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  • sandersjrs
  • sandersjrs
17 Jul 2024 15:49
Replied by sandersjrs on topic Dimensions Slightly Off

Dimensions Slightly Off

Category: Milling Machines

-same issues happen on 1/4 and 1/8 - I can hear the steps skipping
-not sure what you mean by your second point
-lower acceleration seems to not change anything

machine images attached

A couple other things to note:
-I'm getting the same problem when I use HSM (solidworks cam add in from autodesk, similar to fusion cam) and Cut2D from Vetric
-If I orient the long direction in the X axis or the Y axis, it seems to skip more steps moving in the positive direction (X or Y). The most positive side of the pocket will have that stepping problem between cutting layers as shown before, but the most negative side of the pocket seems to stay lined up 
  • cncproject2024
  • cncproject2024
17 Jul 2024 15:45
MESA 7i96S power supply was created by cncproject2024

MESA 7i96S power supply

Category: Driver Boards

I have just ordered a mesa 7i96s and was wondeing what the best way to power it is. I've read that it requires 5V but I'm not sure what the current requirements are. Additionally does it have built in over current protection, so that it will only draw the current that it requires if I was to use say a 5V / 10A switching power supply?
  • sandersjrs
  • sandersjrs
17 Jul 2024 15:42
Replied by sandersjrs on topic Dimensions Slightly Off

Dimensions Slightly Off

Category: Milling Machines

Gcode files:

Longways y oriented:   

File Attachment:

File Name: ylong.ngc
File Size:4 KB


Longways x oriented:   

File Attachment:

File Name: xlong.ngc
File Size:4 KB
  • JT
  • JT's Avatar
17 Jul 2024 15:39
Replied by JT on topic Mesa Configuration Tool

Mesa Configuration Tool

Category: Configuration Tools

Thanks for the explanation.

Result from apt-cache policy linuxcnc,

linuxcnc:
Installed: (none)
Candidate: (none)
Version table:

Which is strange as it is a fresh install of the current 2.9.3 iso.
 

Sorry my mistake it's apt-cache policy linuxcnc-uspace

JT
  • tommylight
  • tommylight's Avatar
17 Jul 2024 15:15
Replied by tommylight on topic Mostly 3D Printed CNC Foam cutter

Mostly 3D Printed CNC Foam cutter

Category: CNC Machines

I do not use it, a client does, and he is one of those "why do something simple when you can complicate it" so he uses AutoCAD to make the drawings, then imports into Inkscape and exports as gcode from it.
For the 5 axis stuff he uses something else and despite telling me a dozen times, i forgot what, sorry.
  • Aciera
  • Aciera's Avatar
17 Jul 2024 15:10
Replied by Aciera on topic halui

halui

Category: General LinuxCNC Questions

Make sure you have this line in the [HAL] section of your ini file:
HALUI = halui
  • slowpoke
  • slowpoke
17 Jul 2024 14:56
halui was created by slowpoke

halui

Category: General LinuxCNC Questions

I'm making a physical knob & push-button interface for Axis. I have an Arduino board that is successfully sending and receiving messages with Axis.

The next thing I want to try/test is push one of the physical buttons and then link that incoming message (that I can presently observe in HalShow) to cause the X axis to jog one increment in the positive direction. Assume I have already selected the X axis and set the jog increment, I just need to activate the "+" jog button. I searched through all the pins, signals etc in HalShow and could not find that "+ jog button", the closest thing I found was joint.0.kb-jog-active that gets activated when I click on the jog button, so not exactly what I need.

In the LinuxCNC HAL tutorial part 2, he has a bunch halui signals defined in his custom_postgui.hal file (see below). Can I simply replicate what he has done to get access to these signals or do I need to something else to expose the pins shown in the right hand column?
 
  • PCW
  • PCW's Avatar
17 Jul 2024 14:38
Replied by PCW on topic 7i96 non S PWM on an output possible?

7i96 non S PWM on an output possible?

Category: Driver Boards

The 7I96/7I96S SSR outputs are good to a couple KHz
but the software PWM will be limited by the 1 KHz servo
thread rate. As I said either PDM or say a 20Hz PWM
frequency should be fine for a hot wire.
  • my1987toyota
  • my1987toyota's Avatar
17 Jul 2024 14:35
Replied by my1987toyota on topic Mostly 3D Printed CNC Foam cutter

Mostly 3D Printed CNC Foam cutter

Category: CNC Machines

What program did you use for your 5 axis ? or did you have to hand write the G-code?
  • my1987toyota
  • my1987toyota's Avatar
17 Jul 2024 14:31
Replied by my1987toyota on topic 7i96 non S PWM on an output possible?

7i96 non S PWM on an output possible?

Category: Driver Boards

Thanks for the reply PCW. I highly doubt I will need a high speed pwm. I am just controlling
a resistive load. LOL. What kind of frequency can one of the outputs drive?
  • Sternfox
  • Sternfox
17 Jul 2024 14:24

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Hi peeps, I have the ec500 v5 and a stlink v2 I'm struggling to find any info on what pins to connect to my st link. My board has GND, SCK, SWD, PRO-B, 3V3 and BOOT.  Many thanks in advance 
  • PCW
  • PCW's Avatar
17 Jul 2024 14:23

Mesa 7i96s connected but inputs not working

Category: Driver Boards

As tommylight suggested, you must connect the 7I96/7I96S input common (TB3 pin 12)
for the inputs to work. The inputs are fully isolated and have no connection to the
rest of the 7I96S. If you want +5V to activate the inputs, you must connect the input
common pin to 5V GND.
  • PCW
  • PCW's Avatar
17 Jul 2024 14:17

BLDC component with 8i20 - how to get to work?

Category: Driver Boards

I would set the 8I20 current scalemax and PID max output
to the _peak_ current rating of the motor.

Did you try raising the servo thread rate to say 4 KHz?
 
  • PCW
  • PCW's Avatar
17 Jul 2024 14:11
Replied by PCW on topic 7i96 non S PWM on an output possible?

7i96 non S PWM on an output possible?

Category: Driver Boards

The SSR outputs on the 7I96 or 7I96S are relatively slow so
probably best driven by software PWM (the pwmgen component)
Your  40A SSR may also be fairly slow.

At an update rate of 1 KHz its probably best to use the PDM mode
(PWM frequency set to 0) but a low PWM frequency (like 20 Hz with dither
enabled) may also work well.

If you need a high speed PWM, you could use a configuration with
PWM on the P1 expansion connector (7i96_5abob_d.bit for example)
  • my1987toyota
  • my1987toyota's Avatar
17 Jul 2024 13:54
7i96 non S PWM on an output possible? was created by my1987toyota

7i96 non S PWM on an output possible?

Category: Driver Boards

  So I have a 7i96 non S version and I would like to use one of the general outputs 0-5 to send a pwm signal
to a dc to dc SSR capable of controlling 40 amps. The quick back ground is I am getting information together
for installing LinuxCNC on my 5 axis foam cutter and need a pwm for controlling duty cycle for the hot wire bow's
temperature. The reason for using the older 7i96 is because I have 2 in my inventory. So is it possible and if
so how much of a pain is it to do?
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