Thanks Nick!Quote:
Originally Posted by Nickhofen
Hope it works well ;)
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Thanks Nick!Quote:
Originally Posted by Nickhofen
Hope it works well ;)
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It will!!!Quote:
Originally Posted by Nr1madman
Why you are not satisfied with the UC300 usb version?
Here at post#158 Jazzcnc explains why the usb version is better than the parallel one.
http://www.mycncuk.com/threads/10911...655#post100655
The usb version is more vulnerable to signal loss and interference than the Ethernet version.Quote:
Originally Posted by Nickhofen
Both are better than paralellport.
But I'm sure the usb version will work fine for my needs.. as I'm only running 40cm of shielded cable mounted to the motherboard it should work flawless :D
Now I have to research what other BOBs or relays I want/need for running extra equipment such as lights and dustvac and such :)
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UC have a USB or ethernet solution, Jazz was comparing using a PC with PP for step generation. UC cards are step generators. It gets confusing because like me nr1madman is using a cheap PP BOB to connect to the steppers, switches etc.Quote:
Originally Posted by Nickhofen
but the connection to the PP BOB is running a lot faster than if it was a PC PP. A few people have warned that using that cheap board will limit upper performance but I was told you will be able to run at least 50khz per axis with that cheap board connected to a step generator if you need more you need a better breakout board. For my Mesa card it's £100 for the better BOB so I'm happy to use my existing BOB for now and 50khz is actually a lot depending how you set microstepping.
And just to clarify (I have no clue)Quote:
Originally Posted by Desertboy
If running 1600 microsteps and 10mm pitch screw with the standard 200steps/rev motors.. how fast will 50khz get me? :D
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LOL I'm going to run 16 microsteps ;) so 100 times lessQuote:
Originally Posted by Nr1madman
Jazz is the man to ask but I think
50000*60 == 3000000 pulses per minute /1600 = 1875 revolutions per minute I think, times that by pitch for distance.
Hmm... I might be over thinking this!Quote:
Originally Posted by Desertboy
Maybe I was thinking about 1600 pulses so 8 microsteps per step.. have to rethink :D
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That's ok because I should have divided the last one by 200 ha ha ha forgot the steps.Quote:
Originally Posted by Nr1madman
Alright.. now Im really really tired of wires :D
Got the pc working and installed uccnc sucessfully!! Makes me want to scream in joy!
As Ive said before Im following a schematic I found on the forum.
But in this schematic the limitswitches power a relay and this enables a signal to the bob.
Shouldnt the limitswitches be connected with the estop circuit and stop the main relay from latching?
That way the power would be cut if a limit is breached?
Otherwise the axis that hits a limit might continue if there is software malfunction?
Do you have soft limits as well? It's all debatable but hitting the limits say while jogging should not (in my opinion) be an E-Stop as it is not an emergency
Robert in the name of Odin, can you share the schematic, or point the thread? :-)
This is why I would always recommend running soft-limits. IMHO the type of machine decides the limit system used - A stepper drive is safe if it runs away and hits a stop, the steppers will stall so I would forget limits altogether and fit a home switch plus soft limits, nothing more.Quote:
Originally Posted by Clive S
On a servo drive, mechanical breakage is very easy so i would fit hard limit switches wired to the servo power/estop circuit contactor, forget the software, just kill the power. Then fit a home switch and use soft limits to ensure you cannot jog into a limit, ever.
Aha! Good reasoning :)Quote:
Originally Posted by Davek0974
Then I feel safe with my steppers!
Limits to the bob only and no messing with e stop!
Thanks :D
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Haha I stole this one https://image.ibb.co/jthYfG/tapatalk_1511816242127.jpgQuote:
Originally Posted by Nickhofen
Mostly what I'm aiming for but slight modification.
Have routed the enable signal straight through the main relay instead of using two relays.
Have not understood the logic of using two relays yet..
