COPERNICON

i have been reading this thread for some time now (you guys are doing gods work!!!) the interface A working with PWM was a welcome surprise haha , i have code scraps of mine doing the same https://gitlab.com/COPERNICON/lego-interface-a-arduino-python (pardon the terrible code please) one issue with the 2 interface A's over one parallelport is that there might not be a pin available for the 5v source, all pins are used for reading and writing the I/O of the interface A...

thank you for taking a look, i also just now notice that i am in the wrong topic, my appologies!

i have controlled an interface A with an arduino before :-) it is really fun thank you for wanting to help me out but i dont want to take your time, regardless, it is possible to drive a interface A with the 5v of a usb port, so if you can use that you will be safe it is such a big shame modern computers dont come with any usefull ports like DB25's or serial ports.... luckily cheap chinese adapter cards exist :/ final comment on the DB25 parallel port: the computer can set pins 1, 2, 3, 4, 5, 6, 7, 8, 9 and 14, 16, 17 and can only read from 10, 11, 12 and 13 thus (theoretically) you can drive 2!!! interface A's via 1!!! DB25 parallel port!

i see, it is a shame there is so much current flowing, it would have been cool if you could be using a standard FT232 or parallelport to switch on or off the interface A, ft232 boards have often a 5v pin (from the usb port i guess) so if you add a transistor to one of the data pins of a ft232 boards you can maybe switch the interface A on or off that way.... i think it is possible for a DB25/parallel port, in the article of lgauge.com about the interface A they used 2 control pins (1 and 14) for the 5v for the interface A, i dont know these pins can be controlled by the computer, it is also unclear what the current limit is of these specific pins i am considering getting a dirt cheap pcie to parallelport and serial port card for my PC, could be fun to control the interface A (with a custom cable) and an interface B ok, continuing on the DB25 port: Data register: controls pins 2–9 (DATA0–DATA7) => can only be set by PC Status register: reads inputs from pins 10–13 (and others) => can only be read by PC Control register: controls outputs on pins 1, 14, 16, 17 (and others) => can only be set by PC

would it be possible to hook the 5v input of the interface A to an I/O pin of (for example) a FT232 or arduino, if the 5V is just needed for the logic µC's it maybe can be used to enable or disable the interface A via the PC, for example as an e-stop controlled by the PC...?

just think they could have done a little bit more with this set...even if it is just a crude and useless clutch or whatever, just so you have something extra to play with

oh, i see

they could have included a one way gear with this set....

hello, i have archived the educaboek's lego lines software some time ago, i have an almost complete educaboek book set (see this: http://www.miniland.nl/Dacta/). i have been talking with @amine about it on discord, i have archived most books of the set, i only need to do the student manual (i dont have an appropriate scanner for it...yet). the only thing i am missing from the educaboek set is this odd piece: you can find the scans here: https://archive.org/details/educaboek-robotica-nl everything is in dutch though....

here are some more pictures of the internals of the free wheel gear: https://brickshelf.com/cgi-bin/gallery.php?f=589013 apologies for the quality of the images, those are pretty small parts... @Stereo was kind enough to share one of the images for me as i didnt know how to upload images to eurobricks (apparently, you dont) it is not really hard to disassemble one of these gears, you just need to push the green tabs in one by one, dont apply to much force, you just go around and push slightly, eventually they will pop out, then you push with equal force on all 4 green tabs to slide it out, again dont apply to mush force, the green part is very thin and flexible, it will give

for the interested, the 3 parts of the free-wheel gear have the following text: grey housing: "7161" , "7-01" , "© 2025 The LEGO Group" orange core: "7162" , "05-01" , "© 2025 LEGO" green housing: "7163" , "1-01" , "© 2025 LEGO" yes, it is 2025 not 2026, that was quite the surprise but i guess it makes sense, these parts need time to make i was hoping to find some sort of patent but i found nothing, which is good because that means 3rd parties can create and sell there own similar designs also i am somewhat surprised by general the lack of excitement on the internet about this part and the 64 teeth gear.... like people, we finally have new cool technic parts, not just stupid panels???

i have a feeling this supercar will just be like the mc laren from last year... all the supercars are the same for me, just with different colours

does someone have/knows pictures of how the freewheel/oneway gear looks on the inside?

what a nice tatra 813! it looks like a very capable trial truck how is the battery life with the PU hub also how good are the tires? they look pretty hard

the facebook post who leaked it didnt share anything about a release date or window right? it looks like a finished set but it can always be a prototype/moc-up.

