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Norbert

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.10.03 14:48:08 (UTC+1)
Name: Wikly

Comment:
Hello dear Mr. Norbert.
Please tell me how to calculate the number of steps per 1 mm?
Thank you.

Me: It's 4 steps per tooth of your sensor disc. With 30 teeth you get 120 steps per full turn of your threaded rod. You need to know the pitch of your thread. A metric 6mm thread has a pitch of 1mm, so you get 120 steps per turn and so per milimeter.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.10.03 16:56:02 (UTC+1)
Name: Luis Olivet

Comment:
Tanks Friend. i will wait your software. tanks really very tanks

Me: You're welcome!

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.10.03 00:42:48 (UTC+1)
Name: Luis Olivet

Comment:
Hi HomoFaciencs.
I'm so tanksfull with your work...its just amazing. i little Questions:

1.- When you update this CNC machine. to use GRBL with out StepMotor (still using DC and Encoders)
2.- Why you change the linear strip encoder for disk, (have more precision?)
3.- can you make a software for windows?
4.- can i invete you a coffe (donation)?
5.- Dont leave this proyect... is just amazin. so wonderfull

tanks a lot bro. i hope you are very well.

Me: You're welcome!
1. I won't update this machine to GRBL. I will write an own software that can process gcode in a similar way GRBL does.
2. Only very expensive linear strip encoders are better than the simple rotary encoder setup I am using:
http://homofaciens.de/technics-machines-cnc-v3-x_en.htm
3 No. Linux is for free and the better choice for mankind, robotics and machines.
4. Simply click on the Donate button. Thanks!
5. I'll stay ;-)

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.10.01 08:28:13 (UTC+1)
Name: Thomas

Comment:
Dear Norbert,

It's here a beautiful Sunday morning,
that's a great job! I can now continue to learn how the machine works_
I will find a way to participate.

with all due respect, please receive my thanks

Me: So the latest software works, I guess?
Sun is behind fog here in Germany as live images from my rover R6 show.


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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.09.30 16:33:36 (UTC+1)
Name: Thomas

Comment:
Thk for quik respond. The disc is a 23cm 30 teeth. New to electronics, I have confined myself to reproducing the model as you explained it most faithfully.
However used a L298 N H with printer motor, it caused a loss of power : at 12v from 1.6 to 0.9A and therefore a big loss of torque. roller-rubber 10mm obligatory.
thinking of moving on to more powerful engines like you described.
or can be a bad manipulation and I have to try another arduino card..

love its design,sure it will work wonderful

Me: It's for sure not the arduino board and there is no "too slow" for the motors, must be a software issue. Try my latest version I extraced only for you from my workshop machine:
http://www.homofaciens.de/download/CNC_v3_2_1-experimental.zip
You must also update the arduino.ino on your board.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.09.30 14:31:07 (UTC+1)
Name: Thomas

Comment:
Dear homofaciens,
i try reproduce your 3.2.1.low config. Checking movement of the axes 1 step at a time using M key seems to work well like 10. When moving 120 or 1200 steps the software indicates write()of value failed

Changing recovery optical sensors for new H22A3 with resistors 180 and 2kohm, tested A0 A1 arduino pins protected 16kohm does not solve.
like looking before asking for help but there i no longer know where to look.
Could you please point me in the right direction?

Best regards,

Me: First of all you must wait for the steps to finish before pressing another button or else that error appears (it's still experimental software).
Your optical sensors will not cause the issue i guess. Do your motors spinn very fast and how many teeth has your sensor disc?

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.09.25 13:20:02 (UTC+1)
Name: Ben

Comment:
Hallo Norbert,
hast Du dir mal angeschaut ob CNC/Laserweb mit deiner Umsetzung hamonieren wird?

Die Software scheint nicht schlecht zu sein und basiert ebenfalls auf G-Code. Evtl. ist das was für dich.
https://github.com/LaserWeb/deprecated-LaserWeb3
Gruß Ben

Me: Danke für den Tip, aber ich bastel an einer eigenen Umsetzung. Hoffentlich finde ich bald mal wieder etwas Zeit, um an meinem Code weiterzuarbeiten...

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.09.05 02:39:43 (UTC+1)
Name: david

Comment:
gcode and encoder edition

Me: This is the encoder version. G-code software is work in progress...

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.08.26 04:42:00 (UTC+1)
Name: Naveen

Comment:
If you wish I will tell my idea of

Me: No need to make a big thing out of it. Simply post your ideas whenever you think they are worth sharing.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.08.22 12:48:59 (UTC+1)
Name: Naveen

Comment:
I got an idea about cnc with rotary encoder and gcodes supporting

Me: Creating an own machine is all about having ideas.




