2 seperate MPG handwheels for each axis - CNC Lathe build

Hello Guys,
i think about 2 years ago i created a topic where i asked if its possible to use a spindle encoder with a cheap breakout board and i got a lot of help from you and i do now know that it depends on the Latency, but i also asked about use 2 seperate MPG handwheels for each axis and it seems its not a problem with software encoder.

Since over an month i started with the build of the CNC Lathe, but right now i have not a lot of time to do the mechanical work, but i bought already a PC, Monitor and also i do got the MPG Handwheels: 5V-6pin-100pulse + 80mm - ALIEXPRESS LINK
The BOB i use: SSK-MB2 Breakeout Board (in case you would say i should not use a cheap breakeout board if i do want to use 2 MPG + spindle encoder, then of course i am ready to order a MESA 5i25 + 7i76, but i have to admit that i would like to save some money and do the update maybe later in case i would know that it will make a big difference between a cheap BOB and the Mesa cards)

Yesterday i started to wire up one MPG handwheel same as shown on the 2 pictures from this topic: www.forum.linuxcnc.org/27-driver-boards/...ing-started?start=40
*I have added 2 pictures from my setup to this topic*

It seems to work, because i measured 5V signal when turning the handweel and measuring on the A and B wire.

Right now i have to admit that i have no clue how to do the HAL setup. I tried to find a topic where someone did the same with a cheap BOB, but i can only find topics for the setup with MESA cards.
I feel a bit bad to ask you to tell me how to do that, but i have that feeling that it would take me weeks to get it done without any help and it would be like a trial and error.

I did not change anything on the HAL or INI files or any other files, because i just do not know how to start and i currently just want to test the MPGs, so that i will later know how to get it to work, because i see that as the biggest problem, but also i would like to have e.g. 3 buttons next to the MPG Wheels to change the resolution (0.01mm, 0.1mm, 1,00mm), but i also do not want to ask for too many things at once.
I have build already a CNC Router with slave axis and got the homing setup done, but the MPG Handwheels setup seems to be a bit too much for me.

I really hope you can help me out. I am not that much in hurry, but as soon as i get the Power Supplys from China, i would like to start with the electrical box setup.

PS: I really tried to find a way to do it by my self.

Thanks in advance and best regards.
Denis

Some info on parallel ports and their capabilities:
forum.linuxcnc.org/38-general-linuxcnc-q...ontrol-boards#167456
forum.linuxcnc.org/30-cnc-machines/39061...-and-firmware#167371
Beware that when using the 9/8 mode, the 4 additional inputs draw more current than the other 5 so some encoder will not work with it without adding some resistors. Also those modes work on built in ports and some PCi/PCI-E cards, not all.
The painful truth is that using parallel port for spindle encoder is not the best solution by any means, it works just fine for MPG with low count encoders, but spindles use high count encoders and you run out of reliable bandwidth at very low RPM's.

Thanks Tommy for your reply and help.

So, should i just buy a 7i76E (or 5i25 + 7i76) and be 100% sure that it will work properly?
If so, would you recommend the 7i76E or the 5i25 + 7i76 plug & go kit ?
I have spend a lot more already than i have planned to do, thats why i wanted to safe some money, because i had a BOB already from a other build, but to be honest, the 275€ might be a good investment. I would just need to know if i should order the 7i76E or the 5i25 + 7i76 Plug & Go kit
Thanks in advance

Yes it will work properly, i have a big router working with a 7i76E for several years, never missed a beat, and there are plenty more in use every day all over the world. It is a very good investment, it has terminals for everything so wiring it is easy.
Given the choice i would always choose the 7i76E.
You can also get a 7i92 (eth) or 5i25/6i25 (PCI/PCI-E) and later get the 7i76, but not worth the wiring and changing stuff later on. Without 7i76 you would have very limited spindle controls or would need to add some relays and stuff.

Again, thanks a lot for your help and the explenation.

Ordered the 7i76E just a minute ago and hope it will come soon.
Until then i will have no questions and i think when it comes i will be able to find a lot of informations here in the forum to get it to run, at least i will try it.

Thanks again

If you search the forum here, for my Spaceship plasma build thread about 3-4 pages in there is a step by step illustrated guide on how to set up a MPG on a Mesa 7i76e. Just do it again for a second control.