Die Suche ergab 166 Treffer

von fotoopa
16 Nov 2019, 16:37
Forum: Tipps & Tricks
Thema: PWR Control unit FT 505283
Antworten: 1
Zugriffe: 484

PWR Control unit FT 505283

I saw a question in the forum about the features of the power control. I just measured the signal myself: Result of a scope measurement on the 505283 Plus Power set from Fischertechnik. The intention was to measure the PWM signal. As a load I took a 44 ohm resistor which corresponds to a current of ...
von fotoopa
23 Okt 2019, 11:17
Forum: Rund um den 3D-Druck / 3D-Printing
Thema: 3 to 1 flex rail 3D print
Antworten: 4
Zugriffe: 5365

Re: 3 to 1 flex rail 3D print

Thanks, guys! I'm currently making more blocks for my new extra large marble run. For this I have a volume of 1.2m x1.2m x0.8m. The used parts are the 5 kits XL, the XXL, the dynamic_XM and multiple boxes 1000. The program will be developed for the TXT-Controller via Robopro. Almost everything goes ...
von fotoopa
22 Okt 2019, 14:38
Forum: Rund um den 3D-Druck / 3D-Printing
Thema: 3 to 1 flex rail 3D print
Antworten: 4
Zugriffe: 5365

Re: 3 to 1 flex rail 3D print

By mounting 3 blocks one after the other you get up to 7 flex lanes to 1 output. This way you can guide the many rails back to a central point. https://live.staticflickr.com/65535/48941531736_2cb869fd29_b.jpg Flickr: https://www.flickr.com/photos/fotoopa_hs/48941531736 3D file available on Thingiver...
von fotoopa
21 Okt 2019, 19:35
Forum: Rund um den 3D-Druck / 3D-Printing
Thema: 3 to 1 flex rail 3D print
Antworten: 4
Zugriffe: 5365

3 to 1 flex rail 3D print

To bring multiple flex rails together, this 3 to 1 output is fine.

Bild
Flickr HD: https://www.flickr.com/photos/fotoopa_hs/48937185157
Thingiverse: https://www.thingiverse.com/thing:3929474

Frans
von fotoopa
20 Okt 2019, 16:45
Forum: Tipps & Tricks
Thema: Expansion of the XXL marble run.
Antworten: 0
Zugriffe: 6640

Expansion of the XXL marble run.

I already had 5 kits XL construction boxes, but now I also bought the XXL version. Together with many other construction kits wants to make an extra large marble run again. What I'm showing now is just a small test setup of 2 new made modules where certain parts are obtained by 3D printing. The 2 ex...
von fotoopa
14 Sep 2019, 17:23
Forum: Tipps & Tricks
Thema: Double dice control with the TXT Controller
Antworten: 0
Zugriffe: 4928

Double dice control with the TXT Controller

Here is a small project for a double electronic dice with LEDs. The images speak for themselves, you have to be able to solder something but a real pcb is not necessary. I use holes in an epoxy print on a 2.54mm grid. The software used is the Robo pro and the program runs directly on the Fischer con...
von fotoopa
05 Aug 2019, 19:30
Forum: Tipps & Tricks
Thema: TXT-Controller controls my Nikon SE microscope.
Antworten: 5
Zugriffe: 93414

Re: TXT-Controller controls my Nikon SE microscope.

Here are some examples of the use of the TXT-Controller controlled microscope: I took samples from a water basin to find small water creatures. After collecting, I selected them under a bino and applied them to a preprepared glass. Then placed under the microscope with the 4X lens --> 40x magnificat...
von fotoopa
25 Jul 2019, 17:34
Forum: Tipps & Tricks
Thema: TXT-Controller controls my Nikon SE microscope.
Antworten: 5
Zugriffe: 93414

Re: TXT-Controller controls my Nikon SE microscope.

Glad to hear that you succeeded in seeing the real 3D images. There are not many users who have the opportunity to watch this on the right monitor or TV. If you don't use cross-view, the 3D glasses are always a bit awkward. Still, it really pays to use good 3D images with the right tools. It gives y...
von fotoopa
25 Jul 2019, 09:49
Forum: Tipps & Tricks
Thema: TXT-Controller controls my Nikon SE microscope.
Antworten: 5
Zugriffe: 93414

Re: TXT-Controller controls my Nikon SE microscope.

