sensor based traffic light system - Page 3 - Electronic Circuits Projects Diagrams Free

Hank Fletcher · 25th July 2007, 03:02 AM

Quote:

Originally Posted by jikes64

I definitely dont have a very privileged education/ tutorin like u guys

Wait a second, didn't you say this was a final year project for CORNELL?! That's a privileged education I'd never be able to afford. Then again, I seem to remember doing a cross-walk project for a final year assignment in high school, albeit not a four-way.

blueroomelectronics · 25th July 2007, 05:18 AM

Copied from another forum site, good advice though.

Quote:

Dan Sheingold of Analog Devices wrote:
1. Hardware design, even of digital circuits, is inherently analog design, albeit not always with the textbook building blocks, but always with the challenges.
2. Good analog engineers generally are self-selected as a pool of guys/gals who like to tinker with hardware.
3. My understanding of the conventional engineering college curriculum is that it has become more and more rarified in the direction of theory and software, not very attractive to these types.
4. High-school science fair participants tend to be hands-on types.
So---What if a university boldly and baldly offers a 3rd & 4th-year curriculum in the fun and headaches of designing and building electronic hardware, built around challenging hands-on projects? And advertises it as such to prospective students? The curriculum would include basic analog (including digital) circuit design, properties of components, lab instrumentation (bought and homemade), sources of degradation, distortion and interference in electronic circuits, plus lab
courses and a design project in each semester. And do bring in industry design and application engineers for an occasional guest lecture.

Stuart Smith of Elantec Semiconductor wrote:
I think no electronics students should be allowed to graduate until they can show that they can successfully find faults in circuits. This should be a required, practical (Lab) class, with no chance of graduating until the students get an “A”! No simulator tells you exactly where the problem is, no automated tester tells the test engineer what the problem was. Only a breadboard sometimes gives you help by means of smoke signals from the incorrectly hooked up or broken device!
Like fault finding, error analysis is another forgotten science. It used to be done a lot when simulators could not be used to check for every permutation of process variations, supply voltage, temperature, component tolerances, etc

seveprim · 25th July 2007, 09:24 AM

jikes64

Ok it looks like u have the basic hardware under control in that mess so you now need to start of your software design ... for a noob why don't you go with good old flow chart, it is a start and road map of what you want to do. We cant design this project for you because you will not learn if it is done for you.

blueroomelectronics · 25th July 2007, 01:19 PM

I was not under the impression that was his hardware but a link to a similar project at Cornell.

seveprim · 25th July 2007, 01:25 PM

Quote:

Originally Posted by blueroomelectronics

I was not under the impression that was his hardware but a link to a similar project at Cornell.

Well I was hoping he would copy it. lol and either way ya look at it he needs some sort of flow chart to understand what is involved in the software.

blueroomelectronics · 25th July 2007, 02:05 PM

There's not enough info on the site to copy it. Hall effects sensor, little wooden cars with magnets, model traffic lights.

seveprim · 25th July 2007, 02:18 PM

Quote:

Originally Posted by blueroomelectronics

There's not enough info on the site to copy it. Hall effects sensor, little wooden cars with magnets, model traffic lights.

well enough info for anyone who really wants to do the task!

Hank Fletcher · 25th July 2007, 02:18 PM

Quote:

Originally Posted by blueroomelectronics

I was not under the impression that was his hardware but a link to a similar project at Cornell.

I hadn't interpreted it like that at first, but I see now that you must be right. I can't understand why he insists on following that particular project in light of the suggestions you've provided, some of which might have much more explicit information and no doubt more practical for the equipment he has available to him. What's the criteria for this project? Using an mcu to impress his profs (all power to him, I know how hard it is to make a case in a new area with diehards), and getting it done in a two-month time frame? If that's all I think he should have a little more faith that he can get it done, and just surf till he can find someone who can ship whatever parts he needs to him.

All sympathies if his personal economic situation or, for instance, shipping to where he's at is not practical, but those are the things you need to know if you're going to help him. We need to know what he's got, and moreover, what he can get - any suggestions beyond that are impractical.

blueroomelectronics · 25th July 2007, 03:13 PM

I wish him an anyone else working on a project the best of luck, but hitting the books (or internet search) will provide a wealth of information (and misinformation). The forums are fantastic for opinions and insight but rarely will someone do an entire project for you gratis.

And if it's a traffic light simulation why not just do a simualtion on a PC first, you'll get an idea on the algorithms required to turn it in to a hardware project.
http://www.cs.washington.edu/homes/d.../working_amb2/

I have no idea of his hardware or software skills, and what appears to be a straight forward project (how many people wonder what goes into their traffic lights)
Now this traffic light video is interesting, wonder if it's true.
Is there a secret code to control traffic lights?

http://www.wisebread.com/is-there-a-...traffic-lights

jikes64 · 28th July 2007, 08:52 AM

Thanks for al your replies.
I will post all I have ASAP so you advise me on the best route to take.
I had everything dumped on my laptop but i think the hard disk has crashed cos this last few days it hasnt been comin on and wen it does it gives a HDD error! Ive ordered another and am disposing of the previous one.
Luckily, I had a hard copy backup so I'll just use the links to get them back and I'll post all I can retrieve but most of it is gonna be using the 555 timer and counters.
I still do appreciate. At least Im learnin something from you guys already.

Cheers

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25th July 2007, 09:24 AM	(permalink)
seveprim	jikes64 Ok it looks like u have the basic hardware under control in that mess so you now need to start of your software design ... for a noob why don't you go with good old flow chart, it is a start and road map of what you want to do. We cant design this project for you because you will not learn if it is done for you.

25th July 2007, 01:19 PM	(permalink)
blueroomelectronics	I was not under the impression that was his hardware but a link to a similar project at Cornell. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

25th July 2007, 02:05 PM	(permalink)
blueroomelectronics	There's not enough info on the site to copy it. Hall effects sensor, little wooden cars with magnets, model traffic lights. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

25th July 2007, 03:13 PM	(permalink)
blueroomelectronics	I wish him an anyone else working on a project the best of luck, but hitting the books (or internet search) will provide a wealth of information (and misinformation). The forums are fantastic for opinions and insight but rarely will someone do an entire project for you gratis. And if it's a traffic light simulation why not just do a simualtion on a PC first, you'll get an idea on the algorithms required to turn it in to a hardware project. http://www.cs.washington.edu/homes/d.../working_amb2/ I have no idea of his hardware or software skills, and what appears to be a straight forward project (how many people wonder what goes into their traffic lights) Now this traffic light video is interesting, wonder if it's true. Is there a secret code to control traffic lights? http://www.wisebread.com/is-there-a-...traffic-lights __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

28th July 2007, 08:52 AM	(permalink)
jikes64	Schematics Thanks for al your replies. I will post all I have ASAP so you advise me on the best route to take. I had everything dumped on my laptop but i think the hard disk has crashed cos this last few days it hasnt been comin on and wen it does it gives a HDD error! Ive ordered another and am disposing of the previous one. Luckily, I had a hard copy backup so I'll just use the links to get them back and I'll post all I can retrieve but most of it is gonna be using the 555 timer and counters. I still do appreciate. At least Im learnin something from you guys already. Cheers