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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.08.21 09:39:30 (UTC+1)
Name: Andre

Comment:
Hallo Norbert,

würde deiner meinung nach ein Erweitern der Mechanik mit Kugelrollspindel ausreichen, um die CNC 3.2 ausreichend zu beschleunigen, um 3d Druck zu ermöglichen?

Gruß,
André

Me: Es sind die Schrittmotoren und deren Treiberplatinen welche maßgeblich die Geschwindigkeit einer CNC bestimmen. Eine Kugelspindel mit großer Steigung sorgt dann - ausreichend Drehmoment durch die Motoren vorausgesetzt - für entsprechend schnelle Bewegungen. Ob's im Paket einen ordentlichen 3D-Drucker ergibt, hängt von der Qualität der Umsetzung ab. Wie gut das klappt, kann man immer erst sagen, wenn man's gemacht hat...

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.08.18 17:08:12 (UTC+1)
Name: Ram

Comment:
Sir is the gcodes are supporting now

Me: Still in a very experimental state...

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.08.04 08:12:11 (UTC+1)
Name: hari

Comment:
Hi Sir,
Please add limit switches(photo sensors as limit switch) to that pin diagram.

Me: I have updated the schematics.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.06.17 11:46:07 (UTC+1)
Name: hari

Comment:
Where to connect the two leads from each photo detector?
In the circuit diagram,the two leads are pointing upwards, what that mean?
Sir I'm new to cnc..

Me: Have a look at and read the text box in the circuit diagram. It's written where to connect what photo detector.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.06.13 08:19:17 (UTC+1)
Name: ram

Comment:
can you develop the software for better interface and better control of dc motors and view of design it is cutting in linux

Me: This CNC is still under construction and so is the software. I am working on a G-code version of my software (of course running on Linux).

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.06.05 12:33:31 (UTC+1)
Name: Naveen

Comment:
I fix only x-axis

I tested motor it by pressing cursor keys, it works.

But when i try to plot any file it keep struck

Me: As said before, send me photos or a video of what goes wrong. "It keep struck" is still nothing I can imagine what goes wrong.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.06.04 16:23:45 (UTC+1)
Name: Naveen

Comment:
Haii
I have done by your instructions
I fix only x axis and try to plot but it doesn't works
Help me and send me how to plot the file in software

Me: "it doesn't work" is a too commone description. Tell me EXACTLY what goes wrong. Photos or a video of your problem can also help finding the error.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.03.25 18:10:31 (UTC+1)
Name: Wikly (...@gmail.com)

Comment:
Hello. Excellent projects.

I have already assembled all the mechanics, connected DC motors and single encoders + arduino mega and Adafruit Motor Shield.
But because there is a question!
Is it possible to redesign the code to work with Adafruit Motor Shield (http://www.instructables.com/id/Adafruit-Motor-Shield-Tutorial/)?

Just interested in working with single encoders.
Tell me how you can remake?
At the moment I use the code for Arduino from the site ecnc.ru with some changes for DC motors.

Me: The Arafruit shield replaces the H-bridges I am using in my design. I guess all you have to do is changing the pin configuration in the Arduino sketch of my software (CNC_v3_2.zip in the download section). The pins are defined in:
#define MX_S1 A0             //Sensor input 1
#define MX_S2 A1             //Sensor input 2
#define MX_DIR 2             //Direction output motor
#define MX_PWM 3             //PWM output motor
...
Change the numbers to meet your pins on the shield and those used for your encoder sensors. Consider that my software is still developed, currently I am implementing Gcode functionality.
For details and sample code using rotary encoders, have a look at the the chapter about rotary encoders
Once again: don't type an email adress in the comments! I don't answer comments by mail! You must send me a mail if you want to get an answer by mail!





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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2017.02.02 10:15:24 (UTC+1)
Name: seamiki

Comment:
Good morning Mr. Norbert,
Have you thought about diving in 3d printing?
An extruder to recicle plastic waste would make the difference between what the luxury hobby 3D printing is now and what it should be: affordable technology. What do you think about that?
As usual compliments for your site that keeps me coming back on a daily basis.
Regards

Me: I got a 3D printer kit from Gearbest. With that I will publish chapters about 3D printing, soon. Be patient!

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Seite: technics-machines-cnc-v3-2-1_ge.htm
Datum: 2017.01.22 21:19:37 (UTC+1)
Name: klangfreund

Kommentar:
Hallo nochmal, ich mache mich immer noch schwer mit den H-Brücken. Könnte man auch einen Audio Verstärker statt einer H-Brücke verwenden, der müsste doch mit PWM klar kommen oder?

Me: Einen Audioverstärker als H-Brücke zu verwenden ist keine gute Idee. H-Brücken sind deutlich billiger als diese Verstärker. Audioverstärker sind außerdem nicht für hohe Gleichströme am Ausgang konzipiert. Da sind meist Koppelkondensatoren am Augang zu finden, welche den Gleichstrom herausfiltern (was für Audiosignale auch sinnvoll ist).

