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46  Using Arduino / Storage / Re: Arduino as brain for Flash Prom Programmer. (128Kx8, 17 address bits) on: November 19, 2013, 12:54:44 pm
found a better developed discussion of the same topic here -

So that would be the place to go.
47  Using Arduino / Storage / Re: Flash Memory Programmer "AM29F040B" on: November 19, 2013, 12:52:32 pm
Timing is critical when you are trying to run fast - like connected in circuit to a CPU. To read data -t is important that you properly set the address inputs before you try to set the chip selects. * WE or *OE can be set before the *OE. Timings on the chart are generally the minimums - meaning that there is a minimum time from the address line being set before the *CE and then some delay between the *CE before the *OE or *WE have to be stable. But a best practice is set the *OE or *WE at he same time the *OE is set.

To use some of the features - sector erase for instance - you do need to be able to control all address pins.

Thanks for this discussion - I missed it when I asked if anyone had any experience with these devices... I am preparing to build a Z80 CPM single board computer, and maybe even a 65C02 based board to play with.  Will be making a Flash Programmer shield to program these devices.
48  Using Arduino / Storage / Arduino as brain for Flash Prom Programmer. (128Kx8, 17 address bits) on: November 17, 2013, 07:26:57 pm
I am working on putting together the parts for a Z80 based single board computer. Small memory in DIP  type chips is now 128Kx8bit devices. For ram this is no problem, but for Flash Prom it makes it difficult because I have to use 17 address lines in programming and erasing. Nothing to exotic about it, but was wondering if anyone else had tried this.
49  Using Arduino / Motors, Mechanics, and Power / Re: Problem with getting fast speed with heavy load. on: November 15, 2013, 10:25:55 am
If you try to use a stepper motor you have to realize that as speed goes up, the torque goes down. Steppers are not a high speed device. They are designed more for low speed, highly repeatable motion. If you want speed and torque yo need to look at any of a number of SERVO (not hobby servos, industrial servos) . You will need a geearbox as most of them max out near 3000 RPM.
Automation Direct, Yaskawa and Mitsubishi have some of these servo and driver packages, though for on axis it will probably come to $1000US or more. They will have a step and direction input so they will look just like a stepper as far as programming is concerned.
Here's a page showing some options. Automation direct is of decent quality while keeping prices down. No affiliation with the company, I have used their products and have had no problems.
50  Community / Bar Sport / Re: Not quite available yet on: November 14, 2013, 04:26:36 pm
So far I have been able to use it on XP and Win7, and run the programs on Win8.  I hate the new versions of Visual Studio as it seems they went out of their way to break it and make it as slow as possible. Don't know exactly why they had to screw it up so bad when they went to .net, but VB in that environment is a totally different animal, and much slower to develop with.

Just today I was writing a couple of small programs, one on the survaillence computer at our transmitter, and one here at master control (tv station) to let the operator know when one of the cameras sees something. A total of less than 30 lines of code. Runs the program with the camera name on the command line and passes the that to a computer at the station which logs the event. Tomorrow I have to work on having it ring a bell...
51  Community / Bar Sport / Re: Distributing Wealth. on: November 14, 2013, 03:34:14 pm
Gee- I thought we already had such a thing. It's called MONEY. You work hard and earn some and some lazy bloke who sits around all day and has never bothered to develop any skills gets him slf labelled disabled so he can take your money, buy beer and sit around doing nothing and complaining about how he doesn't have any money...
52  Community / Bar Sport / Re: Why "Electrons" on: November 14, 2013, 03:23:35 pm
Because it is electrons that are doing the moving. You have a better explanation? Don't like the name "Electron" maybe?

That is like asking why we walk on 2 feet. Because they are there and it turns out to be a pretty efficient way to get around.
53  Community / Bar Sport / Re: Not quite available yet on: November 12, 2013, 05:53:14 pm
Graynomad and Pico - I have the Z80 assembler, dissassembler and emulator working under Windows. Writtten in VB6. Now working on a set for the 65C02...

