New start

[Nr1madman]

Some questions for you all :)

Have had no time in the shed because of sick kids so no progress, only planning.
Thinking/planning the electrical stuff and think I have the normal stuff sorted out like psu and motors..

Question 1.
Enable signal to drivers.
Should you use it and why? As I understand it it's normal to skip it? Do understand that you can use it to clear driver errors if they should occur..?
If I should choose to connect them it's just 5v to ena+ and parallellconnect ena- to the enable port on the bob?

Question 2.
I have this Chinese bob


And I found a nifty schematic here on the forum. Think it was Jazz who posted it. It says how to connect the bob to the vfd to control it via software. On/off and rpm via 1-10v. Have the HY vfd so have to change parameters pd001 and pd002. It sounds good! Then I found this schematic from routercnc

Here he has buttons and relay to start/stopp and a pot for speed. This appeals to me as I love panel buttons but I want to have the software option as well :)
Is it possible to connect both kind of systems?

Question 3.
Was planning to follow a schematic from jazz for the general safety layout. Bet it's familiar to you all

Then I found this from eurican (spelling might be off here)

Here he has a switch for the limit override and a buzzer so that he doesn't forget to reset it to limits.. is this safer than the momentary switch in jazzes schematic? Or just that you don't have to hold it in while jogging off the switch?

Thank you for your thoughts :D

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[Nr1madman]

Will answer myself :D

Question 3, reread euricains thread and found the same discussion. (Maybe that's why I had the question from the start hehe)
So if you can reach it's better with button instead of switch so you don't forget!

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[Nr1madman]

Another questions for you all!

Will have my pc in my controlbox.
Is it safe/okey/good practice to use 5v from pc psu or should I use the nice chinese psu that I have bought?

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[Nickhofen]

I use to take the 5volts from my pc's USB port for my previous cnc and it still works fine this way, at the hands of his new owner.

[Nr1madman]

I use to take the 5volts from my pc's USB port for my previous cnc and it still works fine this way, at the hands of his new owner.

Good to know :)

It seems like a easy option.
I don't know why it's recommended to not use usb to power bobs.. If it's unreliable volt levels or if it's a grounding problem with loops or something?

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[Clive S]

Another questions for you all!

Will have my pc in my controlbox.
Is it safe/okey/good practice to use 5v from pc psu or should I use the nice chinese psu that I have bought?

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You don,t say what you want to use the 5V for!! or what psu you have bought. looking at the BOB that will need 5V and 12-24V to run the 5V could be got from the usb. Personally I would have a separate 5V PS.

[Nr1madman]

You don,t say what you want to use the 5V for!! or what psu you have bought. looking at the BOB that will need 5V and 12-24V to run the 5V could be got from the usb. Personally I would have a separate 5V PS.

Haha you my friend are correct :)

The only thing I got planned for 5v is the Bob and it's signals to the stepper drivers ( pul dir ena )
I've bought a 5V 2A psu and still thinking about using it. If I were to use the pc psu I don't think I would connect usb but get 5v from a Molex harness. That way it's straight from the psu and not through the motherboard. If that makes sense??

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[Desertboy]

Haha you my friend are correct :)

The only thing I got planned for 5v is the Bob and it's signals to the stepper drivers ( pul dir ena )
I've bought a 5V 2A psu and still thinking about using it. If I were to use the pc psu I don't think I would connect usb but get 5v from a Molex harness. That way it's straight from the psu and not through the motherboard. If that makes sense??

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That's how I set mine up.

[Nr1madman]

That's how I set mine up.

Leaning towards this aproach because pc psus are supposed to be stable!

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[Nr1madman]

Small update!

Trial fit of some brackets for energychain.
Still need more paint on them but good fit :D





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