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Seite: technics-machines-cnc-v3-2-1_ge.htm
Datum: 2017.01.17 06:56:16 (UTC+1)
Name: klangfreund

Kommentar:
Ich möchte auch welch aus Druckern nutzen, vielleicht auch reparierte Akkuschrauber Motoren, ich möchte sichergehen das ich einige ausprobieren kann.

Me: Nur zu! Meine CNCs sind für's Ausprobieren konzipiert. Elektromotoren gibt es in vielen Geräten.

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Seite: technics-machines-cnc-v3-2-1_ge.htm
Datum: 2017.01.12 13:11:04 (UTC+1)
Name: klangfreund

Kommentar:
welche H-Brücken sind außer den gezeigten empfehlenswert?

Me: Die L298N sind für den Bereich bis 2A günstig zu beziehen. Weniger ist für eine CNC Maschine definitiv nicht zu empfehlen.
Bis 42A bei den BTN7960 reichen auf jeden Fall. Elektromotoren mit noch höherer Leistung wären für diese Mechanik viel zu viel.
Welche möchtest du denn verwenden?

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Seite: technics-machines-cnc-v3-2-1_ge.htm
Datum: 2016.12.29 16:41:01 (UTC+1)
Name: klangfreund

Kommentar:
Die Fräse gefällt mir, ich will mir auch eine bauen. Hab schon einen Drucker zerlegt um an Motoren ect. zu kommen, wie wäre es die y-Achse mit einem Zahnriemen anzureiben?
Wann kommt ein Video zur ummstellung auf Schrittmotoren?
Könnte man so eine cnc auch mit herkömlichen Software betreiben?

Me: Zahnriemenantrieb ist an einer CNC Fräse nicht zu empfehlen. Die Riemen dehnen sich zu stark unter Last.
Die Umstellung auf Schrittmotoren kommt erst, wenn die normalen Gleichstrommotoren mit neuer Software auch G-Code verarbeiten können.

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Seite: technics-machines-cnc-v3-2-1_ge.htm
Datum: 2016.12.10 21:05:27 (UTC+1)
Name: Christian

Kommentar:
Genial!
Mir gefällt diese CNC-Maschine!:-)
Ein paar Fragen:
Wie lange hat es gedauert die Maschine zu bauen?
Kann man die Maschine auch aus Aluminium-Profilen bauen bzw. welche Nachteile hätte das?
Lg Christian

Me: Es dauert immer noch, die Maschine zu bauen - die ist noch nicht fertig! zur Zeit überarbeite ich den Kühlmittelkreislauf.
Aluminium ist wesentlich weicher als Eisen und eine CNC fräse kann nie verwindungssteif genug sein.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: (UTC+1)
Name: Paul

Comment:
I forgot to mention that source to power the motors has 700W (14V x 50A = 700W)

Me: That should be enough for the motors as long as not two of them get blocked simultaneously.

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2016.12.08 11:20:58 (UTC+1)
Name: Paul

Comment:
Hello, congratulations for the project submitted.
I need your help.
I want to achieve a CNC machines with motors from 3 drill 14v. The motors are 25A maximum current (when locked in operation). Operating current is 2.5A aproxinativ. I want to realize bridges H to control these motors. I found this scheme ( https://i.imgsafe.org/93c9d34e9a.gif ) on your website. I want to know if it is good for my project, and what parts (type, value, model etc.) to use.
Thank you

Me: This is just an experimental H bridge I have build to demonstrate how things work. It has no current or heat protection, thus it is easy to destroy the power transistors in this circuit (as I did a couple of times). I highly recommend buying an assembled H bridge rather than soldering one from scratch. Look for boards with a BTS7960 chip that can switch currents up to 42A.




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Seite: technics-machines-cnc-v3-2-1_ge.htm
Datum: 2016.12.02 19:16:14 (UTC+1)
Name: w.ziesmann

Kommentar:
Hallo ich finde das einfach cool was hier gemacht wird,  weiter so!

ich bin grade am einem Punkt angelangt welche Software ich zu benutzen soll wenn ich mein "möchte gerne cnc maschine" an steuern möchte und wie das funktioniert

mfg wowa

Me: Der Lerneffekt ist am größten, wenn man von Grund auf selbst programmiert, was man selbst zusammengebastelt hat!

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Page: technics-machines-cnc-v3-2-1_en.htm
Date: 2016.11.22 07:26:07 (UTC+1)
Name: David

Comment:
Hi.
Googd work.
Do you think to put the sensors directly on the big gear?.
In the video seems that the gears are ovelized, or it is a visual efect?
Thanks.

Me: The gears are cut from 5mm plastics, thus it doesn't fit into the gap of the photo sensors. The larger the diameter of the gears, the lower the forces acting on the teeth.