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  • laurentl38
  • laurentl38
04 Jul 2025 20:25 - 04 Jul 2025 20:25

IO Questions around mixing IO between Ethercat and Pi 5?

Category: EtherCAT

Hello zmrdko,

I just found your great work with the easycat card.
I'm starting to play with it, and it works great for digital input and output. With 1 encoder, no problem.

However, with 2 or more encoders, it doesn't work... As soon as I change the "QUADENCS" value to greater than 1, I can no longer connect to the easycat card. I get an error with the "easynavigator" software.
Have you ever had this problem?
Do you have any leads?

regards
Laurent
  • ALS
  • ALS
04 Jul 2025 20:02
Tool Change was created by ALS

Tool Change

Category: Configuration Tools

Hey guys...
I'm using Linux for the first time for a lathe with a turret with eight tools, each in its respective position, sending an individual signal for each position and a turret locked signal.

Working cycle:
"Control system sends signal of tool change -->Motor running with positive rotating -->Toothed disks is disengaged -->tool holder disk rotating-->tool holder disk locating-->Control system receives the signal of tool holder disk locating and sends the signal of delay time of motor reversal rotating Motor running with reversal rotating -->Toothed disks is locked-->Delay time of"

I need to know if there is any component in Linux that supports this cycle, or if someone has already done something similar so that I can use it as a basis to create the tool change cycle.
  • dubstar_04
  • dubstar_04's Avatar
04 Jul 2025 19:51
Replied by dubstar_04 on topic [Solved] Mesa 7i96 Spindle PWM

[Solved] Mesa 7i96 Spindle PWM

Category: Driver Boards

Amazing! Thank you! 

I don't know the history of the board. Bought it cheap on eBay many years ago. It would be great if I can manage to use it, if not a 7I96S would probably suit my needs better.

Thanks again,

Dan
  • meister
  • meister
04 Jul 2025 19:47
  • PCW
  • PCW's Avatar
04 Jul 2025 19:44
Replied by PCW on topic [Solved] Mesa 7i96 Spindle PWM

[Solved] Mesa 7i96 Spindle PWM

Category: Driver Boards

 

File Attachment:

File Name: 7i96s_2pwm...7-04.zip
File Size:248 KB


7I96 bitfile with 2 PWMGens

Looks like the 74ACT04 (U17) was damaged
  • Aciera
  • Aciera's Avatar
04 Jul 2025 19:20
Replied by Aciera on topic Gmoccapy 3.5.1

Gmoccapy 3.5.1

Category: Gmoccapy

Probably. At least I could reproduce it this way.


The issue here is that using 'halui' in parallel to a gui is not really a very good idea at all. Many do it, myself included, to connect panel buttons. Gmoccapy is designed to use button rows aligned with the gui buttons but that is not always practical.

I wonder if it would make sense to have gmoccapy create its own dedicated pins like 'halui' so we would have more control over them.
  • whyme
  • whyme
04 Jul 2025 18:59 - 04 Jul 2025 20:19
Replied by whyme on topic Raspberry Pi 4 with Mesa 7c81

Raspberry Pi 4 with Mesa 7c81

Category: Driver Boards

so a stiff pulldown to fight the pullup of the mesa card for the inputs?

I am using 7c81_5abobx2d firmware with BOB boards on P1 and P2.

Edit:
I did a little bit of digging.
- The relay pin P17 is IO7 of the Mesa ports, which is on the edge of the pull resistor array. I could desolder the array and put it back on shifted by one to remove the resistor of the pin.
- On the BOB there is a 10k pullup array on the relay pin. but the signal comes through a via in the middle of the pullup resistor and the 74HC... I could cut the trace between the via and the resistor to remove the pull up on the BOB
- solder in a pulldown resistor on the BOB (if for whatever reason the flat cable between the Mesa and BOB gets bad).
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