Leave a comment:
Dear Spammers and Trolls: All comments are checked by myself before publishing!
The manual inspection is why it takes some time until your text appears in the comment section (as long as it passes my inspection) - be patient...

I don't answer comments by mail!
Note the rules and my mail address in the column contact!

Norbert

Name:
Comment:
Formular:


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Page: technics-machines-3D-printer-Tronxy-X5_en.htm
Date: 2018.12.13 21:06:22 (UTC+1)
Name: Peter West

Comment:
Can I ask - you list that an M8 threaded bar is needed for the new parts. Did you change the original threaded bar - it seems to be a different thread to M8 (looks more like an engineering screw). Won't the motors therefore advance the modified parts at a different rate to the original plate mounting - or am I missing something?

Me: As demonstrated in the video you must adjust the stemps per mm of the Z axis through the printer menue to adapt the firmware to the lower pitch of the M8 threads.

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Page: technics-machines-plotter-cdrom_en.htm
Date: 2018.12.14 21:15:10 (UTC+1)
Name: Andrew

Comment:
Norbert, I used the c program for the plotter, printer, miller on https://www.homofaciens.de/download_en.htm#PlotterCDROM. The one from the zip file works perfectly. The crashes are due to me trying to use incompatible file formats. Your instructions for Libreoffice work perfectly. I now have the machine working well, thanks for your support, it has been fun to learn. You are very clever for having developed this!

Me: Thanks for pointing out what went wrong. Thant might help people that stumble over the same error.
There is nothing better than exploring successfully what makes a machine work or not work - congratulation on making your's do what it should do.

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Seite: technics-electrochemistry-periodic-table-content_ge.htm
Datum: 2018.12.14 19:58:19 (UTC+1)
Name: Troll

Kommentar:
Lieber Nobbi,

Krypton und Zenon haben als Edelgase wie Helium (unten) keine Elektronennegativität.

Me: Doch, auch nach der von mir verwendeten Pauling-Skala wird Krypton und Xenon als den einzigen beiden Eldelgasen eine Elektronegativität zugeordnet:
https://de.wikipedia.org/wiki/Elektronegativit%C3%A4t#Pauling-Skala
Für die anderen Edelgase ist es bislang einfach nicht gelungen, entsprechende Verbindungen zu erzeugen und den Wert per Experiment zu bestimmen.





----------------------------------------------------

Seite: technics-machines-cnc-v3-2-2_ge.htm
Datum: 2018.12.13 19:25:42 (UTC+1)
Name: Guido

Kommentar:
Hallo Norbert,
also erstmal gefallen mir deine Projekte sehr gut.
Ich wollte mal nachfragen, wann es mit der Dokumentation  der CNC V3.2.2 weitergeht..? Interessant wären so die ganzen Abmessungen und die Ausführungen der Linearführungen.

Die Dokumentation der CNC V2,0 war übrigens hervorragend..

Schöne Grüsse aus dem Ruhrgebiet,

Guido

Me: Da rührst du in einer offenen Wunde ;-)
Ich bin gerade dabei, 3mm-Aluplatten mit der CNC zu bearbeiten und dabei habe ich noch so die ein oder andere Schwachstelle gefunden, die ich am korrigieren bin. Wenn alles läuft, folgt die Dokumentation. Sollte noch in diesem Jahr so weit sein...

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Page: technics-machines-3D-printer-tronxy-p802_en.htm
Date: 2018.12.12 17:49:47 (UTC+1)
Name: Peter

Comment:
Hi - very helpful report. It helped me decide for this printer at actual unbeatable price on ebay with only 65€. I bought one at once with filament mixed and two other colors. Also spare nozzles from the same producer.
thanks again
Peter

Me: The low price and the fact that you can tinker a lot with the mechanics of this prusa i3 stule printer are for sure good reasons to buy one.

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Page: technics-mechanics-airresistance-experiments_en.htm
Date: 2018.12.13 13:12:11 (UTC+1)
Name: Goran

Comment:
Give me equation on wind tunneltunnel how to make

Me: What equation do you mean? They are numbered for good reasons.

----------------------------------------------------

Seite: contact_ge.htm
Datum: 2018.12.12 02:07:23 (UTC+1)
Name: Dominic

Kommentar:
Hallo Norbert,

es ist still um dich geworden, alles ok? Viel zu tun ?

