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:


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

Page: games-sequence-01_en.htm
Date: 2018.09.23 06:39:41 (UTC+1)
Name: Oleg

Comment:
Game 'Number sequence' made with a length of 14 numbers. Difficulty: Middle

Thanks for nice games

Me: You're welcome!

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

Page: technics-machines-cnc-v2_1_en.htm
Date: 2018.09.20 05:58:35 (UTC+1)
Name: SandroH

Comment:
Hello Sir, what software name you use to create Gnome G Code.nc ?
Thanknu sir

Me: I am using Easel.

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

Page: technics-machines-plotter-cdrom_en.htm
Date: 2018.09.16 15:57:52 (UTC+1)
Name: Hemant

Comment:
Many thanks today I was able to complete this project. Its really fun to get the results at the end. Initially I was getting mirror image later i switched the y Axis pins and it started working. Let me know if you would like to see images.

Me: Some photos or a video would be nice. I definitely like that kind of feedback.

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

Page: response_en.htm
Date: 2018.09.11 19:47:06 (UTC+1)
Name: ugekje

Comment:
Comment to use of 2N7000: The threshold voltage, commonly abbreviated as Vth, of a field-effect transistor (FET) is the minimum gate-to-source voltage VGS (th) that is needed to create a conducting path between the source and drain terminals (Wikipedia)
I.E there is stil relativly high ON resistance. In the datasheet the lowest ON resistance (5 ohm) is at Vgs 10VDC. For information only.

Me: Totally right. Is this a comment concerning a special project of me that makes use of the 2N7000?


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

Page: contact_en.htm
Date: 2018.09.11 19:21:11 (UTC+1)
Name: Paulo

Comment:
Hello Norbet, I am trying to use the code provided in this link https://homofaciens.de/technics-base-circuits-computer-mouse_en.htm and it freezes in the "Setup" on the serial. Could you please tell me what could be wrong? I am using an Arduino micro to run the code.

Me: There is more than one code used in this chapter. What Arduino sketch are you exactly talking of?

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

Seite: games-memory-01_ge.htm
Datum: 2018.09.11 17:45:32 (UTC+1)
Name: webman

Kommentar:
Spiel 'Zahlenpaare' gemeistert in 47.657s. Schwierigkeitsgrad: Mittel

ganz nett

Me: Ganz gut.




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

Page: games-numbersystem-01_en.htm
Date: 2018.09.11 17:13:08 (UTC+1)
Name: TheLegend27

Comment:
Game 'Number systems' solved in 20.096s. Difficulty: Easy, Operation: Binary

..

Me: ..., too.




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

Page: technics-base-circuits-computer-mouse_en.htm
Date: 2018.09.11 11:31:48 (UTC+1)
Name: qwerty

Comment:
thanks mate i figure it out already. thank you for codes :)

now its working GREAT :))

Me: The most intensive learning is finding the solution by yourself - well done!




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

Page: technics-base-circuits-computer-mouse_en.htm
Date: 2018.09.11 11:14:38 (UTC+1)
Name: qwerty

Comment:
hello again

i did your coordinate project. its working fine. but i dont want to read delta x or delta y. i want to read actual position .for example this is on my comport monitor:
11000 delta X=-1  delta Y=1
11000 delta X=-1  delta Y=0
1000  delta X=0 delta Y=0
1000  delta X=0 delta Y=0
11000 delta X=-1  delta Y=2
11000 delta X=-1  delta Y=0

its getting zero when i stoped to movement. i want to read coordinates like on your optical encoder project. which part of codes should i change ?

Me:



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

Page: technics-base-circuits-computer-mouse_en.htm
Date: 2018.09.11 10:27:20 (UTC+1)
Name: qwerty

Comment:
hello Norbert..

i did that project and its working fine. but i want to read coordinates as fast as arduino can and also i dont want to read delta x or delta y , i want to read actual position (for example actual position =recent position + current position ). i checked up your codes but didnt understand anything . can u help me please ??


