Tb6600?

[jtar40]

For anyone who has, had or knows anything about it, is there any specific break out board I should be getting with this uc300eth? I don't know much about them, I think they're generally the same but I'm not sure. How does it work with the software, interface and Bob? Are you able to set up individual pins on uccnc? Or do you need a specific break out board that is set up for the uccnc software outputs?

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[driftspin]

For anyone who has, had or knows anything about it, is there any specific break out board I should be getting with this uc300eth? I don't know much about them, I think they're generally the same but I'm not sure. How does it work with the software, interface and Bob? Are you able to set up individual pins on uccnc? Or do you need a specific break out board that is set up for the uccnc software outputs?

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Hi Jtar40,

the uc300eth is mach compatible and uccnc software key is available for a lot less.
Also checkout the bob UB1 from cncroom.com

Grtz Bert.



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[picclock]

Have you looked into stand alone controller like the DDCSV. Current price is similar to uc300eth, but it includes the computer part. So you upload the gcode to a usb stick, plug it in and it runs. Also works with a pendant.
Might save a lot of interface pain :-)
Best Regards
picclock

[Doddy]

For anyone who has, had or knows anything about it, is there any specific break out board I should be getting with this uc300eth? I don't know much about them, I think they're generally the same but I'm not sure. How does it work with the software, interface and Bob? Are you able to set up individual pins on uccnc? Or do you need a specific break out board that is set up for the uccnc software outputs?

The UC300eth has 5 discrete ports and one analogue port.

Two of the discrete ports (2&3) mimic the standard LPT/parallel port, and because of this you can easily use a standard parallel Break Out Board to interface to either of these. The signalling is pretty standard - 5V levels (outputs are driven by 74HC13s, interfacing the onboard 3.3V logic of the UC300eth with the offboard signals at 5V; inputs are coupled via a resistive divider networks to drop the 5V input to the onboard 3.3V), but the nature of this is such that a BoB of some description is highly recommended to avoid any problems with spikes/noise etc driving or damaging the UC300eth (and the UC400, for that matter). The UC300eth is supplied complete with a cable to allow one of the ports 2 or 3 to be directly wired to a standard parallel/LPT BoB, and you can buy more cables easily (26W-IDC to 25W D-Type).

Ports 1, 4, 5 are different - they each present a significant number of inputs (13) and a small number of outputs (4) with the same signalling as ports 2&3 (74HC13 driven at 5V, resistive divider on inputs). A standard BoB cannot be used on these ports. This is where the UB1 provides a significant benefit over standard BoBs - providing a configurable (24V/5V) opto-isolated interface to the inputs, and a buffered driver for the outputs. The UB1 also provides an interface for the analogue port - providing two separate isolated analogue outputs to drive e.g. a spindle speed interface.

The UB1 also provides the necessary 5VDC supply to the UC300eth.

The UB1 is, without doubt, a decent interface between the UC300eth and a machine, but it's worth checking that you need the additional support required for the non-standard LPT ports, as it clearly comes at a price.

At this time, my own build can use the ports 2&3 with standard (cheap) parallel/LPT BoBs, and I'll reserve the use of the additional capabilities for a later use (if at all).

I am tempted to throw together a rugged I/O - or BoB board specifically for these ports and publish the board design through Seeed/DirtyPCB to allow anyone to build their own.

Regarding the software etc, the UCCNC - it is configured that it understands the respective inputs and outputs on each port, and you can program these with the required functionality (i.e. designating an input as E-Stop, or an output as a motor interface, or otherwise a standard discrete output). You cannot, however, change the type of interface (e.g. change an input to an output) - that is hardwired on the UC300eth.

[A_Camera]

For anyone who has, had or knows anything about it, is there any specific break out board I should be getting with this uc300eth? I don't know much about them, I think they're generally the same but I'm not sure. How does it work with the software, interface and Bob? Are you able to set up individual pins on uccnc? Or do you need a specific break out board that is set up for the uccnc software outputs?

You can use any BOB with the UC300ETH. Personally I have two of these:

https://www.ebay.com/itm/Geekcreit-5...item4b40cb55d4

There is no need to buy a 180$ BOB unless you know you'll need it, when you can get it working just as well with a $5 BOB. I know that just like in the case of digital vs. the 542 drivers some people will disagree, but so be it. As a student, you will be ruined if you follow some peoples advice, so be careful when asking on a forum.

Of course, if you plan on building and industrial machine then buy only the best, but if you have a hobby and/or if you have some budget restrictions then the cheaper alternatives are not necessarily worse than the $180 UB1.

[Clive S]

You can use any BOB with the UC300ETH. Personally I have two of these:

https://www.ebay.com/itm/Geekcreit-5...item4b40cb55d4

Even cheaper:-

https://www.ebay.co.uk/itm/5-axis-CN...72.m2749.l2649

[A_Camera]

Even cheaper:-

https://www.ebay.co.uk/itm/5-axis-CN...72.m2749.l2649

Yes, definitely. I paid $5 for mine. Works perfectly since several years.

[driftspin]

Yes, definitely. I paid $5 for mine. Works perfectly since several years.

Hi A_Camera.

You are making me doubt if i need an usd180+tax bob like the UB1.

I was already thinking ... maybe do a bob like mentioned above and upgrade later.

It wil pay for the better part of the of the spindle and vfd.

Can you do a pro's and cons on the ub1 vs 2 of those bobs from your point of view?.. i need 4 stepper driver outputs.

The 1 real con i can find is 25khz vz 400khz. the other stuff can be resolved i think..

So.. less speed or less resolution.



Grtz Bert.

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[A_Camera]

Hi Bert,

I am sorry but I can't write any pro's and cons between the UB1 and the $5 BOB because I don't know the UB1, so I could only compare the specs, which you can do as well. Yes, there are some advantages, but to me they are not relevant and not worth $170 extra. But... CNC Drive have just released a new BOB and that is a more reasonable alternative. If I'd build my machine today I'd probably buy that one. It is a dual port BOB, and it does not seem to have analogue output, so if you plan to control the VFD with 0-10V then you probably need an external PWM card as well. Regardless of which, I think one or two $5 BOB is the way to go for anyone on budget restrictions.

BTW, there is no 25kHz limit, it works just as well with 200kHz also, which is the limit of most of the drivers anyway. 400kHz is the upper limit of the motion controller, but again, with 200kHz you can go very far... The BOB has 74HC14 buffers on the outputs which control the motion through the drivers, so the limit is not the BOB but your drivers. The DQ542MA has a 200kHz upper limit because of the opto couplers on the inputs. I have actually tested them with 400kHz and while they worked well, there is no need for that speed in my machine, so I keep the 200kHz settings.

Also, speed has nothing to do with resolution. The resolution is the same at high speed as it is with low speed.