MfG
Dominic

Me: Ja, danke der Nachfrage. Habe soeben auf der Startseite gepostet, womit ich so beschäftigt bin (eventuell die Seite aktualisieren, um den neuen Post zu sehen).

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Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.12.11 14:50:22 (UTC+1)
Name: Peter West

Comment:
Thanks again for your input.
The X stop started playing up again and on investigation I found the the support that holds the filament nozzle, fan and adjustable stop plate has cracked and is moving back on the bearing when it hits the stop - so next time it tries to home the carriage does not activate the stop - if that makes sense.
I've notified the supplier asking for a replacement and in the meantime temporarily secure the broken piece with some tape to stop it moving.

Me: When buying cheap printers, you will become an engineer over time. To me that's part of the fun ;-)


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Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.12.11 01:56:40 (UTC+1)
Name: Peter West

Comment:
Thanks for the glass tip.
Would that be a special glass (as seen on ebay - Borosilicate) or just a plain glass 3mm sheet of the right size?

Me: Borosilicate is definitely the better option due to the clearly lower thermal expansion of that material.

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Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.12.10 22:19:16 (UTC+1)
Name: Peter West

Comment:
All appears to be well now.
I disconnected and checked the wiring and when I reconnected it all worked OK for my first print with no problems.
I'll get more tests done over the next few days - then start printing your mods.
My final issue (I hope) is the blue self adhesive sheet for the table. It is creased and doesn't stick flat which I guess may cause issues. Also, prints are not easy to get off it.
Do you use this - are there alternatives that you could recommend that are easily available?

Me: Thermal expansion flattens the blue tape when heating the print bed. However, the blue tape has to be renewed every now and then depending on what you are printing.
Mounting a glass tile on the print bed with clamps is a common, permanent solution. You can either print on the glass directly or coat it with a glue stick or hairspray.

----------------------------------------------------

Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.12.08 02:31:21 (UTC+1)
Name: Peter West

Comment:
Thanks for the help - I changed the Black/green - works a treat and during Auto Home the Z axis works seamlessly - however the X and Y stepper motors are making a terrible juddering noise when they reach the end stops on auto home.
They hit the end stop and judder loudly for a while then stop. The filament nozzle seems to be in the right position when Auto Home finishes (back right hand corner area of the plate) but the noise from the X and Y steppers worries me.

Any thoughts?

Me: Your X and Y end stops don't work or you have pluged them wrong on the mainboard. Check if the solderings of the cables under the shrinking tube of the switches are okay. You can also use a multimeter dialed to continuity to check the switches.

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Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.12.02 12:59:34 (UTC+1)
Name: Peter West

Comment:
The problem was the bore in the bearings shown in the top corners of your figure 4 were smaller than 8mm - so the 8mm rods would not fit.
A contact at the local college where they have an engineering workshop managed to re-bore them - so all is now well.

I do have another question though - you seem to have moved the Z-axis motor to the bottom. I assume you had to re-wire the connection so it travelled in the right direction - was this the case, and if so which wires had to be moved.

Thanks

Me: You must swap the cables of one phase (e.g. black and green cable) at the plug to change direction of rotation. For my mod I am now using three motors switched in series (see figure 10).

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Page: contact_en.htm
Date: 2018.12.07 03:56:26 (UTC+1)
Name: Dave

Comment:
Hi Norbert,

As stated before, I am using the Michelangelo and the spool holder is the filament spool holder you provided for the printer. Thanks a lot.

Dave

Me: ...and did you try to adjust the brim or skirt distance from the filament holder to a lower value (e.g. 1mm) in your slicing software as I suggested?

----------------------------------------------------

Seite: support-donation_ge.htm
Datum: 2018.12.06 15:00:57 (UTC+1)
Name: Norbert

Kommentar:
Ich bin heute zufällig auf diese hervorragend aufgebauten Seiten gestoßen. Da steckt sehr viel Arbeit drin. Ich habe mich daher spontan entschlossen, 20€ zu spenden. Danke für diese hervorragende Arbeit und weiter so!
Viele Grüße aus der Bayerischen Rhön (Nähe Kreuzberg)
von Norbert Krämer

Me: Schön, wenn man bemerkt, dass hier Arbeit drinnen steckt;-)
Vielen Dank auch für die Spende, ich bin momentan dabei mit meiner CNC v3.2.2 eine Version von meinem Rover R11 aus Alu anzufertigen - ichwerde das Geld in Rohmaterial investieren.
Die fehlenden Bilder habe ich hochgeladen, vielen Dank auch für diesen Hinweis.




