Advanced Search

I would venture a guess at interference and check that first with a scope or a DVM that has a min/max memory feature.

I made a header board for 5A-75E8.2 and started testing the litexcnc firmware and encountered the following problems.
1- When I close the linuxcnc software or press the estop key, the motors start moving.
2- For homing using encoder z pulse, after receiving the z pulse instead of stopping, it makes a strange movement at full speed and then stops.
I posted this problem before but couldn't find a solution for it.
Does anyone have any suggestions for solving these problems?

I cant say anything to problem 2, but as for problem #1:

Are you trying to use software for an e-stop? This is a terrible idea! IMO anyways. An E-stop Should cut power to your drives AND send a stop signal to your software. (one exception is: sending an e-stop signal to your spindle. if you cut power it will spin down for a long time. if you send it an e-stop signal it should stop almost instantly)

The dc servo motor you have is fine and can be used to operate with Linuxcnc. You need either an analog (+-10vdc) or digital (pul/dir) brushed dc servo drive. I use Copley Junus (analog drive) for digital drive Leadshine DC810 is a popular digital servo drive (I have no experience with these drives) both the Copley and the Leadshine require a dc servo power supply. I have seen on EBAY Advance Motion Control drives with built in dc power supply. Since your servo motor is low current and standard voltage you should be able to find what you need on EBAY.
In nut shell you need to match your current Mesa hardware with either analog or digital servo drive. Then start looking for the drive that match your servo motor.
Good luck Ben

limo, I saw you in the discord the otherday I think, you arent using the rp2040 right?

Is remora capable of doing it? Most likely, so long as you stay within the parameters of the remora board you are using, by which I mean, if your stepgen steprate is too high, remora might not be able to accommodate. Otherwise it sounds like a standard affair, as just configuring a stepgen.

Do we know how to configure a spindle with step/dir with remora? I dont personally. The bulk of it will be linuxcnc, and we can help you with connecting to remora

swepeter wrote:

how do i use a img.xz.sha256 file?
I believe that is the wrong file

Ooops try this
drive.google.com/file/d/127ibNkPRNx4Nw75...UuV/view?usp=sharing

Yeah can be confusing those MIN/MAX, pos/neg, sensors, logic levels, it's endless. Took me a while to set-up my mill correctly back when I've introduced Lcnc to it.

Shout out if you're stuck. Pleasure btw, be safe and have fun.

 
"Comment": "IN03", = what its labeled as on the board
" "Pin": "P4_21"," = Physical pin assignment on the MCU
"Data Bit": 6, = Remora/HAL pin assignment
Meanwile....in the halfile
net X_HOME remora.input.06 => joint.0.home-sw-in = remora.input.06 is IN3 is P4_21 , is connected to j.0.home which should be homeswitch for joint0 which is usually x.

I dont see home switch in any of the actual rt1052 halfiles though, so thats probably why you cant find the,

Mecanix wrote:

#*** AXIS_Y *******************************
[AXIS_Y]
MIN_LIMIT = 0
MAX_LIMIT = 144
MIN_LIMIT = -144
MAX_LIMIT = 0

[JOINT_1]
MIN_LIMIT = 0
MAX_LIMIT = 144
MIN_LIMIT = -144
MAX_LIMIT = 0

Rename attachement keybingdings.py.txt to keybingdings.py
Place into your /config/ folder.

Hope this helps.


 

It works but i have had to change HOME_OFFSET
HOME_SEARCH_VEL
HOME_LATCH_VEL

for positive values and everything perfect.

I think the same thing is going to happen to me with the X and Z axes.

When I install the limit sensors
i will test it and comment.

thank you so much.

Lpkkk wrote:

Hi pin outputs you can find in the attachment.
Estop has 2 pins, same for probe. Other inputs have one common and one negative for each input. 

Hey, dont use this one if you have the RT1052, i dont even know how yours is still working if youve been using that one. The one you keep posting is for the STM32 version of the NVEM. use this one by raf

raf1110 wrote:

oK lads I have got made a thing.

Hope this will help somehow 
Pinout NVEM v5 RT1052 Remora firmware config pinout
 

Ah f.it, changed my mind. We'll do another board if/when we'll need more/all pins. Larger PCB, wider connector pitch, VFD analog + Relay, etc etc. 

a.k.a Production-level "LinuxCNC-RIO - RealtimeIO Motion Control Board"

Let's get a solid prototype out and tested first. Sending this out as-is. I NEED THIS PCB BACK ASAP loool

Limo wrote:

I don't want to seem intrusive. But does anyone have an idea and could help?

 

Hi, maybe this thread could help
Lathe Spindle control with step/dir - LinuxCNC

meister wrote:

if you still have io-pins free on the FPGA, put them on test-pads if you can, you can always use them
 

Ok, I'll delay the pcb fab a day and see what I can do with those lonely 15 GPIOs. I'll have them all via and TP on the back side of the PCB. 
Fine if I just leave them at their 3V3 logic level? Test pins assuming, [USE WITH CARE, pirate skull logo near lol]

if you still have io-pins free on the FPGA, put them on test-pads if you can, you can always use them

I don't want to seem intrusive. But does anyone have an idea and could help?

thanks! I actually just come from further testing. I must have done something wrong. Because the states of the pins do actually change. Apologies.

How is it mapped now anyway, implicitly?

because on the top of the example-hal file it mentions that limit switches are configured. but i cant find them explicitly:

➜ remora-rt1052-basic cat remora-ec500.hal
# Basic HAL config file for NVEM controller board running Remora firmware
# Configured for 3 joints (A, Y, Z axes) with home and limit switches

Thanks!
Alessandro