Search found 2123 matches

by jwax
Thu Apr 08, 2004 3:20 pm
Forum: General Discussion
Topic: teddy ruxpin
Replies: 6
Views: 1687

Re: teddy ruxpin

Teddy sounds like he ran much like Robie the Robot, popular in the late '80's. Robie actually moved around, moved his arms, and talked. You could teach it to move through a certain path, speak at different times, all based on the audio cassette in his chest. You could change the cassette to have him...
by jwax
Wed Apr 07, 2004 4:56 am
Forum: General Discussion
Topic: DVD to VHS
Replies: 5
Views: 1345

Re: DVD to VHS

While on the subject, how does one take standard NTSC video from a VCR or video camera, and make it into a digital image, like a .jpg?
"Special" video card required?
by jwax
Tue Apr 06, 2004 3:42 pm
Forum: General Discussion
Topic: microphone question
Replies: 6
Views: 1403

Re: microphone question

Sorry to hear of your "situation"!
http://spyoutlet.com/products/index.cgi?code=3&cat=2
These are professional jobbies, $50-$80, but would certainly do the job.
Any old electret mike and a pre-amp would work, but they pick up so much that it covers up the sound you're trying to hear.
by jwax
Tue Apr 06, 2004 4:56 am
Forum: General Discussion
Topic: Transmitter Power in dBm
Replies: 9
Views: 2057

Re: Transmitter Power in dBm

Just curious, Externet, where did that formula come from? What range of frequencies does it apply to?
John
by jwax
Sun Apr 04, 2004 6:04 pm
Forum: General Discussion
Topic: Audio Frequency Counter Recommendation
Replies: 14
Views: 3379

Re: Audio Frequency Counter Recommendation

http://www.qsl.net/zl1bpu/micro/CNTR/CNTR.htm
At a glance, should make for an interesting project for under $50.
Found this under a Google search under "audio frequency counters".
John
by jwax
Mon Mar 29, 2004 4:47 am
Forum: General Discussion
Topic: ultrasonic motion detector
Replies: 5
Views: 1085

Re: ultrasonic motion detector

I'm all for ultrasonics applications, but if it's motion detection you want, infra-red detectors are cheap, directional, and available in all types of ranges.
by jwax
Fri Mar 26, 2004 3:30 pm
Forum: Computer Programming
Topic: ACAD to G&M Codes
Replies: 2
Views: 1842

Re: ACAD to G&M Codes

Thank you, Caesar! Appreciate your reply!
Found someone with MasterCAD knowledge!
Fascinating what 3D modeling can do!
John
by jwax
Thu Mar 25, 2004 4:07 pm
Forum: General Discussion
Topic: Air horn
Replies: 7
Views: 1476

Re: Air horn

by jwax
Wed Mar 24, 2004 4:05 pm
Forum: General Discussion
Topic: Varying AC frequency
Replies: 11
Views: 2897

Re: Varying AC frequency

Not to discourage Sunil, but that's 10 octaves of frequency range! AND at 50 amps! Hope you have deep pockets for this project.
Could we ask what it is for, in case theres an alternative possibility to achieve your goal?
by jwax
Mon Mar 22, 2004 10:36 am
Forum: General Discussion
Topic: Cleaning circuit boards
Replies: 11
Views: 2169

Re: Cleaning circuit boards

If you had access to an ultrasonic cleaner, submerge the board in isopropyl alcohol and shake away. Repeat with clean alcohol, dry.
by jwax
Thu Mar 18, 2004 3:38 pm
Forum: General Discussion
Topic: Resistive spark plugs...
Replies: 5
Views: 1172

Re: Resistive spark plugs...

My 2 cents- The ozone disassociates chlorine from the thermoset plastic distributor cap. It's a chloride dusting.
Anybody got a lab?
John
by jwax
Wed Mar 17, 2004 3:34 pm
Forum: General Discussion
Topic: Half wave rectified mains...
Replies: 6
Views: 1363

Re: Half wave rectified mains...

One question, Miguel- Why?
Is this a technical feat or a frugal one?
John
by jwax
Mon Mar 15, 2004 3:03 pm
Forum: Computer Programming
Topic: ACAD to G&M Codes
Replies: 2
Views: 1842

ACAD to G&M Codes

My CNC machine uses "G & M" Codes to direct its' cutting tool in x,y, and z axis. If I draw a figure in AutoCad, any ideas on how I can convert those files to tool path motions? The ACAD files have all the point-to-point xyz coordinates, but the CNC machine wants ASCII commands to tell it where to g...
by jwax
Thu Mar 11, 2004 5:28 pm
Forum: General Discussion
Topic: spark plug voltage
Replies: 5
Views: 1328

Re: spark plug voltage

Don't! Sure fire way to fry your multimeter! Without serious monitoring equipment, you won't measure anything significant. Remove the plug from the head, ground its' threads, and yank away. Bright blue spark at gap says all is well. Wanna get fancy? Build a spark gap- two nails pointed at each other...
by jwax
Wed Mar 10, 2004 3:47 pm
Forum: Computer Programming
Topic: data logger for a temperature sensor
Replies: 2
Views: 1873

Re: data logger for a temperature sensor

GW- Try:
http://www.omega.com/newsearchengine/es ... mit=Search<p>Omega has loads of temp sensors/loggers/accessories.
Have a blast!!
John