Me: I am very confident you understood something of the source code - which package exactly are you talking of? (I have written more than one example code). So read it again and ask more specific questions about it - that's the only kind of help I can offer.

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

Page: technics-machines-plotter-cdrom_en.htm
Date: 2018.09.04 22:06:52 (UTC+1)
Name: Fred

Comment:
Nice project !! Question: Will it work on a Raspberry P1 3?
Are There differences in GPIO between Raspberry Pi 2 B and 3 B?

Me: Thanks! It should work on all versions of the Raspbreey Pi without changing the GPIOs. WiringPi uses the same numbering scheme on all versions.



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

Seite: project_ge.htm
Datum: 2018.09.04 04:02:30 (UTC+1)
Name: Ingo

Kommentar:
Hallo Norbert,
dieser Kommentar ist ein Hinweis
zu einem Tippfehler

in : " (II.) Buttom Up
Zeile 6 ( mobile Version )

"...Schlüsselelement ZUN Schalten..."

ich mag dein Projekt.

:)

Me: Besten Dank, ist korrogiert.

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

Seite: technics-semiconductor-JFET_ge.htm
Datum: 2018.09.04 03:31:37 (UTC+1)
Name: Ingo

Kommentar:
Hervorragend !
Vielen Dank für die Mühe, die Sie sich in Ihren Darstellungen geben.
Ich habe etwas gelernt und es hat mir geholfen.

Vielen DANK

hochachtungsvoll

Ingo

Me: Bitte gerne!





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

Seite: games-calculator-01_ge.htm
Datum: 2018.08.28 12:58:54 (UTC+1)
Name: Doringer

Kommentar:
Spiel 'Rechenspiel' gemeistert in 25.672s. Schwierigkeitsgrad: Mittel, Rechenoperator: Addition

4x vertippt ! :-(

Me: ...auch die Hirn-Hand-Koordination kann man mit diesen Spielchen trainieren ;-)

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

Page: technics-base-circuits-encoder-disc_en.htm
Date: 2018.08.25 09:13:31 (UTC+1)
Name: ted spark

Comment:
I try to compile printer.c . But it was not successful. So i would like to know how to compile in proper way.

Me: If you don't tell me EXACTLY what you have done and what error messages appear, I can't offer you any help. Would also be nice what download package you are talking about.


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

Page: technics-base-circuits-encoder-disc_en.htm
Date: 2018.08.24 15:56:44 (UTC+1)
Name: gustavo nevarez

Comment:

an absolute encoder of 5 bits could be used in an arduino, to know the position in degrees of the movement of a lever and to control 2 relay outputs. the concept would be that turning the lever to the left activates an output of the relay and turning it to the right control the other relay output and know the position of the lever at each moment the movement would be in the range of 0 to 180 degrees.

Me: Is this comment meant as a question or did you just want to throw in your idea?

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

Page: technics-machines-3D-printer-Tronxy-X5-build-instruction_en.htm
Date: 2018.08.19 11:55:12 (UTC+1)
Name: Nate

Comment:
Thank you for the pictures it helped a lot getting my Tronxy x5 set up.

Me: You're welcome!

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

Seite: robospatium-controlstation-R10_ge.htm
Datum: 2018.08.18 19:44:32 (UTC+1)
Name: Pauly

Kommentar:
Hallo Norbert,finde deine Projekte echt toll und schau mir auch deine Videos auf Youtube an ,haste echt manch coole Idee :)
mach weiter so ...
..gz mfg Pauly

Me: Danke, ich mach' ja schon weiter. Löte gerade an einem neuen Roboter, der den Grundstock zu einem Umbau auf meinem Dachboden einläuten soll.