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Seite: games-calculator-01_ge.htm
Datum: 2018.12.06 07:56:32 (UTC+1)
Name: Mathias

Kommentar:
Spiel 'Rechenspiel' gemeistert in 32.807s. Schwierigkeitsgrad: Mittel, Rechenoperator: Addition

Cooles Spiel!

Me: Danke!

----------------------------------------------------

Page: contact_en.htm
Date: 2018.12.05 14:23:40 (UTC+1)
Name: Dave

Comment:
Hi Norbert,

Thank for the great review. I have troubles with ultimaker cura for your spool holder print. When I tried to slice the model, it says my print area is too small. However I have already set my print bed to 150mmx150mmx150mm. I am not sure what other setting I need specify. Ultimaker cura does not have any Michelangelo settings. Thanks for the help.

Dave

Me: Would be nice if you'd tell me what printer and spool holder you are talking of...
Maybe you need to reduce the distance of the skirt or brim around your print object.

----------------------------------------------------

Seite: technics-computer-introduction_ge.htm
Datum: 2018.12.05 10:18:07 (UTC+1)
Name: Christian Haider

Kommentar:
Bin natürlich angetan von der Vielfalt der Themen und davon, das sich da einer hinsetzt und wirklich sein umfangreiches Wissen (mirt tollem Motto) weitergibt.
Ich selbst bin schon über 60 und hab mit dem C64 1983 begonnen... und auch einige "Projekte" gemacht.
Meine Empfehlung: LDmicro (z. B. für PIC 16f877) kostet nichts bzw. Profilabexpert (ca. € 100) sind Programmiersoftware mit denen ich mich inzwischen immer wieder beschäftige und glaube, daß sie hier einmal genannt werden sollten.

Me: Den C64 habe ich in meiner Ausbildung kennen gelernt - weckt alte Erinnerungen...
Microcontroller gibt's wie Sand am Meer, welchen Typ man nimmt ist jedem selbst überlassen, Vor- und Nachteile haben alle irgendwo. Profilabexpert ist Closed Source und "Windows only" und somit irgenwie in den Neuzigern des letzten Jahrhunderts verankert und hängen geblieben - irgendwann sollte man sich von den alten Socken trennen ;-)
FOSS gehören Gegenwart und Zukunft, daher verwende ich auf meinen Seiten nur Programmierwerkzeuge basierend auf Freier Open Source Software.


----------------------------------------------------

Page: technics-base-circuits-encoder-disc_en.htm
Date: 2018.12.03 10:37:31 (UTC+1)
Name: Athar Kaludi_Pakistan

Comment:
Found Arduino connected - Now how to run your program
How it will run motor
Instruction
What to press on key board to run motor

Me: Follow the instructions in the readme.txt. Once again: What download package (name of zip file) are you using and what is the name of the subfolder in that package? I am no mentalist.

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Page: technics-machines-plotter-cdrom_en.htm
Date: 2018.12.02 23:52:34 (UTC+1)
Name: Andrew

Comment:
Norbert,
Thank you for asking about file versions, that must be the problem.
I am running Raspbian 9, and I was using cdrom-plotter.c version .1. I found version .5 in the zip files with the images. I tried using .5 but it seems the mapping of the GPIO's is different.
In version .1, it was setup as GPIO [6] = 13. In .5, I see "#define X_stepper03 2" for example. Does this mean that stepper03 is mapped to wiringpi 2, which is P1-13?

Thank you for your continued help!
Mit freundlichen Grüßen

Me: In what zip-file did you find a .5 version of plotter-cdrom.c? Not in the plotter-cdrom.zip of the download page.
The mapping of the GPIOs should not matter with the wiringPi library I am using, so use the pin header numbers of the circuit drawing (P1-..), no matter what Pi revision you have.
Did you reinstall Raspbian on the SD card to get a fresh installation? That might cause your crashes.



