Hi guys,
I need to cut some internal oil grooves in the 8 shape figure. It would also help for external grooves but not at this point.
The spindle encoder is hooked up and working correctly. 
If anyone has achieved this, please give me some hints.
Thx!

I would probably add a series resistor so so if you accidentally ground the ALM- output you do not damage the optocoupler

so:

+12V --> 1K resistor --> ALM+
ALM- --> 7I76EU input

Yes, you can use a 7I76U with  a 7I96S  by using 7i96s_7i76d.bin firmware
and connecting the 7I76U to the 7I96S's P1 expansion connector.
 

I'm working on creating a new Reset Function that will clear the machine's E-STOP state. I'd like to implement this as an API route so that I can control the mill's functionality remotely from another computer.Currently, my route is based on the function from . However, PathPilot crashes approximately 1 out of every 5 times when I call this endpoint.Does anyone have any ideas what could be causing this intermittent crashing issue?

I read the  Which Mesa Card Should I Buy?  post and it was super helpful.

I wanted to buy a Mesa 7i76EU card today but they are out of stock. They are also out of stock on the 7i77 daughter card.

So, I hope to buy a  7i96S today, but I need to know what daughter board I can use to increase the number of inputs an outputs?

Can I use the  7i76U ?

I am doing a manual lathe CNC conversion. I'm eventually going to be adding a 12 tool ATC turret.

I have not finalized all the required I/O yet, so I wanna make sure that I have enough I/O for future updates to the lathe.

If I can use the  7i76U , I think I will have plenty of I/O for future updates, that may include​ ...

• a third MPG
• an encoder on the ATC turret for tool location/identification,
• a "Y" axis, three motor, four gang live tool option with an MPG (this last addition is way in the future if at all). 

Thanks,
Chris​​​​​​

besriworld wrote:

Control panel connections :

net matrix_r2c2 matrix_kb.0.key.r2c2 => halui.spindle.0.stop
net matrix_r2c1 matrix_kb.0.key.r2c1 => halui.spindle.0.forward
net matrix_r2c3 matrix_kb.0.key.r2c3 => halui.spindle.0.reverse

Why do you use the halui pin?
you could use  linuxcnc.org/docs/html/gui/gmoccapy.html..._bottom_button_lists

Norbert
 

rodw wrote:

Ignore all other advice you have been given by others and just do it!


 

Yeah I'd second that.

@PCW, @tommylight,
vielen Dank für die Tipps.
Wenn ich meine 12V direkt auf den Alarm des Motors geben kann, wäre das natürlich das einfachste.

@PCW
In der Beschreibung des Schrittmotores habe ich nun auch die richtige Stelle gefunden.
 
Was meinst du, ist der Vorwiederstand bereits im Motor verbaut, oder sollte ich da einen vorsetzen?

Danke und Grüße,
2tinker

Hello Hakan, thank you very much for your help so far!
Yes I have a realtek adapter on my MSI B650M motherboard.

Let me install the drivers and get back to you.

The interface has a manual mode where you can jog to an angle.
Or enter G0 X-40 in the MDI for it to go to -40 degrees.

Its not very hard to do this with an Arduino (even for me) and there are several such indexers available. Sorry but I don't think I have the code anymore.

Don't overcomplicate this. The motor is good for 4.2 amps. Set the driver to give it 3.8 amps which is the closest you can go without going past the motor rating. 48 volts will be fine. I've driven similar motors at 90 volts. CNC does not drive motors at peak load for long periods.

Look at the motor's full data sheet  www.omc-stepperonline.com/download/23HS45-4204S.pdf
The insulation is rated for 130 deg C so don't let it get hot enough for it to melt as that will destroy your drive. 
The maximum temperature rise permissable is 80 deg C. Add that to 30 deg ambient temp (heck its been up to 39 degrees C here the last week or so). So 80+30 = 110 deg C which is hot enough to burn you but not melt the insulation. If the motor misses steps and it will only do that if it gets too hot (it will then let you know that its missing steps in a spectacular way).

If the drivers have a fault output, connect it to joint.N.fault-in. This will trigger if the motor gets too hot and stop Linuxcnc
If the drive misses steps or faults, reduce the curent to the next lower setting.

Don't be concerned about lowering the current if you need to. The actual current required for a given application may be well below the rated current if you do do a full design. eg one of my 2 amp motors only needs 1 amp to achieve 60 m/min rapids and > 5 m/sec/sec acceleration (tested to 8 m/sec/sec)

Typically, the Chinese drivers are rated based on peak voltage. Some Drivers (eg Lam Technologies) are rated for RMS so a 6 amp driver of theirs will give 6 amp RMS, enough to melt the average Chinese motor. So a 4.2 amp motor is probably run at 2-3 amps with Lam. This is why Tommy suggests a more conservative approach than me!

Ignore all other advice you have been given by others and just do it!