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

Seite: games-calculator-01_ge.htm
Datum: 2018.08.18 11:48:07 (UTC+1)
Name: Habrügge

Kommentar:
Spiel 'Rechenspiel' gemeistert in 1534585672.282s. Schwierigkeitsgrad: Mittel, Rechenoperator: Addition

Hm...48 Jahre...nicht schlecht fürs erste Mal :D

Me: Ist ein iOs spezifischer Fehler, den ich nicht nachstellen kann, da ich nur unverdongeltes Linux verwende ;-)




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

Page: technics-machines-cnc-v0-6_en.htm
Date: 2018.08.16 07:38:05 (UTC+1)
Name: Andrew

Comment:
The instructions for this are less detailed than the Cardboard CNC, but I like that because local supplies might be different. So, I am following your outline of the general design.

I'm using paper feed motors from inkjet printers. I've kept the first stage gears, which reduces the speed and increases the torque, and the 24V/2A PSU.

Next 'improvement' is to use plastic strips from a PET bottle as low-friction pads under the X and Y axes on top of the aluminium. Can't get 30mm castors easily.

Me: My machines are meant to inspire and share your ideas for improvements (thanks for your feedbak). If you run into trouble making a 1:1 copy, leave more comments which helps me to improve the documentation.

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

Page: technics-machines-cnc-v0-6_en.htm
Date: 2018.08.16 02:10:49 (UTC+1)
Name: Andrew

Comment:
Hello again,

I figured it out. The piece from fig.27 is used. It is a reinforcement at the inside top of the machine, and is visible in fig.32.

I have cut all of the MDF and I'm now ready to assemble it. I'm going to 'improve' a few things too.

For example, I am using M5 threaded rod. This has a pitch of 0.8mm, so I am making my encoder disc with 10 slots. This should give a resolution of 0.8/(10*4)=0.02mm, which is comparable to your M3 rod with 0.5mm pitch and 8 slots: 0.5/(8*4)=0.016mm.

Me: I knew I used all of the parts, but did not remember that one ;-) I have added a remark on figure 27, thanks for your feedback.
A rod with a larger diameter means a lot more friction! Your motors must have enough tourque to overcome that. Consider using the solution demonstrated on the mechanics of my CNC v3.2.

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

Page: technics-base-circuits-servos_en.htm
Date: 2018.08.15 02:45:04 (UTC+1)
Name: Richard R. Vasquez

Comment:
I'm sorry my thanks cannot do justice to express just how excellent I think of your Servo Video alone. I see a treasure trove of knowledge and experience that makes the world a better place. I hope you don't mind the internet traffic I'll be sending your way.

Joe McCarron says it way better than I do.

Yes, please keep up the GREAT work!

Sincerely, Richard R. Vasquez

Me: Thanks, I am keeping up and I am prepared for more Internet traffic ;-) For example my RoboSpatium will get an overhaul the coming months because I will use that special robot room to teach more about Physical Computing.

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

Page: technics-machines-cnc-T8_en.htm
Date: 2018.08.13 13:59:46 (UTC+1)
Name: Bobby

Comment:
Hi Norbert,

I am sorry for my previous comment. I will explain the problem.

The Arduino Uno that came with my machine did not work. So I used another one that I had. I installed the Grbl from the GearBest website but when I run gcode it moves a little then stops and makes a lot of noise. I tried changed the feed rate but that does not work. Did you have to install the grbl on the Arduino that came with it?
(I am usign GRBL Controller 3.6.1).

Any help would be appreciated.

Kind regards,
Bobby

Me: Okay. My T8 shipped with grbl v0.9g installed, the hardware shield is labeled Version 3.00. I have added the default values to my page (press F5 to refresh if you can't see the newley inserted text).
I extracted the hex file - flash it on your own risk:
http://homofaciens.de/download/T6-Factory.hex

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

Page: technics-machines-cnc-T8_en.htm
Date: 2018.08.12 23:02:59 (UTC+1)
Name: Bobby

Comment:
Hello,

I have bought the same T8 CNC but I can't get it to work.
Can you create a zip with the GRBL version and the GRBL settings?