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Seite: technics-electrochemistry-atoms_ge.htm
Datum: 2018.12.02 18:59:55 (UTC+1)
Name: Troll

Kommentar:
Lieber Nobbi,

was ist ein Orbital?

Me: Einfach gesagt der Bereich in dem sich ein bestimmtes Elektron in einem Atom aufhalten kann.

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Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.11.30 15:50:11 (UTC+1)
Name: Peter West

Comment:
I bought one and it arrived this morning.
Unfortunately my build was halted as soon as I tried to assemble the rods into the side bearings - the bore of the bearings is too small and the rods won't fit. They do fit all the other bores - such as the gears and supports for the print head - it's just the bearings that are too tight and I have no way of re-boring the centres.
Have to wait now for the supplier to sort it out - which could take some time.

Me: Would be nice to have a photo of the parts that don't fit to make me see whats wrong and to give you an advice of how to fix it eventually. Have a look at the column contact to get my mail address.

----------------------------------------------------

Page: technics-machines-plotter-cdrom_en.htm
Date: 2018.11.30 02:15:52 (UTC+1)
Name: Andrew

Comment:
Thank you Norbert for all your help! I have successfully been able to move the X and Y axis and pen servo using the menu options in the program. The last problem I am having is uploading a file. When I select the file (files I got from PLOTTER-CDROM.ZIP), the program crashes, and the terminal window closes. All .svg and the .bmp files cause the program to crash. Any final advice you can offer would be appreciated.

I've learned so much so far, thank you!

Mit freundlichen Grüßen

Me: Did you use a fresh installation of Raspbian (waht version)? What error message appears?

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Page: robospatium-controlstation-R11_en.htm
Date: 2018.11.28 20:12:00 (UTC+1)
Name: robverwer

Comment:
Nice work the interaction is a phenmena. BUT...I hoped I could drive around in an area...but I am sure this will be possible in the future..or it already is and I am not (yet) quite getting it...Thanks for your contributions I have been following for quite some years...I will use (and) post them..

Rob Verwer (Netherlands)

Me: You can drive around with Rover R11. Click on the arrows of the yellow or green frame around the live picture. Top arrow drives forward, bottom arrow goes into reverse and left or right turn the rover around.



----------------------------------------------------

Page: technics-machines-cnc-v3-2-2_en.htm
Date: 2018.11.26 00:06:13 (UTC+1)
Name: Mario

Comment:
Hello!

I'm thinking of building simmillar CNC machine and I'd like to us MDF or chipboard board for the frame. Can you say more about rigidity of wooden frame vs steel frame? Is wood rigid enough for cutting Alu.?

What do you think limits the precision of this machine the most? (inaccuracy of threaded rod, flexing of the frame/linear guides, tool mount or something else?)

Thank you for your wonderful work!

Me: I am currently testing this machine by cutting parts for a new robot from 3mm aluminum. It doesn't work bad after some minor modifications on the linear drives. To me there is no noticeable difference in rigity between the steel frame and the 18mm chipboard construction in practice.
The relative posistioning is in the range of clearly less than 100 microns, the absolute positioning is of course caused by the overall build quality of the mechanics as well as the inaccuracy of the threaded rods, but its definitely not bad for cutting useful parts (for sure better than hand made).
I will talk about all that stuff in a coming video that I am currently recording - stay tuned!

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Page: robospatium-controlstation-R11_en.htm
Date: 2018.11.24 03:30:36 (UTC+1)
Name: SALVATORE

Comment:
Dank dir habe ich Lust bekommen mir ein Rasperry pi zu kaufen, obwohl ich mit der materie gar nicht auskenne.
Danke für deine Videos in Youtube

Me: Niemand wurde mit dem Wissen über Computer geboren - das ist alles angelernt ;-)
Viel Spaß beim Experimentieren!

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Page: technics-base-circuits-encoder-disc_en.htm
Date: 2018.11.21 10:42:11 (UTC+1)
Name: Athar Kaludi_Pakistan

Comment:
Under folder printer_motor I seen code
in which there is option where serial port is waiting for user input in end it checks against user input
i am talking about this code section.

what to enter at Serial input - I am talking about ASCII input from 13 to 20

Input is waiting from user - otherwise it just write X on terminal ? What valid input is accepted
I refer to Figure 8 on this web page on  my left

Me: Than means your computer can't find the Arduino. Start yopur computer with the Arduino not pluged in. Open a Terminal and type:
ls /dev
Now plug in your Arduino and type:
ls /dev
again. There should be one more entry in the list. What's the name of it?



