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Forum: 80. Computer Hardware & Software Sun 16 September 2007, 12:47
Replies: 90
Views: 185,782
Posted By Richards
Opto-isolators typically have minimum pulse-width...

Opto-isolators typically have minimum pulse-width requirements. Mariss uses good ones on the Gecko products that allow about 200,000 Hz, but many of the average (cheap) opto-isolators would have a...
Forum: 80. Computer Hardware & Software Sat 15 September 2007, 03:53
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, You're making great progess! If you...

Aubrey,

You're making great progess! If you have time, Google articles and books written by Chuck Raskin, P.E.. His book, "Designing With Motion Hanbook II", published in 1992, was required...
Forum: 80. Computer Hardware & Software Wed 12 September 2007, 09:07
Replies: 90
Views: 185,782
Posted By Richards
Heath, I'm having a problem understanding the...

Heath,
I'm having a problem understanding the function of the PIC microprocessor when it is used with Mach 3 software. As I understand it, Mach 3 sends sets the direction signal and then sends out...
Forum: 80. Computer Hardware & Software Tue 04 September 2007, 06:36
Replies: 90
Views: 185,782
Posted By Richards
As Gerald pointed out, full-stepping stepper...

As Gerald pointed out, full-stepping stepper motors have their place. Somewhere on my 'wish list' of projects that I want to tackle 'someday' is a ball-screw driven Z-axis. The main problem is...
Forum: 80. Computer Hardware & Software Mon 03 September 2007, 16:05
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, You're starting to get the whole...

Aubrey,
You're starting to get the whole picture. It's a big task, but, like all tasks, it can be managed if you take it one small part at a time.

One clarification, you talked of switching...
Forum: 80. Computer Hardware & Software Sun 02 September 2007, 12:53
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, If you were building a microcontroller...

Aubrey,
If you were building a microcontroller circuit to feed pulses to a Gecko G203 stepper driver, you would be working with Active High signals. That means that a Step signal starts off at 0...
Forum: 80. Computer Hardware & Software Sun 26 August 2007, 14:06
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, I've been mulling this over since...

Aubrey,

I've been mulling this over since you first posted. My suggestion would be to talk to your potential customers. Explain to them what you will be able to do once you have the machine...
Forum: 80. Computer Hardware & Software Sat 25 August 2007, 23:15
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, It's time to dig out some...

Aubrey,

It's time to dig out some information on "bi-level" DC circuits and Emitter Followers (a way of connecting NPN transistors) and Steering Diodes to control the way that DC electricity flows...
Forum: 80. Computer Hardware & Software Fri 24 August 2007, 15:01
Replies: 90
Views: 185,782
Posted By Richards
You guys are way past me. I was describing the...

You guys are way past me. I was describing the theory behind building a circuit from the ground up, without any "pre-packaged intelligent chip(s)" being part of the circuit. Using something like...
Forum: 80. Computer Hardware & Software Fri 24 August 2007, 10:53
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, I'm always happy to give advice -...

Aubrey,

I'm always happy to give advice - just ask my kids! UT is Utah, a great place to live and an even better place to raise a family.

Good luck with your project. Building a stepper...
Forum: 80. Computer Hardware & Software Fri 24 August 2007, 06:41
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, You're basically correct about heat...

Aubrey,

You're basically correct about heat buildup in transistors. Most designers use F.E.T.s (Field Effect Transistors) when designing stepper drivers. You can find some basic information...
Forum: 80. Computer Hardware & Software Wed 25 July 2007, 08:41
Replies: 90
Views: 185,782
Posted By Richards
Aubrey, You've done a lot of work and research...

Aubrey,
You've done a lot of work and research to get an understanding of how stepper motors work. But, if your experience is like mine, you've made the first step on a thousand mile journey....
Showing results 1 to 12 of 12

 
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