Search found 35 matches

by samsmiles
Sun Feb 01, 2004 12:17 pm
Forum: General Discussion
Topic: looking for brain signal mearsurement circuit
Replies: 2
Views: 761

Re: looking for brain signal mearsurement circuit

Hello Dave,
I was toying with this one
http://openeeg.sourceforge.net/doc/index.html<p>it works and its great!
Check it out.
It is based on atmels at90S4433P
AVRs are mics I play with so I had no problems with software dev. etc.
Good luck!
Sam
Ps Im sure there are folks working on PICs
by samsmiles
Tue Dec 30, 2003 9:28 pm
Forum: General Discussion
Topic: Choosing a good starter microcontroller
Replies: 6
Views: 1102

Re: Choosing a good starter microcontroller

Im avr atmel fan big time. Its cheap and easy to use. I made my own programmer etc. All on low student budget. There is lots of great web pages with avr atmel related data, projects etc and some good books. Freeware software is also available for development. AVR is very popular in academic env. <p>...
by samsmiles
Tue Dec 30, 2003 9:19 pm
Forum: General Discussion
Topic: Circuit Common?
Replies: 10
Views: 1718

Re: Circuit Common?

Hi Zeek, Circuit common can be ground in terms of ground ground (such as the one on some prof. power supplies; battiers are not conncted to it and neither are wall warts).<p>Circuit common is just like a level in appartment building which you call common or start counting ground it can be something ...
by samsmiles
Thu Dec 25, 2003 4:05 am
Forum: General Discussion
Topic: Merry Xmas
Replies: 4
Views: 951

Merry Xmas

Merry Christmas to all Nuts&Volts friends!<p>Sam
by samsmiles
Mon Dec 22, 2003 5:38 pm
Forum: General Discussion
Topic: TV as an Oscilloscope
Replies: 13
Views: 2576

Re: TV as an Oscilloscope

Michael did you check links I gave you? Bruces article in circuit cellar gives you exact schematic how to build it. Paper costs $ 1.15. check it out. Schem. is free for download. good luck with it its simple to build. Sam PS but as said before it doesn't do 100 MHz<p>[ December 22, 2003: Message edi...
by samsmiles
Sat Dec 20, 2003 5:51 pm
Forum: General Discussion
Topic: TAB books
Replies: 9
Views: 1622

Re: TAB books

Hello Greybie,
I got the TAB electronics guide to understanding electricity and electronics by G. Randy Slone short time ago and on page 234 it talks about thermal runaway and implications of it on bipolar transistor amplifiers.
Take care. Sam
by samsmiles
Fri Dec 19, 2003 5:31 pm
Forum: General Discussion
Topic: TV as an Oscilloscope
Replies: 13
Views: 2576

Re: TV as an Oscilloscope

yeah K7 maximum sample rate is 15.75 kHz which is the NTSC video line rate! Good point. Not sure about the project now as well :-( Sorry Michael
Sam
by samsmiles
Fri Dec 19, 2003 2:41 pm
Forum: General Discussion
Topic: TV as an Oscilloscope
Replies: 13
Views: 2576

Re: TV as an Oscilloscope

Hi Michael, check this out: http://www.dansworkshop.com/Homebuilt%20oscilloscope.shtml <p>Also check December 2003 issue of circuit cellar http://www.dtweed.com/circuitcellar/xlandbru.htm#2832 And Bruce Lands web at cornell: http://instruct1.cit.cornell.edu/courses/ee476/labs/s2004/lab4.html Good lu...
by samsmiles
Sun Aug 10, 2003 6:54 am
Forum: General Discussion
Topic: Any hints on how to buld pedometer?
Replies: 13
Views: 2258

Re: Any hints on how to buld pedometer?

Thanks a bunch everyone!!! Dan I checked the ftp files for from nuts and volts. Awesome! I missed february issues but I got it from friend now :-). The merucury part seems very tricky ie the switch! Im not sure how stable it is with different people, different spet lengths, esp if you are walking up...
by samsmiles
Thu Jul 31, 2003 1:01 pm
Forum: General Discussion
Topic: Any hints on how to buld pedometer?
Replies: 13
Views: 2258

Any hints on how to buld pedometer?

Hello everyone,
does anyone around here have any exp. in building pedometer or any hints.<p>Many thanks.
Sam
by samsmiles
Thu Jul 31, 2003 12:59 pm
Forum: General Discussion
Topic: Does 1μK63 label mean component is capacitor?
Replies: 2
Views: 1124

Re: Does 1μK63 label mean component is capacitor?

thanks Russ indeed it was cap. I did just what you said. I wanted to measure it in my multimiter cap measuring holes but legs were too short so I used your tip.
Take care, Sam
by samsmiles
Fri Jul 25, 2003 8:19 am
Forum: General Discussion
Topic: Does 1μK63 label mean component is capacitor?
Replies: 2
Views: 1124

Does 1μK63 label mean component is capacitor?

Sorry again for bothering. I got components with this label, two legs, blue color its box or qaud shaped not round as usual and legs are both down not axial. Im not sure if those are capacitors of value 1μF with K=10% tolerance and voltage 63 or some other element.<p>Sorry for dumb newbie question. ...
by samsmiles
Thu Jul 24, 2003 2:00 am
Forum: General Discussion
Topic: what is 1uK63?
Replies: 0
Views: 656

what is 1uK63?

Hi everyone,
I got five blue, quad. shaped elements with
1uK63 on one side and 1PN or 1R2 on the other side.<p>What are those? Box shaped capacitors? of 1 micro F, 63 V tolerance 10% is my guess but Im not sure.<p>Thanks!<p>S
by samsmiles
Mon Jul 14, 2003 10:25 am
Forum: General Discussion
Topic: Which Micro Controller to Choose?
Replies: 9
Views: 2176

Re: Which Micro Controller to Choose?

I am at learning stage with mics and I am using Atmel AVRs. I love them. Including all available formus at avrfreaks, Like the book I got by Gadre, I have free dev. systems two one in C and one in Basic (bascom Basic for AVR) they work great inspite the limits. Atmel is well spread in academia. That...
by samsmiles
Mon Jul 14, 2003 10:00 am
Forum: General Discussion
Topic: most useful books
Replies: 14
Views: 2499

Re: most useful books

I like Practical Electronics for Inventors by Paul Scherz and Robot Builder's Bonanza by Gordon McComb. <p>For Math I find Kreyszigs Advanced Engineering Mathematics great.<p>And yes Art of electronics is over my level in Electronics but I might get there some day :-) I just bought it few weeks ago....