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There's more to it than just speed. Best way to I can relate it is to compare to HIGH end HI-FI Amplifier. You wouldn't dream of fitting cheap speakers to quality Hi-Fi because it would just degrade the sound and make it sound rubbish.Quote:
Originally Posted by Desertboy
Cheap BOB is just like cheap speakers, your putting clean quality pulses in and the rubbish circuitry is degrading what comes out. Still comes out at same or similar speed but now it's all noisy and crackly.! . . . . Defeats the point of External controller..IMO.
The quality of the pulses you put into drive directly affects how smooth the motors work and it's clear to hear the difference when have bad setup.
Thanks!Quote:
Originally Posted by JAZZCNC
That was a good explanation..
I guess that's why a good bob costs 50 times more :)
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Where did you find that because I'm sure that's one I've drawn up in the past for someone or modified version of it.! . . . . .Not bothered that you have it just curious where or how it got there.!Quote:
Originally Posted by Nr1madman
Its in the forum, think the user is euricain?Quote:
Originally Posted by JAZZCNC
I was thinking about using a much simpler schematic from you but this appealed to me.
Routercnc has posted a schematic aswell that I've studied. It too has advantages!
Since I'm feeding the stepper drivers with ac I dont need the bleeding resistor for the capacitance bank that routercnc had incorporated..
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After reading Jazz's post I've took the plunge with a 7i76 BOB for my Mesa in the end it cost £140 delivered so that estimate was pretty close lol as my PP BOB cost £3.Quote:
Originally Posted by Nr1madman
http://store.mesanet.com/index.php?r...product_id=119
I'm sure UC must have equiv you might even be able to use this board lol.
For reference it's cost £250 for the complete mesa controller, pci card + bob with high quality cabling.
I'm sure the mesa boards are top quality but that would mean Linux?Quote:
Originally Posted by Desertboy
Not for me my friend :D
Is fusion360 still free?
Seems like only for students now?
Tried estlcam now this evening and it seems basic but powerful !
Anyone tried it?
Or should I hold on with the software and focus on getting movement first ;)
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They actually started making plugins for mach3 but never got past the beta phase it was working but the last posts on the mach forum are 5 years old so one would assume it's been abandoned. Given they had it working it seems a shame they didn't finish the work and bring it to market.Quote:
Originally Posted by Nr1madman
Fusion is still free
https://knowledge.autodesk.com/suppo...usion-360.html
It's annoying that the controllers don't support both linuxcnc and Mach3 it seems it's a case of supporting one or the other.
I totally get the linuxcnc thing you have to be a sadist to go this route but I've been a casual linux user since 2006 for 6 years I never ran anything else but when I got into cad I had to go back to windows. Also I grew up with a dos prompt so linuxcnc isn't quite so scary.
Now I have a couple of machines running linux and a couple running windows.
This is a link to the current website - still looks to be free for "enthusiast" (home/hobby) use.Quote:
Originally Posted by Nr1madman
Thanks to both of you :D
I must have clicked wrong to get to the educational license...
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NO 100% NO the sooner you learn the Software side the better, both Cad/Cam and controller. Think of it like giving a Kid toy for Xmas without any batterys.Quote:
Originally Posted by Nr1madman
Nothing worse than having working machine then saying "Now what.!!!"
Im actually starting to get some good results in solidworks for CAD.Quote:
Originally Posted by JAZZCNC
Tried fusion before and will give it another try.. tried rhino aswell but that was hard!
For cam Im really liking estlcam. Played some with cambam but it's not working out like I plan ;)
Uccnc will be another thing! CAD and cam I can do indoor with the wife and semi communicate with her while learning. Uccnc is in the shed with the machine so any time spent "learning" will be time away from wife and kids. That's gonna be something to make up for :D
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You need to be more annoying then your wife will send you to the shed to calm down ;)Quote:
Originally Posted by Nr1madman
Just wanted to ask, since it might be your schematic.Quote:
Originally Posted by JAZZCNC
Why does the enable signal go through two relays? The coil of the enable relay is driven through master relay.. Why not take the enable signal straight to the master relay? ( I've done this temporarily now)
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In all honesty I don't know. It's not something I would normaly do so maybe the OP added it. You certainly will be fine running it thru master relay.Quote:
Originally Posted by Nr1madman
The reason I think it's mine is because there are parts of it like the master relay which I drew and recognise. if you notice there are 6 contacts but it states 4PDT. However there are bits I don't recognise and wouldn't use, like that enable relay, so maybe I've helped someone with basic setup which I often do then they have added to it.?
