Forum Replies Created
-
Also, please tell us a bit about your machine.
Belts driven (e.g. ShapeOko) or screw machine?If belts, try releasing your X and Y belts, let the steppers spin free, see if motors have same issue.
If screw, you could loosen the coupling screws to allow motor to spin freely in the coupling.Welcome.
Lets work backwards, starting with your second post.
Motor LEDs – These are not definitive on/off indicators. The LED is connected to one lead on the stepper; if the stepper is moving, the LED will flash as that phase winding toggles on and off. If the motors are static, that lead may not be energized in the current position. Bottom line, Leds are only a useful indication when the motor is in motion.PWM-the PWM LED will be on when the PWM phase is greter than 0.
Unfortunately, the default value of $p1pof=0.1 (“off” phase = 10%); some pwm drivers like it that way but it does light the led.You hammering sound is likely a parameter settings issue.
Please post your settings for a review. See:
Also, hammering can be caused by low settings of the power POTs. Have you adjusted them?
Julian
We never heard back from HCamp, so have no update on if his resetting tinyG to defaults and entering correct parameter values helped.
Note that the value of $ct in his parameter list was just an indicator of something very wrong. It might help if you added your full parameter dump to the Dropbox record.I downloaded your Gcode file. Way to big for any manual review and detection of issues, but will be useful to debug none the less.
I first loaded your Gcode into the CAM generator/simulator I use, which is a backend to CAD program QCAD. That simulation displayed some bizarre results, including numerous large circles and small, including the one shown in your picture. Here is a screenshot :
I then loaded the Gcode into my CP (Linux, Chrome) It took quite a while for the simulation to render, but it finally did and appears to be correct, no large circles. I will note that the CP browser seems seriously loaded down by the Gcode file – any attempt to zoom or make a 3D perspective change trashed the entire browser window. That might be a 3Dviewer issue, or ??
So, nothing definitive in this so far. I could guess that tinyG is making the same error that my QCAD simulator is making, but have no idea why that would be.
OK, All I needed to see were these lines
[fb] firmware build 435.06 [fv] firmware version 0.97 [hp] hardware platform 1.00 [hv] hardware version 8.00 [id] TinyG ID 2X2660-FES [ja] junction acceleration nan in [ct] chordal tolerance nan inSo didn’t look much deeper.
Fw 435.06 is very much out of dateAnd, however they got there, the $ja and $ct parameters are bogus (see the reference I posted for you, not necessarily the right values, but typical.)
You need to upgrade to Fw build 440.14.
You also need to put tgFX on the shelf, it is not compatible with 440.14 and the sun has set on that project.Chilipeppr does have a learning curve, you might also want to get familiar with CoolTerm, a terminal centric low level application that is always good to have around as a fall-back. Much of what you are currently doing is doable in CoolTerm.
Here is the How-to :
Many folks are having issues with the “Easy Way” Updater application.
Give it a try, or move directly to using the avrdude method.
I suggest the -e option with avrdude, per:If you have problems with Fw upgarte, be sure to mention what OS you are using on your PC.
Flashing firmware will reset all parameters, and will correct whatever caused your $ja and $ct issues above. If you are going to focus on CNC,
dual axis ShaopeOko settings should be a good place to start:This a a broader discussion of tinyG Configuration:
Michael
Sounds like some progress.
This linkprovides a detailed summary of parameter setup. Generally speaking, the wiki is 3 axis (XYZ) centric, but folks have also implemented 4 motor all rotation machines as well, so think broadly as you read.
Do you have a particular application in mind?
A 3 axis CNC machine and a 4 legged robot spider are quite different, but both possible with tinyG.
Dropbox is a brand name for a Cloud based storage service. They offer a free service for moderate capacity. Other similar services include Gdrive from Google, OneCloud from Microsoft and many others. These can be very useful for many applications, you should investigate independently of your CNC activities. Keyword is ‘free’ for a good bit of storage.So here is a link to a typical parameter dump:
If you are not comfortable with the cloud drive concept, you can copy and paste your parameter list into a forum response here.
The cloud drive method is simply easier to view/evaluate.
If you do post here, don’t bother with the g54.. and beyond parameters, they are important but not for now in this discussion and just make for screen clutterYour $3motor and $z axis parameters look OK, but somewhat odd.
Did you enter parameters in inches, and this display was converted to mm??
What I mean by 0dd is :
[zvm] z velocity maximum 787 mm/min rather than the recommended 800
[zfr] z feedrate maximum 787 mm/min rather than the recommended 800
[zjm] z jerk maximum 51 mm/min^3 * 1 million rather than the recommended 50
(etc)
So these values are not “bad”, just odd.
What did you use to set Parameters? CoolTerm? CP-Serial Port Console?Search velocity does not affect jogging, just homing.
Jogs move at G0 velocity, $zvm.Can we assume you see ‘G91 G0 X1’ appear in the Serial Port Console when you jog one click on Z?
When you hand spin the Z axis pulleys, does it feel smooth, might there be some binding?
Am I correct reading your power adjustment dialog to say that you are experiencing the skipped jogs at full pot?
One way to test for Axis binding would be to remove the pulley and let the Z motor spin free (or just pop the belt off, if you can.)
