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My Angel Eye headlight surround. Still going strong after about 5 years

If I was going to do this I would borrow a page out of LinuxCNC and use a variable that sets the desired scale and a four position binary coded rotary switch that sets the scale (eg 1mm, 0.1mm, 0.01mm) So then for every click of the jog wheel, you move enough steps to move the axis the distance...

Sorry, its been quite a while since I've been on this forum and missed the last couple of posts. Anatol, thank you very much for your compliment and additional descriptions. For others like Shehan Perra, I don't know how many times I have said that the Arduino is not Plug and Play, The...

I don't appreciate multiple requests via PM and on multiple threads. Your PM was devoid of manners. There is only 4 wires required to drive a stepper motor driver from an Arduino, 2 of them are +5v and -5v. If you can't work it out, you should not be attempting this project.

If you really get stuck with pin assignments, there are some equates in the top of the main code. I've got a feeling you'd need to overwrite the first few bytes of the flash memory from a different sketch or it will keep reading values from there. Look in the Arduino docs for an example of...

If you just want to drive 1 axis, you could use my Arduino controller which supports linear motion. http://www.homemodelenginemachinist.com/showthread.php?t=25091 But if you wanted to get into CNC, you could consider Grbl on an Arduino which has a subset of full blown CNC Gcode control. For...

What sort of stuff did you order?

Personally, I would not bother about backlash compensation for indexing on a rotary table. Its easy to work around just by taking it up before you start machining and always move in the one direction just like we take up backlash on a manual machine. The only time it could possibly be an issue...

C is a case sensitive language.

I think Cogsy has given a fairly good explanation of consequences of getting types wrong. The term is not "type conversion" but "type cast". eg : float f: int i = 13: f = ((float) i /2.0); // adding brackets around stuff like this is always a good idea. Mixing types should generate a warning...

You guys are getting caught up with overflow of the datatype. As said an int can count from -32767 to +32767 so if you add 1 to 32767, you get -32767. 400 * 72 = 28,800 which is getting up near 32767 so you can't go past 400 steps per rev. If you use const unsigned int, you get to count from 0...

Its not uncommon to have problems with setting up USB serial ports on a Windows machine regardless of who made the chipset. If you have a poke around using Device Manager, you can often find the correct COM port in the Arduino IDE. Sometimes though you will need to install the correct device...

If you measure a commercial fastener say M8,M10 or M12 you will find the diameter is around 0.2mm less than the quoted size. I think if you look at the appropriate ISO standard for bolts, this is expected. So these days, I always make sure something is under or oversiszed, particularly when...

Well I stand corrected. I took my problem part to get some ideas from a mate. It turned out to be a 1/4" BSP parallel thread. So all I have to do is to slightly modify a commercial pipe fitting and silver solder it on! Very happy that a $5.50 fitting and 10 minutes on the lathe will do exactly...

If you have a good to imperial drill conversion chart, you can usually get away with using a number drill for drilling holes to be tapped metric. A good set of metric drills from 1mm to 10mm in 0.1mm increments also costs an insane amount even in metric countries.....

I buy a lot of Metric bolts, around $500 a month... There are two common or standard metric threads: Metric Coarse - the standard thread used on most bolts Metric Fine - a finer pitch often used in motor vehicles When you see M2 or M4 it refers to the coarse thread so M2 x 0.4 and M4 x 0.7 as...

Or just get a higher voltage power supply. Lower inductance generally means higher cost so choose your options carefully to stay in budget. Regardless of the inductance, doubling the voltage more than quadruples the torque.

Very nice idea. Just for fun, try taking the finish through to about 1000 or 1200 grit with wet and dry (I use kerosene instead of water as it keeps the grit cleaner), then finish it off with some metal polish on a rag. I used Autosol from a car parts shop. This will give you a mirror finish. I...

Don't overcomplicate things. If you are going to upgrade hardware, don't stuff around and go with 48 volts. It is common to send much higher voltages to the drive than what the spec says. I can recommend 2 quality drivers but the Gecko is the smallest so it might be easy to fit in an...

In my experience, even 24 volts is not enough. Go 48 volt if your controller can handle it!