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Page: technics-base-circuits-encoder-disc_en.htm
Date: 2018.11.20 20:21:57 (UTC+1)
Name: Athar Kaludi_Pakistan

Comment:
Very helpful information to understand Encoders and Motor control.
I programmed Rotary encoder Printer Motor code and uplaod in Arduino - connected all setup motors and L298 as described.

What are commands to send by Serial port ?
Did you mention any where - what are commands from 13-20 in read Byte
How to move motor ?

Me: What program exactly (download package and subfolder) are you talking of? I have written more than just one example.

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Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.11.20 12:46:28 (UTC+1)
Name: Peter West

Comment:
I was interested to see how the parts are put together with the bearings and connecting the bed support to the square tube and screwed thread.
It would probably become clearer if I had the printer and printed arts in front of me - but as yet I have not purchased one.
Within my budget I was looking at various options having discounted this one due to reports of bed 'wobble' - until seeing your video review and your hack to stabilise it - then I more or less decided on this one.

Me: With the mods the printer has a solid cube frame and a sturdy bed. Considering the price, the results are okay. It's a machine for tinkerers like me ;-)
You had a look at my Review page of the Tronxy X5 including large pictures of the modifications?
If you stumble when doing the mods, simply drop a message and I'll try to help out of the trouble.

----------------------------------------------------

Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.11.20 00:40:31 (UTC+1)
Name: Peter West

Comment:
Very useful pictorial instructions.

Is there any possibility that you could post more detailed photos of the z-axis mod - the actual construction is not very clear in the article about it.

Thanks

Me: Would be nice if you tell me exactly what information you are missing. With the printed parts and the cut iron bars in front of you, it should become clear (at least I got feedback from people that managed the conversion with no problem).

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Seite: technics-base-circuits-encoder-disc_ge.htm
Datum: 2018.11.19 19:20:11 (UTC+1)
Name: roland

Kommentar:
Hallo Norbert, die Schaltung sieht folgendermaßen aus:
Arduino Leonardo
16*2 LCD (8,9,10,11,12,13)
2 Gabellichtschranken an Pin 2 und 3
L298N enable Brücke gesteckt. IN1 an Pin 5 und IN2 an PIN 6, DC-Motor mit Sensorscheibe 15 Zähne.Die Software mit der Interrupt-Pulszählung funktioniert.
Die Software Stepper-Motor mit der commands-host geht nur so, dass der Motor in eine Richtung dreht und  bei wiederholter Richtungstaste auch auf Dauerbetrieb läuft. Die andere Taste bewirkt max. Stillstand. mf

Me: Was ist "die Software mit Interrupt Pulszählung"? Welche "Software Stepper Motor mit der commands-host"? Ich habe mehr als zwei Programme veröffentlicht. Eine genaue Angabe, auf welches Download-Paket (Name der heruntergeledenen Datei, welches Programm aus dem Paket) du dich beziehst ist nötig - meine Fähigkeiten als Gedankenleser sind seeeehr begrenzt. Richtungstaste habe ich bei meinen Beispielen nie verwendet (glaube ich zumindest). Ich habe immer noch keine Bilder von dem was du gebastelt hast...




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Seite: technics-base-circuits-encoder-disc_ge.htm
Datum: 2018.11.19 07:50:18 (UTC+1)
Name: Roland

Kommentar:
Hallo Norbert,
ich habe den Aufbau nach Abb. 5 nebst der zugehörigen Software nachempfunden und leider funktioniert das nicht so recht. Da die H-Brücke mit nur zwei Signalen angesteuert wird (so meine Lesart) müssten diese Leitungen einen Festpegel haben um jeweils die gewünschte Drehrichtung zu erreichen. Nach der Software gibt es einen DIR und einen PWM Ausgang. Wie genau werden die dann auf die H-Brücke gelegt? Ich komme da nicht wirklich weiter. mfg Roland

Me: "Es funktioniert nicht so recht" ist keine Fehlerbeschreibung mit der ich dir weiter helfen kann (viiiiel zu ungenau).
Welcher der beiden Eingänge der H-Brücke als PWM Eingang gewählt wird ist egal, der zweite wird somit zum DIR Eingang. Abbildung 5 ist auch nur ein Foto, kein Schaltplan. Was genau hast du aufgebaut, welchen Microcontoller verwendest du usw. usf.
Bilder deiner Schaltung wären hilfreich. (siehe Rubrik Kontakt).

