PG52

Thanks to all, that's amazing ! I'm really glad you appreciate the spirograph ;)

Hi everybody, here is my new GBC module, using a particular "In basket" following and improving an idea of Platystick (a Techlug member) : the balls fall out of the basket by its side, no possibility of locking. The six-arms wheel system is already known for a long time. The chassis is optimized, the mechanics very simple : M-motor, 16t-20t, and on the one hand, worm gear-8t for the in-basket, on the other hand worm gear-24t for the 6-arms wheel. The module can be used in a classic GBC circuit just moving a flex axle (the same as the four on the 8285 front racks), then the balls are redirected to the end of the module using the ramp which isn't usend in the video :)

Well, so you can place it, it's my MOC but you Legolijntje, Alasdair, Philo, Freakwave made the instructions, I didn't help a lot...

Wow, the instructions look really excellent ! I'm not registered on Rebrickable, do you think I should register and post or it's not a problem if someone else posts them ?

Thanks ! The pointy hat is added, I'm thinking to a system to make the witch moving back and forth and turning her head...

Hum. You shouldn't delete the cardans, they're very useful to delete friction in the mechanism...

Wow, it does look very good ! However, the BS gallery isn't available anymore. Just one thing on the cover page, my pseudo is "PG52" and not "PG15" ;)

If you like, you also can add a link to my GBC playlist on YouTube : The last three are the most interesting, the others are quite old and simple.

Thanks to all ! I don't have a lot of time, I'll answer rapidely... -I don't like using two motors when I can use only one, and the "magic" side would be lost -Sorry DrJB, I turned my post bad (well, my English needs some improvements...), I didn't want to say that you thought my design was bad, I was just interested in seing what improvements you added :) Because when we design a MOC, after a lot of hours spent on, it becomes quite difficult to see what is bad, what can be a problem, can be improved. I saw your modifs, that's very good but maybe it can add friction (if you can build it, you will be able to see if, mine is out since i've began the 5th version) -@Philo : I use a classic BIC for the drawings, a felt tip (feutre ?) would be far too large :) Yes exactly, it improves the stability of the arms ompared to the 5th version (see the drawings page 1, the last one is much more fluid) Your idea for raising and lowering the arms is interesting, I thought to something automatic which would transfer the movement of the board to this type of raising bar when the board has made a complete rotation. But the precision would be a disaster ; to make something manual is a good idea ! Considered for the 6th :) It's really nice of you all to work on real instructions, really thanks... :D

Thanks. You're right, 11 driving rings, but the 6th will have at least 15... I will make an lxf file when I find time, probably on the next WE :) I haven't put it on Cuusoo, you really think I should ? Maybe with a better design... Maybe the 6th version :)

Thank you all for the compliments, i'm glad you find it fantastic ! I saw too in my family and friends that they are much more interested when the MOC isn't the final goal, as spirographs or GBCs for example. When they can consider the LEGO bricks as a building material and not as the central point of the MOC. And when it creates something, it's even better. Some people who didn't care of LEGO cars or trucks, or detachable gondola (sic) make round eyes when they see a spirograph running. The BS folder isn't public yet, I'm curious to see what problems you found and how you solved them DrJB ! And now... The 5.2th one. And the kind of drawing it makes : And the video : (I don't know if it will work...) EDIT : it works :)

No, there is no high torque anywhere... Mine ran hours long, and three days long at Fana'briques without any gear broken. Your 12t should have been cracked before... Thanks to all for your work, I'd be unable to make all this, it's fantastic !

Of course you have permission to put it on rebrickable

The 5th works in size A5 instead of A6. A friend, Cedric has made one which makes drawings in A4 but it is much more unstable... http://forum.brictechnic.fr/viewtopic.php?f=114&t=5335#p61460

Thanks all ! This render is very nice, doesn't matter for the arms, complex geometries are always very hard to obtain on LDD, I can't imagine on LDraw... I've finished the V5-2, it is coming soon (end of the week or maybe tomorrow if I find time), it works well but the design isn't as good as the fourth's one.

@ legolijntje : I'll make a LDD file for the 5th, so I'll send you the link. But I also wanted to make another instructions than LDD's ones, which aren't practical at all... (When I reproduce a MOC with LDD, I never use the instructions mode, always reproduce it directly) The LDraw render is impressive, much better than LDD's ones ! Looks really good :) @ DrJB : I tried to imagine the kinematics and to calculate them approximately before building, but on paper, without any software. The best drawings are obtained by caculating the best "base drawing" (typically one cycle - it can be more), but I can't do that for drawings which are very complicated so it's trial, errors, and a bit intuition in that case :) For the fifth version, I can easily know how the drawing will be before making it when it is the same type than the two ones I showed above ; the machine is also able to make the same kinds of drawings than the 4th, which are still quite complicated to calculate, though. I'm already thinking to the 6th version ; I'll perhaps be obliged to make an algorith to determine the type of drawing before, because the possibilities will be really very numerous...

Thanks to all for your warm welcome ! When i've finished the V5 I'll probably make instructions (but pictures instructions, I don't master SR3D or LDraw at all). About the L motor, I put it because it is easier to fix than a M motor, I think that the power of a M would have been enough... The MOC is quite fast, though.

Hi Eurobricks ! I saw JM1971's and Anio's messages, and I just registered. Thanks Blakbird for posting my spirograph ! I'm glad you like it ! Thanks, too, to JM for posting the new link, and sorry, I unintentionally deleted the previous one... I'm working on the fifth version, which is able to make this kind of drawings : But it's hard to make it reliable and to suppress all the vibrations of the pen. So I'm working on the version 5.2 now :)