you used seems to be of the 1/4 W series. I'd go for something like these: https://cdn-reichelt.de/documents/datenblatt/B400/5WAXIAL_9WAXIAL_11WAXIAL_17WAXIAL%23YAG.pdf The can dissipate 5W easily. If that does not work (still too much voltage across the XL even at medium load), I'd increase the value to 10 Ohms or so. Thing is: Just one part, clocking in at about €0.50 ... But there must be somebody around here who for sure knows much better than we two 7/8 blinds (electronically-wise). Have a nice day! Thorsten
  5. Toastie

    how to power pf motor on 12v track

    Was it the XL motor or that poor 1/4 W resistor? When the XL motor tries to push the EN over the track, it will draw some serious current, wouldn't it? Philo's page says the XL motor draws 1.8 A at 9V when stalled - and about 0.1 A at 9V freely running. As I am color-blind, I can't really get the resistance from the rings in your picture; it sure is 5% tolerance and the third ring is black. Let's assume the first two are red/red = 22 Ohm? And then we assume 0.3 A current going through the XL/resistor line. W=I^2 R = 2 W. That should give some nice smell - but from the resistor, right? Also the voltage drop at 12 V would be more than 6 V ??? Hey, I have learned my electronics wisdom from trial and error as well! I sure know the smell of burnt resistors, transistors ... virtually from everything, the electronic industry is providing for dummies like me! Where is @dr_spock when we need him? All the best! Thorsten
  6. Toastie

    THE PIRATE BAY IS GOING TO BE AN OFFICIAL LEGO SET!!!!

    I believe this is the core of the matter. Plus: The set is beautiful, breathtaking, lovely, touching, with all you want to see in it. When it arrives though, it is a pile of plastic ABS bricks - in plastic bags. We should also remember this - in the hard times we live in right now. The "freebie" is maybe and hopefully a bit less important - in the hard times we live in right now. What I find so incredible is, when the pile of bricks (do it: just throw them all onto one pile and look at them, at some distance) turns into a miracle - dreamed up and realized by - people. I wish all of you lucky people who got the set, all the emotions, the fun and pride, you deserve! And maybe there is a second or two of spare time - within all that joy! - to think about the people who try with their best to save the lives of the unfortunate - who were doing their jobs at 0:00 release time of the set, who tried to order other stuff with priority mail, and weren't getting anything. These people >are< unfortunate. We may be just missing out a LEGO set. All the best, be careful and stay healthy! Thorsten
  7. Toastie

    how to power pf motor on 12v track

    Ahhhaaaa - thanks guys! You are ingenious! So what about a let say just one 3 Ohm/5 W resistor in series to the motor? No resistor: Let's say the 9 V motor draws 1 A (that is just for simplicity) at 12 V (=> full speed) with some average load - and everything goes nuts. With 3 Ohm resistor: The voltage drop across the resistor would on the URI-order of 3V isn't it? The behavior would be a little off, because when the motor has more load, the voltage drop increases of course. However: All that circuity vs 1 resistor. Are you guys sure that the 7809 is actually regulating below its nominal input voltage? Or is there some current dependent behavior on the output (as with an e.g. 3 Ohm resistor?) I am a chemist, and I just work here so I don't know much about electronics.
  8. Toastie

    THE PIRATE BAY IS GOING TO BE AN OFFICIAL LEGO SET!!!!

    You are a lucky man! Told my wife about this way earlier than yesterday: Wife order limit: 0 But you know what: Earth is still spinning - sun came up this morning - first coffee from the what are they called - wait where is this Google thing when you need it; are here - fully automatic coffee maker (sounds stupid) I repaired last night was really good (phew, that was a four hours work until close to midnight, its an Italian machine - was not too expensive 7 years ago (about the value of the website limit), and the spindle nut of the brewing unit was worn out. Ordered a new one (€10) and: It works!!! Unfortunately not even that worked towards the limit (I mean a new one would have been, as said, the website limit amount) It's so nice to see all the folks here in the house grabbing their coffee again. Plus: I am the local coffee machine repair hero. Priceless. Have fun building and stay healthy!!! All the best Thorsten
  9. Toastie

    THE PIRATE BAY IS GOING TO BE AN OFFICIAL LEGO SET!!!!

    Well - at GMT -2 only of course. Sorry that you guys live in the past - or future? I am always fuzzy about that daylight savings business ... it will come though - that message will come
  10. Toastie

    THE PIRATE BAY IS GOING TO BE AN OFFICIAL LEGO SET!!!!

    5 more minutes here. You know what will happen? BOOOOOOOOOOOOOOOOOOOOOOOOOOOOM ... IMPORTANT MESSAGE FROM TLG-CONTROL - IMPORTANT MESSAGE FROM TLG CONTROL Due to the >totally inconclusive< and really weird "I know better than you" series of posts - this test will now be concluded. To all participants: This was a test. Please build your own set suiting you best. OVER AND OUT. And then ... silence. Beautiful, calm silence. ... "Brrrrppppp mememememe chrrrrr - sorry? The colors suck ... it was 10k votes for this this this and that Brrrpppppp. And then it begins all over again ... 0:00 its April Fools' Day!
  11. Toastie

    how to power pf motor on 12v track

    Hi Emanuele! How's life - and more importantly how is the family? I sure hope you are all doing well!!! Cross my fingers and hope and wish the very best! Phew. Why am I so slow ... I think I am still missing something. All what you are describing makes perfect sense, but only when the the track is permanently powered with 12V and then lets say a PF receiver does the work of adjusting motor power, right? I mean, a 7809 does really not know what to do with - lets say 6V DC applied to the track as input voltage from the LEGO 12V Transformer/power supply? Wasn't it as with 9V? The speed regulators (12V or 9V doesn't matter) apply 0 - 9/12V to change speed. An onboard 7809 makes only sense when there is > 10V input voltage. Or do you use the 7809 to max out the voltage applied to the track? Best Thorsten
  12. Toastie

    how to power pf motor on 12v track

    I am confused. You have a 12V layout, with a 12V DC power supply feeding the track, correct? If so, the 12V DC power supply has a dial that goes from -12V to 0V to +12 V, correct? You have 12V power pick-up from the track feeding a 9V motor, correct? If that is true, then I do not understand how that should work, as you would need to proportionally convert the 0 to 12V to 0 to 9V. Why don't you use a +/- 9V speed regulator then? The ones for the 9V train era with the big yellow dial sell rather cheaply. Or do you want to run many original 12V engines on the 12V track and you just want to individually address that problem you have on each "new" train? Best Thorsten
  13. Toastie

    9V bar layout, including 90s sets

    Showing one of the best beers in the world ... Nice! All the best Thorsten
  14. When I saw the picture of the "box" I thought oh my, what a nice box - upon scrolling further down, when all the little plastic bags showed up, I fainted - when I "woke up", I thought "what a wonderful dream", saw the bags again - and fainted. Since then, I am in an indefinite loop - which is very nice during these times! All the best Thorsten
  15. Toastie

    THE PIRATE BAY IS GOING TO BE AN OFFICIAL LEGO SET!!!!

    Oh yes, how nice, happy birthday! Best wishes and I sure hope that you'll get your hands on this beautiful set! Thorsten