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In our maker space, we have a CNC router table rebuild going on that uses the Avid motor drive and a R&P setup. One of the members wants to mount the rack with the teeth pointing up so that he can...

I thought I would build a lift from available plans, but…
Here is a DIY computer controlled router lift that was a really satisfying project.
Made for a drop in router table and uses a stepper...

I responded to Michael on the Digital Machinist forum.

However, as Michael (and others) have pointed out, sometimes the keys on the inexpensive 1602 LCD shield does not work as well as we would...

Rich,

I have made a 2.4 version that has the changes to produce an output pulse on A3 (the analog in lines can be used as digital outputs - there are very few pins left on the Uno) for a duration...

Depending on the material (stainless would be far worse than brass or aluminum for example) or depending on the angle of the cut (a straight cut would be a bit less problematic than an angled cut)...

Increasing the microstepping might help a bit here due to the resulting increase in wait time, but accel/decel would not, I believe. Adding additional gearing in front of the 40:1 (like a 2:1 ratio...

It could, but it would be a fair amount of work, so I think I would need to be convinced as to why this is needed. Typically, there is so little movement as well as so little load in going from one...

Hi Brenda,

Looks like an interesting project. It will be interesting to see what you come up with!

I didn't remove the switches, I thought that would be way too much trouble. I just soldered wires on the switch solder pads on the PC board to wire the panel switches in parallel with them. IIRC, I...

Good questions.

Wow, Dev - the control goes from 5 to 16! Is that like Spinal Tap's amp going up to 11?


Just kidding - it looks like a very nice job - how long does the job take - you using any fluid on it...

I've just gotten my VFD/spindle to work, (yea!) and already I find the pot speed control on the panel a bit difficult to use.

Apparently, it is an either/or choice to be able to use a remote pot...

Go here:

Digital Machinist

and scroll down to the Winter 2013 issue and click the DM8.4Liming link to start the zip file download. All versions are included - use the 2.3 one.

Then go to...

Ok, I will post again after its running and I can try some experiments and document the results. Thanks for all the help

Sorry, in my earlier post the 100 hz was a typo, my bad, it should have been 400 hz. Here is my source:

276680
The picture's not great, but in real life you can see it is easily a 400, not a 100....

Ok, I am convinced to use the DRV/DCM approach for the SSR.

Since the rated (nameplate or inked) value written on my motor is 110V, 5 amp, 24000 rpm, 100hz I will try the following after doing a
...

yowza!



I am mystified how you would know that if you were using my manual - there is nary a peep about it!

I think I'll just use a SSR on FB and FC - it says 3-32 VDC on the SSR for...

Glad you got the SuperPID up and running. Cutting a lower speeds sure makes things more pleasant, no?

I am just delving into the spindle world, and I can tell you I miss the friendly, well...

Thanks for that, Mac - I was looking at page 20 of my manual, which describes PD50 as a "Y1 output" and PD051 as a "Y2 output". Then I look on page 40, and they are described as inputs (!?) All...

Thanks, Al.

PD050/051/052.
Al.


The manual says PD052 is for the FA, FB, FC terminals, so to use those, I guess I would set it to 1.

The manual says PD050 and PD051 are for Y1 and Y2...

Perhaps I misspoke. By coolant, I meant the heat exchanger running inside the jacket of the spindle, not something bathing the material being machined. Under what circumstances wouldn't you want...

I just got a VFD (the Huanyang HY01D511B which is the 1.5KW 110VAC one) and looking at the manual it appears there are several ways to control an external device, like the coolant pump which I would...

I am the author of the code you posted as well as the author of the article. So far, many have had this run on first try.

There was a bit of confusion about the pins on the display shield, and...

If you look waaay back on this thread, I made a nice box for my SuperPID, hooked it up and loved it.

However, it is time for me to get a spindle - therefore, the wires, box, optical pickup,...

There is a new version, version 2.3 available from the magazine website. This version allows the denominator for the gear ratios to be defined at compile time. One reader emailed me that he had a...

Very nice knife, Dev! How does the blade holder fit into the shaft? Are there plans or a thread somewhere with the details?

Haven't used one of these, but it has the wheels turning...

What are...

PS You going to the Woodworking in America show?

Hi C1, long time, no see!

How goes building Allegros? Saw them at Oshkosh and thought of you, wondered which part you made - probably engine parts, no?

Made a "wedding box" for a family...

Don't think you'll regret the G540 - I think its a great product.

Any clues as to why the HCNC driver died? Did it or the motors run hot?

Me, I go through routers. Gave up using a SuperPID...

That's not the right URL - tryDigital Machinist » Downloads