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von rubem
15 Sep 2021, 14:32
Forum: fischertechnik allgemein
Thema: Zwei Arten von Farbsensoren? / Two types of color sensors?
Antworten: 0
Zugriffe: 117

Zwei Arten von Farbsensoren? / Two types of color sensors?

Hi all, I already had an ft color sensor and I ordered a second one from the same seller. This seller has semi-new fischertechnik parts from old schools stock, but she doesn't know much about the parts themselves. I noticed that the LED and the phototransistor/photodiode look different from what the...
von rubem
10 Sep 2021, 18:30
Forum: fischertechnik allgemein
Thema: Ob man die Druckfeder der Kugelbahn XM ...
Antworten: 22
Zugriffe: 1082

Re: Ob man die Druckfeder der Kugelbahn XM ...

Hi all, @Geometer, I never saw the NL Club article, but your description was clear enough. My caliper shows that the outside diameter of a standard 3 mm washer is exactly 7 mm, so I ended up with this: Hub and washer.jpg This is really a great idea, it can't slip this way. Another anti-slip option w...
von rubem
03 Sep 2021, 20:53
Forum: Modellideen & -vorstellung
Thema: Unbekannte Lenkrollen / Unknown ball casters
Antworten: 3
Zugriffe: 492

Unbekannte Lenkrollen / Unknown ball casters

Hi, A STEM company called Edventures sells some custom kits that include fischertechnik components, and they include an interesting pair of ball casters: RiQ kit.png The BOM states it includes "high quality swivels with steel balls" under the "fischertechnik" header. I'm not aware of these parts, ar...
von rubem
20 Aug 2021, 20:48
Forum: fischertechnik allgemein
Thema: Retro Mechanik Konzeptkunst / Retro Mechanics concept art
Antworten: 24
Zugriffe: 2337

Re: Retro Mechanik Konzeptkunst / Retro Mechanics concept art

Hi,

Wow! Really looks beautiful, great work! Looks perfectly retro to my eyes. Maybe our nice friends at ft take some ideas from this thread... Some old-fashioned stickers with the original logo would really be a great (and inexpensive) addition to any retro kit!

Warmest regards,

Rube,
von rubem
20 Aug 2021, 15:08
Forum: fischertechnik allgemein
Thema: Retro Mechanik Konzeptkunst / Retro Mechanics concept art
Antworten: 24
Zugriffe: 2337

Re: Retro Mechanik Konzeptkunst / Retro Mechanics concept art

Hello Holger, I'm glad you found the SVG useful. But please check again, there are no embedded JPEGs on this file whatsoever, it's 100% vector-based. As for the double-grouping, that's what Affinity Designer does when exporting. I would have also exported the logo as EPS and without the "R" mark rig...
von rubem
21 Jul 2021, 16:32
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hello again, I'm back with a follow-up: I've given up on pneumatics for my pinball project. :o I've replaced the valves and cylinders with push-pull 6V solenoids (model JF-0530B) controlled by a simple Arduino program. The solenoids are very compact (the body measures 30 x 15 x 14 mm, so they fit pe...
von rubem
09 Jul 2021, 21:52
Forum: Off topic
Thema: Erstaunliche 3D-gedruckte Miniatur-Achterbahn / Amazing 3d printed miniature roller coaster
Antworten: 4
Zugriffe: 882

Re: Erstaunliche 3D-gedruckte Miniatur-Achterbahn / Amazing 3d printed miniature roller coaster

Hello Harry,

Wow! These roller coasters by C. Knobloch are truly amazing, the ride video even made me a little dizzy... :) Of course this kind of implementation is far beyond what most people could accomplish, but awesome nonetheless... Thanks for the links!

Best regards,

Rubem
von rubem
09 Jul 2021, 15:10
Forum: Off topic
Thema: Erstaunliche 3D-gedruckte Miniatur-Achterbahn / Amazing 3d printed miniature roller coaster
Antworten: 4
Zugriffe: 882

Erstaunliche 3D-gedruckte Miniatur-Achterbahn / Amazing 3d printed miniature roller coaster

Hi everyone, Here's a really amazing miniature rollercoaster, the article says it took six months and more 800 hours of 3D printing: chrome_2021-07-09_10-08-28.png https://www.hackster.io/news/six-months-and-800-hours-of-3d-printing-went-into-this-miniature-rollercoaster-17a174e7e4c5 And the video s...
von rubem
06 Jul 2021, 23:04
Forum: Technik
Thema: Neues micro:bit-Erweiterungsboard / New micro:bit expansion board
Antworten: 0
Zugriffe: 293

