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All components installed & wired.
I rewired the limit switches using 4 core control cable which meant one less cable & now they're neatly terminated into the new plugs....

I fitted an extra fan to pull heat from the added electronics out.
The G540 was a neat fit into the cd slot with minor mods on the chassis.
There was a gap below that would allow dust & geckos in...

This is the new brain, which originally ran Junkbot.
The front was sripped off & the cd drive removed along with the floppy.
With the cover off the power supply just fitted in the...

I agree with Lappa about the reduction drive, my table uses approx 22.5/1. I also found it essential to tune the motors to avoid stalling.
Either that or a whopping motor.

Sent from my SM-T813...

Hi all,
Its been about 7 years since I completed the build of Junkbot & 6 years since my last post on this forum until I logged in again last week.
Junkbot has been faithfully hacking away, mostly...

Thanks, I eventually found it a few minutes ago.

Sent from my SM-T813 using Tapatalk

Hi Greolt,
I can't find the marketplace but am interested if you still have it.

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I've generally built things straight out of the model in my head, finding it's quicker to adapt & change design along the way.
Having said that, I often desired a more structured planning approach...

If you really want one start dreaming of the space for it...that'll be the easy part.

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G'day Rod & all,
This is my first post here for many years as I'd drifted off with other projects & its great to see so many familiar names from whom i drew so much knowledge & inspiration from...

G'day Pete,

Here is a link I bookmarked some time ago for a how to on setting up a touchplate. cockrum.net Look in the electronics tab.
Let me know if it helps, I'm still using a bit of paper,...

Hey Pete,

Nice job on the build,
Look forward to the next vid.

Cheers,
Tim.

There are two parts to that e-stop system. One connects pin 10 to ground with a NC switch (referred to on the schematic as ENABLE SWITCH) this is low voltage, and the other is also NC on the active...

Hey There Pete,

Sorry about the delayed reply.
The limit switches will need to be wired in parallel ie. one side of each switch goes to ground either on the G540 or your power supply. The Homann...

Hey Pete, if you are using Mach3 I can give you a quick 'how to' for setting the home and limits.
One direction is limit and the other is home for each axis. You choose where you want home to be and...

Harry72, I fear that you may be mostly correct, but great for browsing:U

That's great Peter,
I'd be honoured to be your 'Tester'.
I don't believe the delay will be a major issue as according to my quick calculations at a feed rate of 10m/min (which I believe is close to...

G'day Pete,

I use a G540 and Bob is right. You are also correct about needing a switch for each end of each axis, but these are usually connected in pairs, hence the 4 inputs for the 4 axes on the...

Thanks very much Mike and Peter,
I am greatfull for the help thus far. If I wasn't so stubborn for DIY I would have just bought a height controller by now as they are not that expensive, but from...

I had a little time to hook it up this arvo and took video at each stage.
I am using the brain as the scope.
The cable from the plasma is shielded and grounded and makes up most of the 10 meters...

Thanks Mike,

I now have it set up on the breadboard so that it's easier to see what's going where. The pot I am using is a 1K ohm 10 turn so it should give me enough resolution for tuning I hope. ...

Niiiiice just got Forumrunner free. Now I have my fav forums in my pocket all day.
Thanx

Any chance of an Android app for those of us who are highly mobile?

In an effort to find where the noise on the inputs is coming from I began disconnecting everything from the ModIO starting with the inputs until everything was disconnected, but with nothing...

Try this to jog your memory or learn about it. I haven't nearly mastered it yet.

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What version of Aspire do you have? I think there is a good tutorial on the disk of either...

Thanks very much Dave and Mike for the replys,

You are both welcome to drop in any time:D

I have run out of weekend for tinkering and will be away for most of next week for work, but next...

Perhaps you can use your machine to turn them as well by drawing the profile and using the 'two rail sweep' feature in Aspire and wrapping around an axis. Or it may be possible to mount the pen once...

After spending most of the day trying to figure this out I almost have it working, but the ModIO doesn't see the input voltage the same as my multimeter.
Using my electronics know how (0) + my...

G'day Russel,

I have wasted a fair bit of money on overpriced and unsuitable bits and now have a short list of useful ones. Keep in mind I only have 1/8" and 1/4" collets. Solid carbide is the way...

Provided your pen is a perfect cylinder or you can draw the profile of the shape it should be do-able on a rotary axis with Aspire and I think V-carve pro also does wrapping.
There is probably other...

Thanks for the words of wisdom. When I discovered I had no signal after measuring the voltage output from the plasma it was opposite polarity to what I thought it should be, so I reversed the...

Today I finally got time to build the input circuit and hook everything up for some testing. After a short time I could see in my brain there was no input signal coming from the plasma. I started at...

Thanks Geoff,

Their joysticks are very well priced, but with our dollar the I-pacs and buttons are a little exey.

Cheers

Strange you say that about the G540. I was worried for a while with mine at the beginning and even messed up the current limit resistor values and was running max current with no limiting until I...

Been a while since I set mine up, but I just skimmed back through the users manual, and I also read the part you quoted on the web and unless your motor spec sheet lists the parallel and series...

Apologies perhaps I shouldn't post so close to bed time.

Ultimarc

Thought I'd post this link for anyone considering a console build.
Although I haven't bought from them, the guy I've been cutting out MDF arcade machine panels for with the router has had good...

Sorry but again with the questions,
If I have the 400mw zeners can I use 2 or 3 in parallel to offer the same protection as the 1w?
Also, I'd say the spikes I saw are more of the speeding bullet...

Thanks again Mike.
As usual I have more questions. Today I made the cable and measured the voltage over a range of fairly extreme conditions.
I found that the voltage runs between approx 2.5 - 4.0v...

Bob is quite right, it is a very open ended question. My machine was built from guesswork and cost cutting and although it works, it is much less than ideal in oohh so many ways.
I understand that...

Thanks Mike,

I will bear that in mind. As soon as I get the cable sorted for my plasma I will try to measure the output from the built in voltage divider over a range of cutting conditions to...

Nice build, can't wait to start on a full sheet one.
I had the same problem with my stick welder, changed welders, still the same, changed rod brands 3 times, still the same. Thought it was me by...

Thanks Guys,

Peter the input producing the 7V is the internal voltage divider in my plasma cutter.
Steve I will use the complete schematic since I already have all the parts.
Cheers,

Tim.

Interestingly, I have problems reaching the recommended cut speeds required for much of the plasma work I do on <3mm sheet on my gantry machine but can easily reach the maximum speeds I can route at....

G'day Guys,

I have a 0 - 7V analog signal which I need to limit to near 5V max so it can be used as an input on the ModIO.
Electronics is not one of my strengths so I'm not sure of the best way...

I have seen two of these. One is a monster that is hardly used at a TAFE College, and the other is a smaller plasma in a local boilermakers which is almost identical to the one in the link (although...

Thanks for the input.
I did come across this button in one of the Mach screens since you mentioned it Russell. Never noticed it before so this is the type of thing I was hoping for because I know...

The new 1/4" 60 deg V-bit arrived yesterday, can't wait to try it.
The one I used on the Dragon was a tree shape dremmel bit with about 10 flutes/teeth about 4.6mm at widest on an 1/8" shank. I...

Hi Bob,
Actually it's about 280 x 120. I used to include a cigarette lighter in photos to give an idea of size, but since I quit smoking I don't keep one handy and since I have no money I couldn't...

I was itching to try this after seeing the ones at the bbq.
I thought I had been much too ambitious with the choice of design, and was certain it would turn out to be a waste of a day mucking about,...