Search:

I missed the hexfets question. Sorry but I am using the SLA7078 so I do not have any tested HEXFET numbers as I do not need them with this chip.

I have put all of the step genie stuff on hold as my circuit was working better and I did not want to waste any time setting up a new circuit board. I was having problems with the SLA7078 and my low...

The nc stand for no connection so it is not connected to anything which is sometimes important. DO NOT ground it.

The small capicator is the one in the pdf at the website which filters the 5...

There is nothing strange about it if you understood RF interference and how it behaves. The noise is traveling down the wire and then jumping into your controller through the unfiltered AC input....

Sorry I have a habit of not being clear.

The ferrite goes next to the spindle motor which is the source of the noise. To put it on the plug end would allow the noise to use the wire from the...

The spindle is most probably a series motor that has brushes that cause lots of RF noise. This will get into any other parallel cable. Remove the spindle motor power cable from the spiral wrap and...

Widgit

I have a problem of leaving things out. The end of the table I was referring to was the opposite end from the motor. Let the chuck jaws swing in front of the table end. The rotary table...

Eric

I have my mini cutting aircraft plywood and is it sweet. I also have to do some cleaning and lubing to get it to stop missing steps at over 30 ips.
On the subject of 4th axises. Rings (as on...

Nonsense I thank you.

I am now working on the software aspects of my project with a vast saving in time. I have a machine that is much much much better than I could have built and for about what...

"Well, now that the Mini's are all sold,..."

Hi. I am one of those non posters that Rekd is trying to pull into the conversation with the -where are you forum-. My name is John and I just bought a...

Software that crashes at unsuspecting times causing loss of a lot of hard work. Software that does strange things when a project is late.
Things cost money for a reason.
I haven't tried this...

Yes, as abasir said, that is correct TurboCNC will do it and the schematic is on the website. A little scary with no isolation, so a plug in parallel port card or a 'old' computer is best. I have run...

Geroge
Thanks a lot for the info. I found a operations manual on Ebay no less. Had to get it sent from England and they must have quit usind or upgraded ittheirs as this was the orginial manual with...

This is a possiability but it would be software dependent. There is no reason for the data to come in clumps that I can see. The message to the drives will be small and as long as the whole message...

Some of the print servers can be made to look like a COM port on the computer. I have only seen these in serial types. If you used serial to centronics conveter on the end of that it might work. A...

Alex
Excellent suggestion. Noise may be causing the motors to jump half way to the next step then fall back. A printer I once worked on did this on purpose to get a buzzer sound.

Sanghera
Check...

Patrick
Well said. It gets complicated the more you try to explain it. I find a schematic speaks/explains better than words.

Well my parts have arrived and I must build. I guess I am in the...

The logic circuitry in the chip is a amplifier. It has a unity gain ie. 5 volts in = 5 volts out. As with all amplifiers if the output signal gets into the input, a feedback occurs. Yes that whistle...

Arvid

Let me first say I think you are great for sharing your knowledge with fellow enthusiasts. It takes time to do this an I am sure all of the guys you help appreciate it.

Been doing this a...

To All
NOTICE: Do not use the circuit with SW1 in it as it connects the ciruitry to positive voltage without any current limiting. I have done this in the far distant past and found it allows the...

Gary
Try adding a CD in front of the number as these are CD4000 series parts.
Also the CD4030 can be replaced with the CD4070 without changing anything including pin numbers.

c_nut

The only real difference between serial and parallel and USB is the hardware connector and the software driver. They all do the same job - get data out of the computer. Parallel has a wider path, ie....

I am taking a class at a local college and a Boss 5 is being revived. The card in it that talks 20Ma current loop has a connector that needs to be moved to get RS232 to operate. It was in the docs...

Chris
Is your controlled in a metal case. If it is open the noise can go from the switch and magically get into the electronics right through space, air and plastic. Metal with all six sides closed...

That was power DC. Sorry.

Sanghera

Buy it that way. Most if not all new cables are already shielded.

Just don't run the cable parallel to any cables carrying AC or porer DC. It can cross at an angle but not run along...

Graham S

I was talking about the motor itself, not how it can be used in a circuit. Why buy a motor that has to be pushed to work when motors that are capable of doing the job are available for...

DarkWolf
That stepper is a little too weak for this application. I do a power computation on a motor and if the amps x amps x volts do not equal 2 or better I pass on it. Two is minimum for what I...

You are welcome. I found this during my study of Gcodes. I have another one that will do a scan to gcode conversion. It makes a very large file and not for a minimal machine, but if you were willing...

Sorry I forgot been doing that a lot lately. I think.
Look at the schematics link at http://www.dakeng.com/lathe.html.