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It looks like I had a misplaced closing bracket as these two lines were outside of the while loop. setSteps((stepsPerDiv + adjustSteps) * 2, 1); printDivideVals(thisDiv,gAngle); In the original code, these lines were both repeated in each case statement but if I had of left...

Photobucket for years has had a bandwidth limit and if you go over it, you have to pay. About 5 years ago, I went over that limit and signed up to pay about $30 a year. I now have over 5000 photos up there and every photo I take on my phone is synced to photobucket. I still only have consumed...

Guys, I'm not sure what I got wrong. I'll have another look at this. Cogsy, yes I hate working with floats too. What I wanted to do is to determine if divLeftOver is a positive or negative number and there are other ways to do that. Before I started, I modified the code to eliminate a couple...

Foozer and Captain_Obvious. I have revised my goDivide() procedure in an attempt to fix this bug. Please check this thread http://www.homemodelenginemachinist.com/showthread.php?p=294834#post294834 for an updated goDivide() procedure which hopefully fixes this problem. Tye cutting and pasting it...

Hmm Captain_Obvious reported a not so obvious bug in my software that bit where a rotary table has a coarse resolution. Where say a division required say 100.333 steps per division, the number was rounded to 100.0. This meant on say 36 divisions around a complete circle, the final division...

If its bang on one setting, and off on another, it is most likely my bug but you should be able to calculate the error and compare your result. You should find where its bang on, the divisions will have a whole number of steps. You could also try Chucks script as I think he moves up or down...

Some of the pedals I've seen have additional control knobs on the pedal itself. You'd probably get something for <$100

I think software can account for some of the error. I developed this on a 90:1 table with 18,000 steps per rev. I think your table is 1200 steps per rev. The base unit I use is seconds of a degree so there are 1,296,000 of them in a circle. Angles are entered as degrees, minutes and seconds...

I don't know anything about TIG but I thought that on some machines you could set the maximum amps at the peddle. Can you do that?

Are you still using my script? What happens if you enter an angle rather than the number of divisions? (eg 10 degrees = 36 divisions)

It would not be hard. You'd need two 2 spare ports. One would be an output to enable the brake. When it goes high (+5v), it would trigger the actuator. The other would be an input that would tell the Arduino the state of the brake (on or off). You'd just need to make sure the current handling...

Looks great!

I also have an experience with a failed 48v Chinese power supply but there may have been some user error involved. It was replaced under warranty after I returned it to an Australian address. But by the time it arrived, I had bought a quality Meanwell power supply. I use these CB microphone...

Don't forget that my controller supports multiple devices numbered 0-n (limited by memory) so if there are different parameters between your two rotary tables, you can set one up as device 0 and the other one as device 1. Then just select the correct device config as you move from one machine to...

They are a very good driver. In my view superior to the Geckos and 1/3 of the cost. Thanks for the feedback. I'm glad you like it. A rotary table controller seems to be a popular starter project for Arduino loving machinists. They don't realise to do it well, some advanced programming...

Can you disable the decay mode totally? With the Geckos and Longs Motor drivers I've played, with decay mode does not exist and they have performed flawlessly with both Arduinos and LinuxCNC

So assuming you are not loosing steps, and your gearing parameters are accurate, I would try turning the dividing head one revolution and measure the error. Then (and you may need to modify your script to do this), rotate the dividing head 10 turns and measure the error. if one reading is 10x...

I think you are missing steps, probably when starting up when there is insufficient power to overcome the initial inertia. Also, 24 volt is not high enough (I first started with a 19v power supply). I would strongly recommend you order a 48 volt power supply to go with your new driver. I think...

I thought I'd just poke my nose in after reading about concerns regarding accuracy when dividing. You should not be using floating point maths anywhere because you will end up with accumulated rounding errors. It like using a micrometer with a coarse scale. Accuracy can not be better than 0.5...

Its been a while since I updated this build. My finger came good and I brought the fabricated plasma table home so I could keep working on it as it would never happen at work. And I married up the gantry but it still needs all of the stays fitted to secure the gantry to the gantry ends...