----------------------------------------------------

Page: echnics-base-circuits-multivibrator_en.htm
Date: 2018.11.10 03:31:50 (UTC+1)
Name: Lucky

Comment:
Please help me,  i want to make a flip flop with 4 input and 4 output,  when one is on state rest goes off automatic.

_Me: You could switch a 5 input OR gate in front of the reset inputs of your flip flops and connect four of each inputs with the output signals and use the remaining to reset with an external signal.


Can you please make a circuit diagram for me.

Me: It's up to you to try first to make one, because I am not the man that does all your work for free ;-). I will tell you what's eventually wrong with your circuit.

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Page: technics-base-circuits-multivibrator_en.htm
Date: 2018.11.15 17:05:15 (UTC+1)
Name: lucky

Comment:

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Seite: technics-machines-cnc-v3-2-2_ge.htm
Datum: 2018.11.14 15:03:24 (UTC+1)
Name: Troll

Kommentar:
Lieber Nobbi,

warum benutzt du eigentlich statt der Pulsweitenmodulation keinen Transformator?

Gibt es für die Simatiken eigentlich keinen "ordentlichen" Ausgang oder ist das mit der großen Öffnung so gewollt?

Me: Ein Transformator funktioniert nur bei Wechselspannung, Ich verwende aber Gleichspannung.




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Seite: technics-machines-cnc-v3-2-2_ge.htm
Datum: 2018.11.14 14:48:38 (UTC+1)
Name: Troll

Kommentar:
Lieber Nobbi,

viele Grüße aus dem uns beiden wohlbekannten Niedertiefenbach nach München.

Me: Grüße zurück aus der Bergstrasse, Ich bin heute Morgen wieder gelandet!




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Page: robospatium-controlstation-R11_en.htm
Date: 2018.11.13 00:12:01 (UTC+1)
Name: Martin

Comment:
Wow, was für ein cooles Projekt! Danke das du dein Wissen mit uns teilst.

Me: Bitte gerne!





----------------------------------------------------

Seite: technics-machines-v-plotter_ge.htm
Datum: 2018.11.11 20:33:32 (UTC+1)
Name: Paul

Kommentar:
Vielen Dank für das Projekt.
Dank der präzisen Anleitung und der ausreichenden Software konnte ich mit 13 Jahren den Plotter selber bauen.
Nach anfänglichen Problemen klappt der V-plotter. Jedoch habe ich ein kleines Probleme. Der Plot ist immer verzehrt. Könnte es an 2 unterschiedlich starken Schrittmotoren liegen,obwohl ich zwei identische Motoren habe?
Vielen Dank im Voraus

Me: Ein Foto von der Art der Verzerrung könnte helfen, das Problem einzugrenzen. Meine Mailadresse steht in der Rubrik Kontakt.


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Page: technics-machines-cnc-T8_en.htm
Date: 2018.11.11 11:41:41 (UTC+1)
Name: Gerhard

Comment:
Hello Norbert
I have rebuilt the machine and the control works perfectly. I would now like to change the speed of the spindle motor by software. How should I connect this to the shield? Greetings, Gerhard

Me: Do you have a driver board for your spindela that works with PWM input signals? So you could try to connect the input of your motor driver with "SpnEn" on the shield.

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Page: technics-base-circuits-multivibrator_en.htm
Date: 2018.11.10 03:31:50 (UTC+1)
Name: Lucky

Comment:
Please help me,  i want to make a flip flop with 4 input and 4 output,  when one is on state rest goes off automatic.

Me: You could switch a 5 input OR gate in front of the reset inputs of your flip flops and connect four of each inputs with the output signals and use the remaining to reset with an external signal.