Kind regards,
Bobby

Me: Sorry, but "I can't get it to work" is no meaningful description of what you have tried and what goes wrong. (Read the column contact). My machine worked with the settings out of the box. Give me more input...

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

Page: technics-machines-cnc-v0-5_en.htm
Date: 2018.08.12 22:35:20 (UTC+1)
Name: alberto

Comment:
disculpa la pregunta este proyecto puede funcionar con windows o solo con linux gracias profesor

excuse the question this project can work with windows or just with linux thanks teacher

Me: My software requires Linux to run. You can get e.g. Ubuntu for free.



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

Page: games-calculator-01_en.htm
Date: 2018.08.12 21:46:51 (UTC+1)
Name: Ion

Comment:
Game 'Calculation game' solved in 1534103197.891795s. Difficulty: Middle, Operation: Multiply

I was not at my best. It was  my first time... but seriously I don’t think it took that long.

Me: Looks like it is an iOS-only bug. Can't confirm that since I am living outside the wallet garden ;-)


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

Seite: games-numbersystem-01_ge.htm
Datum: 2018.08.11 12:27:36 (UTC+1)
Name: honla

Kommentar:
Spiel 'Zahlensysteme' gemeistert in 30.694s. Schwierigkeitsgrad: Leicht, Rechenoperator: Binär

noch besser

Me: Übung macht den Meister!

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

Seite: games-numbersystem-01_ge.htm
Datum: 2018.08.11 12:24:13 (UTC+1)
Name: honla

Kommentar:
Spiel 'Zahlensysteme' gemeistert in 40.14s. Schwierigkeitsgrad: Leicht, Rechenoperator: Binär

bin besser geworden

Me: Gut so!




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

Seite: games-numbersystem-01_ge.htm
Datum: 2018.08.11 12:21:27 (UTC+1)
Name: honla

Kommentar:
Spiel 'Zahlensysteme' gemeistert in 176.486s. Schwierigkeitsgrad: Schwer, Rechenoperator: Binär

Wahnsinn schwer

Me: So soll es sein.




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

Seite: games-numbersystem-01_ge.htm
Datum: 2018.08.11 12:14:08 (UTC+1)
Name: honla

Kommentar:
Spiel 'Zahlensysteme' gemeistert in 209.24s. Schwierigkeitsgrad: Mittel, Rechenoperator: Binär

waouu

Me: Jo.




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

Seite: games-numbersystem-01_ge.htm
Datum: 2018.08.11 12:01:10 (UTC+1)
Name: Yanga Honla

Kommentar:
Spiel 'Zahlensysteme' gemeistert in 88.024s. Schwierigkeitsgrad: Leicht, Rechenoperator: Binär

Cool

Me: Yes!

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

Page: technics-electric-motors-wound-stator_en.htm
Date: 2018.08.10 07:16:19 (UTC+1)
Name: aymn slah

Comment:
Very good work

Me: Thanks!

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

Page: technics-base-circuits-encoder-disc_en.htm
Date: 2018.08.10 04:14:56 (UTC+1)
Name: Dhir Along

Comment:
Greeting Sir
We had watch your video details on Youtube and it's help us almost 70% of our final project at diploma level. Our project included Power Window Motor, Driver Motor L293D, and rotary encoder type Re08A and Arduino Mega. Our supervisor need the power window to turn clockwise and Anti-clockwise 45 degree. We have tried your coding in the video that we have watched and modified it a little bit but still does not working. Could you give us some advice or any suggestion?

Me: I can try to help, but not with such a vague description of your project. Have a look at the column contact to get my mail adress (and so how to give me more input about your problem).

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

Page: response_en.htm
Date: 2018.08.03 13:57:16 (UTC+1)
Name: qwerty

Comment:
Really! can i use grbl??? but how ? do you have any project which used GRBL for control dc encoded motors ?
by the way many thanks for reply .