Neues micro:bit-Erweiterungsboard / New micro:bit expansion board

Hi everyone, I've found an interesting board for the micro:bit and I want to share it with you: chrome_2021-07-06_17-36-38.jpg The specs say: "This expansion board not only leads to 9 micro:bit onboard GPIO interfaces, but also comes with 4-way motor drives and 8 servo interfaces, of which 4-way mot...
von rubem
02 Jul 2021, 00:31
Forum: Modellideen & -vorstellung
Thema: Setup with the new DE0-Nano-Soc board.
Antworten: 63
Zugriffe: 10197

Re: Setup with the new DE0-Nano-Soc board.

Hi Frans, Wow. Truly amazing (again). Hats off to your accomplishments. We can see that you do use fischertechnik as a base, but you are pushing its boundaries. I also find your combination of ft with control boards, 3d printed parts, conventional hardware and sheer craftsmanship fascinating. You sh...
von rubem
22 Jun 2021, 23:33
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hello Harald, Welcome to the discussion! The lubricant does not adhere in a way you would like it to At least this confirms my feeling that it lasts only for a while. The valves contain a solenoid, which means a coil, which means you are switching an inductive load. There should be a bypass / free-w...
von rubem
22 Jun 2021, 17:45
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hi again! I'm almost sure the hiss comes from the solenoid valve It is interesting to note that the piston offers some resistance when moving the it back by hand, even if it is simply connected to the valve as shown below and nothing else. The hiss is also there. Interestingly, there is no extra res...
von rubem
22 Jun 2021, 17:30
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hi Harry, here in this Forum we have got some kind of thread dedicated to pneumatic cylinder lubrication... There you find the lubricant recommended to be Paraffinum per liquidum Yes, I've read it... I'll read it again. At this point I can say I've browsed the whole forum, my "new posts" list is alw...
von rubem
22 Jun 2021, 15:10
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hello, @Stefan, yesterday I disassembled my previously opened cylinders (both blue and Festo types) and oiled them with silicon oil again. Especially the Festo one became amazingly smooth, but after just one day I can see the oil is not so effective. Perhaps this is not the right one? The local drug...
von rubem
21 Jun 2021, 18:59
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hi, Sounds like the cylinder is not oiled enough I once lubricated some of them with silicone oil. It kinda worked, but the oil wore out quickly and they went back to their normal state. Then I had the idea of removing the O-ring and inserting a spring, but the spring was too strong. Oh well... Stil...
von rubem
21 Jun 2021, 16:47
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hello Stefan, Can you use a fully intact cylinder? Leakage, expected or not, is no good ;-) I did that. The blue cylinders I have are very stiff so they move slowly no matter what. That's why I removed the O-ring from one of them in the first place. This may be a problem as well as it may not be a p...
von rubem
21 Jun 2021, 15:49
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hi again, Thanks for the check list!! My answers: 1) leaving the air reservoir away entirely: Didn't try that, I will. 2) use a larger air reservoir (one of the fischertechnik parts) and, more importantly, feed the air into the reservoir from one side and use another pin as output (not possible with...
von rubem
21 Jun 2021, 15:08
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hi Stefan, I would say your circuit is perfectly correct and just wonder why you connected the right valve *before* instead of after the check valve. Why not put both behind it? What is the sense of the check valve? You may as well just remove it, I guess. Yes, the check valve is optional at this po...
von rubem
21 Jun 2021, 01:25
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hello everybody, I'm back to the experiments with pneumatics for my pinball table. I feel more newbie than ever :cry: I supose I understand that a conventional circuit (e.g. from the ElectroPneumatics kit) should be like this: Conventional circuit.png (I intend to use two check valves so the air res...
von rubem
15 Jun 2021, 16:36
Forum: fischertechnik allgemein
Thema: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics
Antworten: 25
Zugriffe: 2143

Re: Fragen und Experimente zur Pneumatik / Questions and experiments with pneumatics

Hi Stefan and H.A.R.R.Y, Simply placing four self-adhesive silicone discs under the pinball table feet reduced the noise significantly, so my conclusion is that there is nothing wrong with the compressor. My desk was just resonating and amplifying the noise. I will still experiment with foam rubber ...