Wow, that looks amazing and such a nice practical use of fischertechnik interfacing to "real world" things doing something useful. A couple of questions: 1. Now here's my question... How do you "tell" the software stacker which parts of each image to use and which parts to throw away? Or does it fi...
von fotoopa
24 Jul 2019, 19:42
Forum: Tipps & Tricks
Thema: TXT-Controller controls my Nikon SE microscope.
Antworten: 5
Zugriffe: 93414

TXT-Controller controls my Nikon SE microscope.

I've been working on my microscope project for several months. The project is in its final phase. The aim is to control a converted Nikon microscope unit via RoboPro. A Nikon D7100 camera with a tube lens 70-200mm is mounted on the microscope. On the microscope itself, different lenses can be mounte...
von fotoopa
22 Jul 2019, 15:38
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

vleeuwen hat geschrieben:+/- 2k2 ohm.
But with only the 10 kOhm from the level shifter it is working too but the form is in that case not so beautiful.
Thanks!
That's why I placed 1K5 and I don't have any problems with this value.
von fotoopa
22 Jul 2019, 15:15
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

vleeuwen hat geschrieben: What I also notice is the importance of the right total of Rp's in relation with the total of capacity of the I2C connection lines+ devices.
Which Rp value do you use on the lines now?
von fotoopa
21 Jul 2019, 19:17
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

To run your I2C in 100 KHz mode: - powerup the TXT - Start RoboPro program with 100KHz mode As long as the program is running, the device remains in 100 KHz mode. As soon as you stop the program once you lose this mode and all subsequent program starts are at 400 KHz. You need a full powerdown from ...
von fotoopa
21 Jul 2019, 14:37
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

After the sending of a byte and the ACK-protocol the master can also keep the SCL low before he start to receive or to transmit the next byte. However this is not the same as clock-stretching. General speaking the master can make every clock cycle different, in table 16 there is almost no maximum l...
von fotoopa
21 Jul 2019, 09:58
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

A clock stretching will always be initialized by the slave and not by the master. This can be after a byte or after a bit (only standard and fast mode). It will slow down the clock by making the Tlow longer (SCL); the Thigh (data on the SDA is valid) will be unchanged. When the master is able to de...
von fotoopa
20 Jul 2019, 20:15
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

Ik heb nog wat metingen gedaan op mijn huidige I2C microscope sturing. De master gebruikt enkel een strechting bij een write cyclus tussen het adres en het lezen van de eerste data byte. Bij een read I2C is er nooit een clock strechting. De stritching zelf bij een write is niet constant maar verande...
von fotoopa
20 Jul 2019, 13:35
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

Ja dat klopt. Omdat de master de clock genereerd kan hij de clock ook stretchen tussen 2 bytes. Dat doet hij tussen het adres en de eerste data. Ik vermoed dat de TXT dan wat tijd nodig heeft om de data beschikbaar te stellen. De slave moet in dit geval ook rekening houden met een uitgestelde clock....
von fotoopa
20 Jul 2019, 11:35
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

Ik begrijp de vraag voor engels maar het vraagt zoveel tijd om de juiste formulering in een andere taal te schrijven. De master maakt een kleine clock stretching tussen de eerste byte (adres) en de volgende data. Die is niet heel lang. Mijn slave driver ondersteunt dit. Bij alle andere transfers zie...
von fotoopa
20 Jul 2019, 09:48
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

Wat is die TXT-Controller soms lastig! Mag ik het even in het nederlands schrijven. Mijn voorgaande metingen duiden idd op 100 Khz en 40 Khz speed. Blijkbaar bekom je dit vanaf het ogenblik dat je de speed 1 maal gewijzigd heb in Robopro. Laat je die origineel staan op 400 Khz dan bekom je idd de 40...
von fotoopa
19 Jul 2019, 19:16
Forum: Robo Pro / Computing / Software
Thema: TXT and I2C bus speed
Antworten: 23
Zugriffe: 26170

Re: TXT and I2C bus speed

Normally I only use the 400 Khz mode, but I have set the code to 100Khz for the measurements. The measured high and low clock signals are: For 400Khz : 4.94 usec and 5.06usec --> periode 10 usec For 100Khz: 763.5 usec and 1735 usec --> periode 25 usec For the first time I see that my I2C code in the...