What i really want is a Z80, 64K of RAM and 8K of ROM (setup so the rom can be switched off and run totally in RAM) along with a serial port (or 2)  all on one chip. Should be possible to put an entire CPM machine on a chip, with just the I/O necesary to hook op a Compact Flash for storage...

Hey, We all have our fantacies.
54  Community / Bar Sport / Re: What happens when they rebel? on: October 16, 2013, 01:08:54 pm
Think there will be anti-quadcopter missile launchers or something like that. A simple glue spray might be enough..

In town a paintball gun would probably be effective while out in the rural areas a 12ga would probably handle it...
55  Community / Bar Sport / Re: US shutdown - safe mode on: October 14, 2013, 12:05:49 pm
So, just because you exist then that places an interminable obligation on me to make sure that you, and yours are provided for? No ,matter the circumstances? And I am obligated to see things just as you see them, because by me seeing things from a different perspective than you, my perspective is automatically wrong? And if you define your needs so much more richly than I define my needs then I am then obligated to provide for you to my own harm? And I am obligated to do thios because you, and some politician feel good by taking from me and giving to others? So you feel no need to support your family because you can use the power of the state to take from me to give to yours?

And yes, I have seen those with a welfare card buy food that I could not afford. My wife worked as the night manager of a grocery store and welfare cards bought steak and shrimp and other high priced goods. Every Month. When the cards got filled there was a run on those products in the store. The real kicker is this - When my kids were born my wages didn't automatically go up. But that means an increase in the benefits for those on welfare. But I suppose that makes perfect sense. Welfare in the USA runs from $12,000 in some states to in excess of $43,000 in others.  That's pretty good wages at the top end, and a real motivation to not seek a job... But I guess I should have to support them because I am so stupid that I try to hold a job and pay my own way...
56  Community / Bar Sport / Re: How tall can we build? (and Voltage Differential of Earth) on: October 11, 2013, 11:02:18 am
Te problem is that this voltage differential is rather variable. ANd can rech quite high voltages. It is normally released in what we call lightninig. Launch a model rocket with a fine wire attached and you can cause teh lightning to hit the launch point. Problem is, that's an awful large amount of energy being released. Many years ago Popular Science had an article about static electricity motors. Problem was, getting a reliable voltage level was a challenge... Changes in weather can really screw things up...
57  Community / Bar Sport / Re: US shutdown - safe mode on: October 10, 2013, 03:38:41 pm
The bigger part of the problem, which most of the arguments try to bury in fertilzer is this, in the United States the federal Government has no business doing a lot of the things that it has taken on. Many of those responsibilities are things that are reseverved for the individual states.

While some of this may seem a bit odd to those from other countries (exceptions might be Canada, Australia and Russia), we have states that are as big as, if not bigger than some countries in the rest of the world. And I am sure that some of you all living in Europe have felt  a degree of irritation at the power the EU has over individual nations rights. We ahve heard of some of those squabbles from time to time...

This is all part of a bigger question - Just how powerful should the federal government be?  And there are a great many here in the US that feel that the power of the federal government needs to be rolled back. Some think a bit, and some think a lot... We do tend to be a more conservative lot, and there is a growing sense that the entitlements are getting a bit rich. I would like to be able to afford a fine steak, and I do get a bit pout off when some yob with a government aid card can buy the steaks that I can't afford. Why should he be able to eat well and get fat when I am working and have to eat beans?
58  Community / Bar Sport / Re: Router recommendation on: October 10, 2013, 03:24:48 pm
I really like my Dewalt 2HP router...

Sorry, wrong kind of router...
59  Community / Bar Sport / Re: How Special Relativity Makes Magnets Work on: September 27, 2013, 09:02:35 am
But how did magnets work before special relativity? That's the question I want answered...
60  Community / Bar Sport / Re: Unfriendly Geek Clique/Arduino hostility on sites like StackExchange on: September 26, 2013, 05:29:56 pm
Some people have to try to prove their superiority by trying to prove everyone is much less intelligent than they are. All the really prove is that they are slightly more intelligent than a moron...

Shield, sketch, object, method... still don't communicate much until you get the translation of what they are trying to say. Don't know why program, struct and procedure had to be renamed, other than to make it obvious who is part of the priesthood...
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