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About Russ Kinner
Expertise
Industrial Automation, computer controls for processes, Programmable Logic Controllers (PLC) and Human Machine Interface (HMI) - design and architecture

Experience
Professional Engineer Registered in Ohio and Arizona, I've been working in the Industrial Automation field for 30 years.

Organizations
IEEE

Publications
International Programmable Controller Conference 1991
Article in Motion Control Magazine 1998

Education/Credentials
BSEE, University of Toledo

Also have been a radio amateur for 35 years.

You are here: Experts > Computing/Technology > Job Searching: Technical > Electrical Engineering > Do-it-yourself engineering

Electrical Engineering - Do-it-yourself engineering

Expert: Russ Kinner - 8/12/2005

Question
How would I put together my own little sound-activated car for 9th grade science project? Where would I be able to find the materials to do so?

Answer
Here are 2 links to sound activated cards that can be interfaced to a small relay. You could use the relay contacts to start and stop a car. Steering would be more difficult but you might be able to fliter the audio input to pass low and high tones to turn left and right.

http://electronickits.com/kit/complete/elec/ck1607.htm

http://www.uoguelph.ca/~antoon/circ/relay4.html

I really don't know much about these circuits but both look to be easy to assemble (the kit version would probably be better for you as long as you can use a soldering iron).

Making a PC board is a chore so if you wanted to build from scratch I would suggest getting a prototyping board that Radio Shack sells (Catalog #: 276-175) and use it to wire the circuits for a test.

Good Luck

Russ

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