Me: Grbl works with step/direction commands. As said before, if your electronics does works with those commands, you can use grbl. Another thing I said is, I am working on it...

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

Page: technics-base-circuits-h-bridge_en.htm
Date: 2018.08.02 19:50:26 (UTC+1)
Name: Chirag

Comment:
Dear sir,
How to chek  mosfet  pulses  voltage gate and source in live  pcb.
Also we make any protect  instrument  for reparing smps three  phase 100amp smps module. For repairing

Me: You can check the gate voltage. If it's on HIGH, the MOSFET resistance is low, thus the voltage between source and drain must be (nearly) zero. Vice versa, if the gate voltage is (nearly) zero, the voltage across source and gate must be near the supply voltage.

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

Page: response_en.htm
Date: 2018.08.02 10:37:31 (UTC+1)
Name: qwerty

Comment:
hi norbert..
i build my own cnc maschine with 4 axis. but i dont know how to make a interface for it. im looking for softwares for making a interface. do yo have any advice for me? which software or programming language i should use? which one is easier for cnc projects? and also i did it with dc encoded motors so i cant use grbl..
by the way i build my own cnc wire bender project. waiting for help cause im stocked :)

thanks in advance

Me: As long as I don't know anything about the electronics you have build it's impossible to tell you what software might work. Of course you can built DC motors with encoder feedback that can be controlled by step/direction pulses and so grbl will work. I will build electronics for such DC motor control in the coming weeks/months. If you'd like to write your own code, simply use a programming language you already know about.
Read the column conntact if you'd like to get in details with me.


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

Page: technics-machines-cnc-v3-2-2_en.htm
Date: 2018.07.29 09:52:37 (UTC+1)
Name: your biggest fan

Comment:
thank you so much, you're a great man!

Me: You're welcome!

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

Page: technics-machines-cnc-v0-6_en.htm
Date: 2018.07.30 12:37:12 (UTC+1)
Name: Andrew

Comment:
Excellent. Now it's clear. Thank you. I have a 600x1800x18mm MDF panel. It's a standard size here. I wanted to be sure I could cut all the parts from this panel. It's a tight squeeze, but there is very little waste.

I have another question. The thin strip in the top left of the drawing of 5.7x60. Should I cut this shorter by 2x the panel thickness? Because it must fit between the two pieces 5.7x40 which are attached under the base panel.

Me: Another "Yes" and thanks. I have corrected the dimensions to 5.7x56.2cm (asuming 19mm chipboard as I have used). There is no waste, just pieces left to build something else ;-)

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

Page: technics-machines-cnc-v0-6_en.htm
Date: 2018.07.30 11:11:36 (UTC+1)
Name: Andrew

Comment:
Hello and thanks for the quick reply. I'm sorry, my message was confusing. I am building CNC V0.6 now. There are no part numbers on the cutting diagram here or in the CNC 0.6 PDF.


Me: Now I can clearly see what you mean ;-)
I have added a second triangle in the drawing as seen in Figure 6 - thanks for your hint!
The piece at the bottom left of Figure 27 is not used. It's just to demonstrate that those parts were cut from one rectangular piece (I guess that's why this part made it on the photo).

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

Page: technics-machines-cnc-v0-6_en.htm
Date: 2018.07.30 09:55:08 (UTC+1)
Name: Andrew

Comment:
Hello,

I built your cardboard CNC. It was fabulous, and I used it for a project for my students.

Now I am going to build this CNC for fun.

My first question: In the cutting drawing there is a triangle with 12x10 edges. Should I make two of these, as shown in fig.6? Also, there is a piece 15x15x7 at the bottom right of the drawing, and it appears in fig.27. What is it for?

Thanks!

Me: What is the part number of that 12x10 triangle in the drawing? I can't see a triangular part in Figure 6.
Same is for the 15x15x7 part - what's the part number in the drawing?

