Tell us about yourself!
both stepper motors move whenever you change X or Y location, so that is expected.For 16 tooth pulleys you will need to change the scale as you did, plus the belt alignment may be wrong, fixing that will require changes to the two pieces of the centrar carriage).Without jumpers the scale changes too, plus the motors vibrate a lot and I will not recommend to work this way.
El servo necesita más alimentación de la que puede dar el USB, así que cualquier prueba que hagas tiene que ser con alimentación externa para que los resultados sean significativos.
I have used PLA for printing the parts of 4xiDraw. No problem so far.You are welcome.
Si un servo gira sin parar con m3s30 es porque es un servo de rotación continua, para este proyecto se necesita un servo convencional (que no puede girar más de 180 grados).
You can try Arduino Servo Sweep example code (comes with Arduino IDE) setting the servo pin to 11. If the servo still does not move back and forth there is something wrong with the electrical connection.
Pen up and pen down commands can use any M3S that works for your hardware but these will need to be set on the plugin you use to create the gcode fille in Inkscape (not on the universal gcode sender).
I used whilte PLA.
it's overkill but there is no reason not to work.
4xiDraw does not use them. Home it manually before powering it up.
I am not sure it will balance properly. Try it at your own risk.You can use the same software.
12V 2A is what I use and it works ok. More amps are never bad but bulkier and perhaps pricier. But if you have it at hand, go for it.
Ok, then the scale of one of them is wrong. Two things:$100 and $101 should be the same AND ...both stepper drivers will need to have the same microstepping level (the three jumpers below the driver boards should be on)
if you use different stepper motors (with different number of steps per revolution) you can compensate for that using the scale values $100 and $101.For example if motor0 os 200 steps/revolution and motor1 is 96 steps/revolution, maybe you can have $100=80 and $101=38.400
if you use different stepper motors (with different number of steps per revolution) you can compensate for that using the scale values $100 and $101.For example if motor0 os 200 steps/revolution and motor1 is 96 steps/revolution, maybe you can have $100=80 and $101=166.666
If using the firmware I linked it is already enabled.
You are doing fine. That message is a warning not an error, go ahead with the Upload and you are good to go.
error:Expected command letter: G-code is composed of G-code "words", which consists of a letter followed by a number value. This error occurs when the letter prefix of a G-code word is missing in the G-code block (aka line).have a look at https://github.com/grbl/grbl/wiki/Interfacing-with-Grbl for more info on errors and configuration
Did you enable corexy in the firmware?
what does it draw instead?
Sure, you can use wood two, most of the plastic parts can be made out of wood too with a bit of patience.
If you want to use Bluetooth you need to make sure the Bluetooth module is configured to use the same baudrate the Arduino is (115200 bps in the firmware I use). You can use the same software (Universal Serial Sender) that you used with USB, just change the serial port to the Bluetooth one.
You can use the guidance provided here https://www.instructables.com/id/Arduino-Bluetooth-Basic-Tutorial/And you still use the application on the PC side but now use the bluetooth serial port instead of the USB one.
Thingiverse link contains the DXF for laser cut parts. If you are good with the saw you can cut it by hand from plywood. That should be cheaper in case you do not have access to a 3D printer or laser cutter.
Hi KadirÖ1,The washer is for the inner races of the bearings to contact to each other leaving the outer ring to move freely.
It seems related to Universal Gcode Sender https://github.com/winder/Universal-G-Code-Sender/...Can you control GRBL from Arduino's Serial Monitor? Uploading GRBL to Arduino maybe tricky the first time, try to follow the instructions carefully https://github.com/grbl/grbl/wiki/Flashing-Grbl-to-an-Arduino
Hi Burock54,M5 is the same as M3 S0M3 S20 means to rotate 20 units the servo.M3 S50 means to rotate 50 units ... and so onM3 S0 means the servo should go to 0 degrees angle (units are not degrees but proportional to that).If connecting to your GRBL the servo does not respond to different commands as the ones above there is still something wrong in your setup (as I guess you connect GND and +5v to power your servo besides the signal pin).
Hi burock54,Please note connecting 12V to the CNCshield is not advisable. Use the Arduino power input jack instead. Some users reported broken USB chip when using that configuration.
If servo rotates one or more revolutions it means you have the wrong type of servo.
You have the Onshape CAD linked in Thingiverse (which is linked from the instructable too). I have created a 1m x 0.7m version using 8mm rods and I could not recommend it.
problems: balance, too much play, motors may not be powerful enough for a larger version, difficult to carry around.
Thanks a lot for mentioning my name and code. Glad to know it worked for you.
Thanks a lot SandorH4 for your work. I am sure it is helping a lot of Windows users out there.
solo cuenta el config.h en la carpeta grbl dentro libraries
Es el COREXY que tiene que estar sin comentar pero me parece que no has conesguido cargar la versión sin comentar.
There may be groups inside groups that might need more than one ungrouping operation.
The plugin I posted works with 4xiDraw as it replaces the laser on/off commands by pen down/up commands.
Hi, I do not think changes on GRBL version are making a difference for the job. At any rate, you need to port the changes so the servo works (as stock GRBL spindle control does not work with a servo). I have not made any changes to my machine so far, but I can see that smooth bars could be fixed with screws instead of superglue.
Sure you can do that too. Other people use a third stepper for the pen up and down as Z-axis.
What you want to do is beyond the current capabilities of the firmware I use (GRBL assumes drivers with STEP and DIRECTION drivers. L298 won't work like that, so you will need to figure out a firmware that can use it).Wiring is like this https://okelectronic.wordpress.com/2015/10/02/diy-cscnc-5-connecting-all-grbl-linistepper-limit-switches/
hatchfill is what I was about to suggest. other than that I do not know what else you could do.