----------------------------------------------------

Page: technics-machines-plotter-cdrom_en.htm
Date: 2018.11.09 14:47:10 (UTC+1)
Name: Andrew

Comment:
Norbert, I am starting to wire up my Pi, and I am having some difficulty understanding what is meant by your GPIO connections to the bridges. In your graphic you say "Bridge X Input A GPIO 2 = P1-13". What is meant by the "P1-13"? I understand Bridge X Input A goes to GPIO pin 2, correct? (I have a raspberry Pi 2 B+), It looks like yours is a Pi 1? According to this https://goo.gl/TDe1Jm , GPIO 2 on Pi 1 is Pin 3.
Mit freundlichen Grüßen

Me: It's the pin header Number. Number P1-1 is the +3.3V Pin, P1-2 the +5V pin and so on. Take this scheme for the wiring, since there are different GPIO numberings for the Raspberry, which might confuse you. The numbering is identical for all Raspberry models, no need for changes.
See all pin numbers at my chapter about the Raspberry Hardware pins

----------------------------------------------------

Page: technics-computer-arduino-uno_en.htm
Date: 2018.11.09 03:02:53 (UTC+1)
Name: irwin Lopez

Comment:
Hello,
I am trying to Control the position of a 3.5kW motor. Can you help please. I need to kn =ow how to control it using PID control system. Is there anything you recommend such as books, websites. I will do every exercise you do, Thank you very much,

IL

Me: Read my chapters about rotary encoders, optical sensors or H bridges to get the basics:
Encoder disc
Transmissive optical sensors
PID
H bridge

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Page: contact_en.htm
Date: 2018.11.08 14:44:53 (UTC+1)
Name: qassimam

Comment:
Thank you
the servo rotates clockwise two and a half cycles and two and a half cycles counterclockwise so it is not possible to control the drawing pen What should I do ( note that the servo type is (Tower pro micro servo 9g  sg90)) Thank you

Me: What about pictures of your circuit or a video as I told you before? I can't help you otherwise.

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Seite: index_ge.htm
Datum: 2018.11.08 20:29:21 (UTC+1)
Name: Troll

Kommentar:
Lieber Nobbi,

wo gibt es die "leeren" Platinen?

Me: Die nennen sich "Europlatinen" oder "Lochrasterplatinen" und gibt's bei allen Elektronikhändlern, soch auch bei RS Components.




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Page: games-numbersystem-01_en.htm
Date: 2018.11.07 19:51:28 (UTC+1)
Name: lol

Comment:
Game 'Number systems' solved in 16.32s. Difficulty: Easy, Operation: Binary

too easy lol

Me: Switch to level "difficult".


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Page: games-numbersystem-01_en.htm
Date: 2018.11.07 19:51:16 (UTC+1)
Name: German

Comment:
Game 'Number systems' solved in 39.804s. Difficulty: Easy, Operation: Binary

German words

Me: Die verwende ich meistens.




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Page: contact_en.htm
Date: 2018.11.07 09:11:22 (UTC+1)
Name: qassimam

Comment:
hi
Thank you for your attention, I mean (Plotter CDROM), the  z-axis Because the servo did not work . I have the Raspberry by 3 and i set the orange color from the servo on pi- 3 and red to + and black to -  it did not work please help me to find out the reasons and find solutions thank you

Me: What about some photos of your circuit? I can't say what goes wrong if I can't see anything...




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Page: contact_en.htm
Date: 2018.11.02 22:16:17 (UTC+1)
Name: qassimam

Comment:
Hi
Can I change servo motor to
stepper Motor Thanks

Me: Change what servo motor with what stepper motor - what project or machine do you mean?!?

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Page: technics-metrology-temperature_en.htm
Date: 2018.11.01 21:20:28 (UTC+1)
Name: Hatoon

Comment:
Mercury thermometer can not measure temperatures above 356.73 c ...why not ??

Me: It boils at that temperature under normal conditions.

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Seite: contact_ge.htm
Datum: 2018.10.31 21:50:26 (UTC+1)
Name: Demon

Kommentar:
Hallo und guten Abend Norbert,

gibt es evtl. zu den Modifikationen des Tronxy X5S eine detailierte Bauanleitung, ich sehe die Teileliste, den Download für die 3D-Drucker DATEN, aber gibt es noch hier weitere Anleitung dazu ?

Gruß

Me: Welche Infos fehlen dir denn noch? Ist doch alles nicht sooo kompliziert, wenn man die Teile vor sich liegen hat.

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