Uhu!Quote:
Originally Posted by JAZZCNC
Just got to thinking about enable.
Doesn't do very much to have it through master relay as the e stop already is in that loop.
Estop would cut power to drives so no point in cutting enable as well?
Will remove it :)
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To be honest I never use the enable on steppers unless I want to keep holding torque on motors. For instance in Limit situationQuote:
Originally Posted by Nr1madman;
Limits are not an emergency situation so no reason to kill power to the drives but sometimes, like with a heavy Z axis, you will want to keep holding torque.
In this case I'd use the Enable in series with Limits.
Otherwise, I just don't use it because of not much point with steppers.
Sad and unsatisfied update!
Had 20mins over today so I ran to the shed.
Realized I read the connections wrong for the relays. Reconnected and got the master relay to latch with start button. And disconnect with e stop!
Problem 1. Something is wrong, when I e stop I kill power to 5v psu . This makes my uc300 disconnect from pc and a restart is required for uccnc to connect with uc300 again.
Will look over the wires and reconnect with 5v outside of that loop.
Problem 2. Red fault light is on at all 4 drives.
Guessing it has to do with the enable signal.. since its not over or under voltage (get 50.6v ac at drives they take up to 80v ac or 110v dc) and no holdingtorque so no over/under current. Have tried enable through bob aswell as running ena- straight to gnd.
This could have something to do with my bob aswell? The bob has a green led shining by the 12-24v sign. But a red led right by the 5v pwm text.. is this normal or is it a error?
And another question!
How do I know the port nr to use in uccnc?
Easiest to connect switch and watch in ports and pins whats flashing? :)
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Go back to basics. Disconnect the enable wires and see if they come on.
Unless your 100% sure and confident that the schematic you have works it's always a good idea to wire in stages. Start with just powering up and seeing if latching system works and you have power to right places at the correct voltages.
Then start introducing things like enable or fault monitoring etc.
Ideally you should have written down all the I/O pin# your using and what's connected to those I/O #'s. Then when you have any trouble you can start tracing wires from that Pin# back to it's device. Makes trouble shooting so much easier.
You are of course correct :DQuote:
Originally Posted by JAZZCNC
Will go back to basic when time is available!
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Im an idiot!
But a happy idiot :D
Got the drivers powering up WIIIHOOO!
Sad to say I did something wrong with the steppers. But after some old fashioned anger I found what I did :D
Have adjusted two motors and can now claim some kind of movement on x axis!
Two motors left to adjust and then I might be getting real movement! Yeah!!
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The first movements on the first router builder are all the sweeter because it's when you get to see if you actually got it right ;)Quote:
Originally Posted by Nr1madman
I didn't do it right but got it working after some anger and madness :DQuote:
Originally Posted by Desertboy
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It's called learning.!!. . . . Unfortunately, some learn in harder ways than others but it's all good fun.:thumsup:Quote:
Originally Posted by Nr1madman
Yeah!Quote:
Originally Posted by JAZZCNC
Wouldn't have happened without you all.
The people in this forum are amazing,
I'm not really there yet but thanks for all the help so far...
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If anyone have the same problem as I had with uc300usb and e stop then I think I found a fix.
I hadn't made an error connecting it but it had a jumper that controlled if it was powered via usb or external 5v.
I had it on usb supply apparently and this somehow got triggered by e stop (interference or current surge/dip?) Causing the controller to loose connection to uccnc.
Now I have tried it with power from stable 5v supply and nothing happens with the connection when e stopping, well except the pc senses e stop as it should :D
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That's USB for ya.!!. . . . Like Box Chocolates.?Quote:
Originally Posted by Nr1madman