Search found 11 matches

by imurillo723
Sat Jun 16, 2012 1:51 pm
Forum: Computer Programming
Topic: Programming the 80C49 microcontroller
Replies: 3
Views: 2097

Programming the 80C49 microcontroller

Does anyone know how to program an 80C49 microcontroller? Can someone please provide me with a link to an article that shows how to do this? I have an electronic sign that I would like to use, and it uses an 80C49 controller. I would just like to dump it's memory so I can find out how the serial inp...
by imurillo723
Sun Apr 22, 2012 8:35 pm
Forum: Computer Programming
Topic: Arduino and Basic programming
Replies: 9
Views: 5369

Re: Arduino and Basic programming

I have done projects in both PIC and Arduino. I find the Arduino is a very nice system to use if you know very well your program flow and want to check out a quick setup with hardware. The PIC is very nice also as you can use the MPLAB to simulate your program and get the bugs out of it before actua...
by imurillo723
Sat Apr 21, 2012 10:50 am
Forum: Computer Programming
Topic: HP1650a Logic Analyzer Floppy Modification
Replies: 0
Views: 1464

HP1650a Logic Analyzer Floppy Modification

Has anyone ever worked on a HP1650 analyzer before? I have one that I purchased a few years ago. Although I have no problems with it now, I foresee that one day the floppy drive will go the way of the dodo bird. :sad: I found this on the web. Has anyone ever tried to replace an old floppy drive with...
by imurillo723
Sat Apr 21, 2012 10:31 am
Forum: General Discussion
Topic: AC Motor Drive
Replies: 25
Views: 6533

Re: AC Motor Drive

Lenp, I work for the U.S. Postal Service and we usually use speed controls on our powered roller conveyors. There was only one case where we had to do what you were attempting and we did it by mounting the single phase drive roller under the rest of the idler rollers in the conveyor section. The ori...
by imurillo723
Sun Jan 31, 2010 5:28 pm
Forum: General Discussion
Topic: Kasparov Blade Chess Game problem
Replies: 8
Views: 2512

Re: Kasparov Blade Chess Game problem

Thanks Mr. Al. Actually, my 7 year old grandson has Chessmaster 10 loaded on his laptop and loves to play it all the time. :grin: I just like to fiddle with repairing things and this game seemed like just the thing to keep me occupied these days. Thanks for the support and ideas. I'll get right on t...
by imurillo723
Sat Jan 30, 2010 10:37 pm
Forum: General Discussion
Topic: Hello to all....
Replies: 12
Views: 2287

Re: Hello to all....

Don't want to take up too much of your "Hello to all..." posting. :grin: Anyway, yes it works that way in the good ole USPS too. If you are late or call in for a day during your first 90 days, you are out!! :sad: Yes, the machines are fast, and they gobble up mail if it has pens or coins in them. Bu...
by imurillo723
Sat Jan 30, 2010 10:24 pm
Forum: General Discussion
Topic: Kasparov Blade Chess Game problem
Replies: 8
Views: 2512

Re: Kasparov Blade Chess Game problem

I get the picture. I can then test to see what works. After I eliminate that, whatever is left has to be the bad switch. The problem still remains: How do I fix this? The switch board is a membrane keyboard. I am afraid of taking it off without damaging it. My oldest son had an idea: How about using...
by imurillo723
Sat Jan 30, 2010 10:44 am
Forum: General Discussion
Topic: Kasparov Blade Chess Game problem
Replies: 8
Views: 2512

Re: Kasparov Blade Chess Game problem

This game has 8 LEDs on the side of the vertical and 8 LEDs along the bottom for the horizontal of the board matrix. This way, it only lights 1 horizontal and 1 vertical LED to tell you which piece is moving. After you press that switch, it will then light the next combination to let you know where ...
by imurillo723
Sat Jan 30, 2010 10:33 am
Forum: Robotics
Topic: Useful and educational project
Replies: 1
Views: 2664

Re: Useful and educational project

Sounds like the beginnings of a robot hand design.....interesting. I think you will need a microcontroller to run your project. My experience is with the PIC series. There are many others out there. It depends on how much control you want to build into the project. Question is: Will the servo have e...
by imurillo723
Sat Jan 30, 2010 9:53 am
Forum: General Discussion
Topic: Hello to all....
Replies: 12
Views: 2287

Re: Hello to all....

Hi all, I think I introduced myself already, but if not..... My name is Isidro, but everyone calls me Sid. I am a USPS Maintenance Postal Supervisor from the Chicago area. I have worked in electronics for more than 20 years as Electronic technician, Engineering Technician, Engineer, Bench Tech, Game...
by imurillo723
Fri Jan 29, 2010 12:10 am
Forum: General Discussion
Topic: Kasparov Blade Chess Game problem
Replies: 8
Views: 2512

Kasparov Blade Chess Game problem

Hi all, I am new to this forum. I hope that I can be of help to anyone out there, as I am sure I can count on all of your help as well. Well anyways, here is my problem: I have a problem with an old Kasparov Blade Chess game. When the game is turned on, the game will not play, but it will say "White...