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

Page: technics-machines-cnc-v3-2_en.htm
Date: 2018.07.28 23:17:52 (UTC+1)
Name: Essa

Comment:
Hi Norbert

Thank you so much for this great work and details , I'm trying copy your work but on VB.net to work on system you don't like ... I know :) , and need more details about sending char ( A,a,S,s,g and h ) , you didn't mention about X and x keys hitting in ReadMe.txt , or in main menu ! .

Would you please give more details about them ..Thank you in Advance .

Best Regards

Me: I won't continue working on this version of my CNC software. Instead I am writing a new one processing Gcode. The meaning of the keys send to the Arduino is written in the source code of the Arduino.ino:
'a' is advance rate and should better be named feedrate. It's the pause between steps (=machine speed) while carving material.
's' reduces pause between motor steps, 'S' increases pause between motor steps
'x' and 'X' are returned if the homing switch of the x axis is open or not.
'g' and 'h' are experimental just to make the X axis spin with full speed.

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

Page: games-calculator-01_en.htm
Date: 2018.07.27 00:11:52 (UTC+1)
Name: VRMC

Comment:
Game 'Calculation game' solved in 20.122s. Difficulty: Middle, Operation: Multiply

Ohhh yeahhh

Me: I agree!

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

Page: index_en.htm
Date: 2018.07.26 15:19:19 (UTC+1)
Name: Dusseldorf Doug

Comment:
Nice box full of goodies from RS!

Me: Probably enough to build another soldier for a totally not evil robot army. Today I have done soldering to make my R11 move for the first time.

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

Page: games-numbersystem-01_en.htm
Date: 2018.07.26 13:58:19 (UTC+1)
Name: pman

Comment:
Game 'Number systems' solved in 37.093s. Difficulty: Middle, Operation: Binary

0x

Me: heavier



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

Page: games-numbersystem-01_en.htm
Date: 2018.07.26 13:50:12 (UTC+1)
Name: pman

Comment:
Game 'Number systems' solved in 17.192s. Difficulty: Easy, Operation: Hexadecimal

cute

Me: Better than before.



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

Page: games-numbersystem-01_en.htm
Date: 2018.07.26 13:43:22 (UTC+1)
Name: pman

Comment:
Game 'Number systems' solved in 22.336s. Difficulty: Easy, Operation: Binary

cute

Me: Thanks!


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

Page: technics-machines-cnc-v3-2-2_en.htm
Date: 2018.07.26 07:16:29 (UTC+1)
Name: seamiki

Comment:
Have you tried polishing the acrylic using a flame?
A rough cut edge looks brand new and pretty clear after passing over it with a propane torch.
Maybe can save some elbow grease.
Regards,
Seamiki

Me: Yes, flame polishing would indeed have saved me time and elbow grease and I did not think of that. Thanks for your hint, I'll keep that in mind!

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

Seite: technics-machines-3D-printer-Ender_ge.htm
Datum: 2018.07.22 12:04:05 (UTC+1)
Name: markus

Kommentar:
wieso lande ich regelmässig auf dieser seite wenn ich als suchbegriff ender 3 eingebe?
hier im titel steht ender drei
der beschriebene und abgebildete drucker ist aber der ender 2

Me: Im Titel steht "Ender 3D Drucker" nicht "Ender 3 3D Drucker", es liegt also von meiner Seite her kein Fehler in der Beschreibung.
Einen Ender 3 werde ich zu gegebener Zeit aber auch mal testen...

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

Page: technics-machines-cnc-v3-2-2_en.htm
Date: 2018.07.21 21:10:18 (UTC+1)
Name: seamiki

Comment:
I guess fresnel lenses are the best suited for this type of manufactoring.

Me: I'd say no, because you still have to polish the surface and that's more triky with all the groves of a Fresnel lens.

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