fischertechnik community forum

PHabermehl hat geschrieben: ↑

15 Apr 2021, 17:21

You're welcome as always

Just one more remark: the 2x3 tube does not work for vacuum. It collapses and blocks.

Kind regards
Peter

Good to know that, thanks! I'll order 2x4 then.

Hi The Rob and Peter,

I didn't know ft is also using silicone tubes, that's a good thing. Since both external diameters are accepted I'll probably shop for both diameters and use whichever is most appropriate. Thanks for the information!

Hi Rubem, as far as I know fischertechnik lists the marbles as 12.5mm diameter. They are in fact, as you suspected 1/2 inch, 12.72mm. Source: https://www.fischerfriendsman.de/index.php?p=10&sp=10#R10239k Thanks, great info! The "12" is actually taken from FTDB, the part is listed as "Metallkugel 12...

The Studica web site is (was?) a great place to shop for spare parts in the Americas. I purchased from them more than once and they have (had?) fair pricing and excellent service. But today, to my surprise, the address https://www.studica.com/fischertechnikSpareParts now redirects to another domain,...

Hi everyone, I need to buy some extra hose for pneumatics. The original hose 122363 is specified as 2,0 x 3,6 mm, and all other hoses from the FTDB have an inner diameter of 2,0 mm. Unfortunately the thinnest blue PU tube I can find is 2,5 x 4 mm, so I suspect it will not work. Silicone hose with an...

Hi eumel, Great, thank you very much for your feedback. I actually was tempted to buy the same sensor because it has excellent specs. There are also mini laser time-of-flight sensors with seem to be even better, and I'm sure I've seen them here in the forum somewehere (by Juh, I believe). But the te...

Hi all, I'm currently purchasing some stell balls to build a small marble run, but I don't have any of the original ones (part # 144262). Are they indeed 12 mm diameter or actually 12,7 mm (that is, 1/2 inch)? I believe this small difference is not important, but I just want to be sure. Thanks for a...

Hi all, I have built a slightly improved version of the high bay storage rack from the Robotics Automation Robots Set. Much faster speeds can be achieved with just a few modifications in the original model. The photo shows how I changed the encoder motor gear ratios, and the original worm drive for ...

Hallo... Olny as a information. Conrad Elektronik has a different one. This has a different connector and ist "V2". Thank you, I didn't know about the "old" version. I bought these from Ali Express from a store called "EC-Buying Ali Store". They are extremely cheap (probably less than one Euro) eve...

Today my new RWCL-1601 ultrasonic sensors arrived, and they fit perfectly inside the original ft housing with no modifications except for the removal of the 4-pin header connector. The sensor has exactly the same width as the original PCB (upper left). I soldered four thin flexible wires on it and b...

Recently I've been testing the DRV8833, which (nominally) can drive up to 1,5A. I like it, as It has some additional features such as overcurrent protection, current limiting, and a fault signaling pin. A little off-topic, but still about chips: The Didacta board included in the ft Starter Set for ...

In case you did'nt notice, there's at least three different modules with this chip, Adafruit, Pololu, and noname Chinese ones, and not all make all of the features of the chip available. Particularly the cheap ones from ebay omit the current control pins, but for testing purposes it probably doesn'...

All I can say is that it tested fine with ft motors at 9V. I'm far from being an expert, but personally I'd be worried getting close to the current limit, but not so much with the voltage. Also, 10.8V is the recommended value, the maximum supply voltage is 11.8V, so there's still some extra safety ...

@Jan: Thanks for the advice! The DRV8833 keeps popping up in my searches, but I see its max operating voltage is 10.8 V. Isn't this too close to 9V to be safe? The TB6612 is rated at 15 V max, isn't this chip a safer bet?

I was doing some tests with motor drivers and arrived to some interesting results. I have just very basic equipment (i.e. an old digital multimeter), but I made several measurements and the results seem to be consistent. For the power source I'm using a no-brand 9V 3A switching power adapter which I...

Dear Holger,

The forum also does not accept SVGs, so I've created a shared OneDrive folder with the SVG and a PDF:

https://1drv.ms/u/s!AoEOnU-XO9iY1PQzDvg6DWidBMEHyg

Hello ... turned out :-)well! Which font did you use for fischertechnik, especially the round "k"? And? Have you already chosen a number for the box? :-) Kind regards, fishfriend Holger Howey I suppose the old logo didn't use a typeface, it seems it was a custom design. So I drew the characters as ...

Yes, it was a pleasure to do it. And I must give credit where credit is due: The little model is made out of SketchUp parts I found on the web by Berserker. And the rendering was made in Blender by my son Leonardo.

MasterOfGizmo hat geschrieben: ↑

22 Mär 2021, 22:07

I frequently suggest to ft to cooperate with the community. Looks like that would even be an option when it comes to package design.

Absolutely, I can help with that.