Need beginner electronic project ideas.?


Hey everyone, I'm going to be teaching a beginners electronics class in a month or so, and I need a couple basic electronics project ideas for the students. Age range will be from 11 & up if that helps with ideas.

Thanks in advance!!!

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jomac_uk7 years ago
One of the best that kids love, is a very basic AM radio using the ZN414 IC that has 3 leads and looks like a transistor, costs less then $5 to build and uses less then 5 parts, it drives an earpiece.

http://en.wikipedia.org/wiki/ZN414

Then maybe part 2 could be a separate project could be a matching LM386 audio amplifier. Again,cheap to make, the amp could be adapted for many other projects, such as an intercom etc

http://en.wikipedia.org/wiki/Lm386
I built that lm386 audio amp from MAKE: it runs nice, but the bass is way to loud!
If you refer to the Texas Instruments datasheet mentioned above..

http://www.ti.com/lit/ds/symlink/lm386.pdf

Notice the 250 uF capacitor in series with the loudspeaker? Reduce that in value to say 100uF this will reduce the 'coupling' between the LM386 and the speaker and thus reduce the bass response.
BrunoG6 years ago
coo!! I am 12 but I live in argentina I know bacics electronics like Arduino, ICs, Soldering, etc. And in argentina it is very difficult to find electronics clases.
Too bad I dont live in USA.
:(

acidbass7 years ago
daisy chains!!!!!! (multi LEDs to form a light around a piece of cardboard or something) or teach them to take apart things first and then have them put hem together again
thats what we did in communications school
Zem (author)  acidbass7 years ago
Cool!
acidbass Zem7 years ago
yeah it was great and since I took something apart already it was fruitful to see it work as good or better than it had before
When I was about that age (maybe a little earlier) I loved playing with magnetic switches, building quite complex things, actually (at least there was a lot of LEDs and switches and everything turned on and off). It was the way I learned about schematic diagrams and how different layouts mean the same thing.
1) It can help you teach them some simple logics and Boolean algebra
2) If you wind a lot of wire over several magnetic switches you get a relay, a way to make even more complex constructions and a lesson on electromagnetism.
3) Showing how a transistor or a 'proper' relay works as a switch is a logical next step
4) Using lots of buzzers and motors makes it even more fun...
Zem (author)  gruffalo child7 years ago
Awesome! Thanks for your input =)
framistan7 years ago
You should include several basics. Draw simple schematic diagrams on the board and show how each symbol is a "shorthand" way to not require a detailed picture of each component. Simple circuits are fun and easy for beginners... such as a flashlight circuit with switch and battery and bulb. Then a buzzer or small motor can be placed as a LOAD instead of the bulb. Move on to an LED light emitting diode.... which requires a RESISTOR to limit the amperage, or the LED will burn out. All of this will introduce them to many new words and terminoligy. Simple Ohms law equation brings a LITTLE bit of math into the work... but not much math because you dont want to destroy the fun. The RESISTOR color code should be used to DECODE the "secret" values written on resistors using COLORS for coding the resistors resistance.
I remember the great feeling of accomplishment when I was very young when i figured out how to "decode" the values of resistors. Placing several loads in series... or in parallel could be done. Voltmeters could be used to introduce measuring VOLTS or OHMS. That would be a good START.
Zem (author)  framistan7 years ago
Thanks for all your input! I'll definitely do those =)