Not in a way I am aware of.
Use Torsten's firmware as it is an adaptation of the original AxiDraw plugin.
No, I do not think so.
try this other tool for vectorising http://online.rapidresizer.com/tracer.php
no idea but I would guess it does not.
Great job Miguel.bi, and thanks a lot for sharing it.
That is going to be great. Thanks.
Thanks and congrats on your working unit.
I have only used 1.8º but I cannot think of a reason of why 0.9º won't work.
I would say better than 0.2mm but math can fool you into thinking you can do much better. On the other hand, using a single belt for the two axis can make repetitivity poor unless you manage to get a very rigid structure. I won't use this for any high precision operation.
That piece of information I did not know. Thanks for sharing it.
SVG coordinates (down is Y+) work opposite of cartesian coordinates (down is Y-) https://www.sarasoueidan.com/blog/svg-coordinate-systems/Depending on your plugin used that is kept or flipped. If your image is not right but the mirror image then you can flip it on Inkscape before printing it. For me, home is bottom left corner for my paper page but top left corner for inkscape.
45 degree rotation is usually due to not having enabled COREXY on GRBL firmware.
My version should not need any editing as it is already configured properly.
if you use stock GRBL instead of the one I linked here do not expect the servo to work.
you may want to read how they do it here https://www.shapeoko.com/wiki/index.php/Home/Limit_Switchesbut you only would use end-stops for X and Y axis
you can use this link to drag and drop the gcode file and view it on your browser. AFAIK files uploaded are complete.
Only one wired is needed (as negative wire is already connected on another pin). Failure to have this connection may sometimes end up with a burned Arduino. The soldered wire will bring 12V from Vin on the Arduino to the CNC shield (to power motor drivers). Power is only applied to the Arduino power jack input.
the missing link http://chilipeppr.com/jpadie
Enhorabuena. No he probado la extensión, si tienes dudas concretas quizá le puedas preguntar al autor. Normalmente para que python use el serie se require la instalación de pyserial.
do your motors move smoothly without the belt? if so, is the belt the same pitch as the pulleys? if so, can you move the carriage by hand smoothly?
Have you placed the jumpers for setting motors to 16x microstepping?
you may want to read this https://github.com/grbl/grbl/wiki/Configuring-Grbl-v0.9in particular $130, $131, $132 – [X,Y,Z] Max travel, mm
Verifica que el CNCshield no esté defectuoso y que los pines de dirección no estén cortocircuitados a masa.
Thanks a lot for a very informative post. I am sure many other readers will find it very useful too.
I assume you have enabled homing, set $22=0
Aunque entiendo que es correcto si con $3 si que cambia el sentido de avance ...
Hi Tamer, it is correct. Z axis is not used here. Pen up and down are controlled with M3 and M5 commands
It is running on OSX 64-bit and on Linux 64-bit so I guess it should work in 64bit WIndows.
Yours is quite larger than mine. I have not experienced such a problem but I guess you may reduce it by making the servo slower and/or reducing the moving mass of the pen and pen carriage.
Great to know. I assume it is Torsten's code. His github is posted so you can create an issue for him in there.
Yo sólo estoy usando coordenadas positivas. Quizá te ayude https://github.com/grbl/grbl/wiki/Frequently-Asked-Questions
Konstantin did a pretty good job (though he made some changes to the design too) https://www.youtube.com/watch?v=qanuOqAqHyo
there is a picture of the wiring. If you need the cncshield circuit you can get it here https://courses.ideate.cmu.edu/60-428/s2017/ref/text/resrc/cnc-shield.html
The new plugin that connects to the AxiDraw I have not yet tested it so I cannot help you there. You can connect to the AxiDraw using putty or Arduino Serial Monitor to issue commands to the board and test its behavior.
It seems there is a short in your supply. Try removing the servo connection to see if you Arduino responds again. If not, I am afraid it has been somehow damaged. As for the right connection follow the info provided by your servo vendor. Maybe they are using other colors I do not mention or even worse, they are using them in a different way. And try to figure out the servo wiring just using Arduino Sweep example without the CNCshield.
I reckon Step 4 covers that with text and picture. Is there any problem with the info I provided there?
Are you powering the Arduino with an external power supply? Powering it through the Arduino power jack?
Then I would look for a short in the CNCShield PCB. Check whether or not there is continuity from D11 to Z+ on the shield. Then check the same to +5V or GND ...
330mm is ok. Locking nuts are ok but more expensive and difficult to tighten.
If one motor works ok and when you add the second one both do not work I think it is a power supply problem. Check your supply voltage then.
I have not yet tested but Torsten's is most likely the better choice (print directly from Inkscape, no need for another software).
I reckon you should first use one of the sample gcode files. Once these work for you you know the machine is working ok. https://www.youmagine.com/documents/41420/download
that is the way I have it
It might work but I do not recommend anything less than 2A.
VIbrating motors means only only one coils is energized (or both are energized the wrong way). Posible causes:1) poor connections (check for wires are well connected)2) broken driver (never connect or disconnect motor wires with the power on)3) incorrect wiring (are you sure each coil ends go to adjacent pins?)
Servo is completely independent and unrelated to stepper operation. Check you connections.
this is to set the driver to 16x microstepping so motors turn smoothly
The link provided above does contain pictures of the jumpers besides a detailed explanation of the purpose of the jumpers. You need three jumpers per driver and they have to be as in the picture
did you populate the three jumpers below each pololu driver board on CNCshield?
try this online tracer http://online.rapidresizer.com/tracer.php
Many people having problem with servo because the only power Arduino gets is from the USB. If you follow the wiring I propose the 12V supply go to Arduino power jack. Does this help?