complaining continues until morale improves.... besides, i dont think i am that wrong anyway

is it just me or does modern lego technic feel completely underwhelming? the last set i really cared for (at release) was 42129 zetros and i remember a quite some negative opinions about it.... i am also a big fan of pneumatics but after 42043 arocs (i bought the set 3 times, that is how much i cared) there doesnt seem to be anything new and also why do non-technic themes get more newer and cooler parts then technic? maybe i am out of touch but 2026 technic feels boring and finally (oh my god) there is NO REASON to buy 42242 U5023 (€120) unimog when you can be 8110 U404 for €120-200!

the bugatti 35 was produced between 1924-1930 (if Wikipedia is to be believed) so it could be a 100y/o anniversary thing the rims seem to be common on these cars, tbh, the use of SLS 3D printed parts makes sense for this small run still, an absolute shame that lego is making this a exclusive set

at least pybricks is still an option, it sucks so bad that lego just doesnt care to future proof its products

ULTIMATE Robolab (UR) is a modification to robolab 2.5.4 (RL254). It was created by Claude Baumann in collaboration with the CEEO (Tufts University) from 2004 to 2007. UR adds many tools and functions to RL254. It flew all these years under the radar because it was mostly developed near the end of RCX mindstorms and mainly developed locally in Luxembourg. UR is sadly not compatible with RL29# because of mayor differences. main benefits: every programs becomes its own RCX firmware => many more options, efficient and fast! more data types: 1D and 2D arrays, integers, (un)signed variables,... access to low level RCX functions, RCX opcodes better timers multitasking, subroutines .... There are also many tools added to RL itself. Resources: There arent a lot of resources other then the official (now dead) website: https://web.archive.org/web/20090727214457/http://www.ultimaterobolab.com/ and some topics on good-old lugnet: https://news.lugnet.com/robotics/rcx/robolab/ Installation guide: First you need to install RL254 (this one or this one). RL254 can still be installed on x64 win7 and win10 machines. I also had successfully installing it on Linux Mint using WINE (although i did not test the modification!). Then you download the latest version of UR (from here). To install the modification you can just follow the instructions on the UR website but you just need to drag the "INSTALL_ULTIMATE_ROBOLAB_150.vi" on the RL254.exe and follow the instructions, then optionally you can replace the default .ini file with the custom one.... Programming: You really need to know RL before you can start with UR. RL is already quite incoherent and confusing to use but UR add many options and custom tools that it becomes somewhat confusing in how to use and more important where to find them. I sadly dont have much experience with both RL and UR (i was about 5 when RL released ;) ). There are also not many guides/resources on how to program using UR or even RL! On the UR website you can find some .pdf's under "intro" and "advanced".

I have been looking for proper 3rd party/alternative pneumatic tubes to complete my older lego technic sets. So far i havent found many good alternatives to 1st gen and 2nd gen tubing. 1st gen (1984-1987) seems to be using a PU/PVC based tubing, i wasnt able to find any good alternatives. It is unclear what material tubes from the 2nd gen (1989-?, see set 8868) sets are, it doesnt look like silicone, it is also a very durable material, so far i havent found any good alternative. For 2.1 gen pneumatics some sort of stiffer silicone material seems to be used, or so i think at least, MouldKing and brikshop.eu has decent alternative tubing.... So far my favourite alternative tubing is FKM/Viton, it bends really well and is extremely durable, unfortunately it is quite expensive €3.5/meter on aliexpress. Silicone tubing can be a hit or miss, silicone seems to be to soft in general to hold any good pressure, it is also hard to find a good seller on aliexpress. I am wondering if generic rubber/latex or NBR tubing would be decent.

i spend a long time finding the best official lego RC system and tbh, they suck all; PF is the easiest to use but to limited, PU is to limited and BLE sucks, 9v to rare and expensive i recently started experimenting with genuine RC electronics with custom adapter cables to PF motors (and geekservo servo's) it is by far the best for advanced/capable RC creations, the absolute best might be a rc receiver to serial and connecting it to an arduino, to make a programmable custom "hub"

Hello! My name is Edward. I am 23y/o, i have always been a lego fan. my "lego story": i have always been a fan of lego star wars, only later my interests shifted towards technic, especially technic RC stuff, in doing research on lego electronics i learned about lego dacta and educational, since then i am a hardcore dacta/lego electronics collector! I now have a large collection of 70-80-90's technic, a respectable 12v train collection, and boxes and boxes and boxes filled with all sorts of dacta sets, electroncis and technic stuff! my favourite lego sets: 9701, 1092 and the amazing 8860! I am always searching for local (BeNeLux) people with the same interests! Thank you!