Learn electronics with play-dough!

[mikeselectricstuff]

http://www.ted.com/talks/annmarie_thomas_squishy_circuits.html

[Zad]

Posted before: https://www.eevblog.com/forum/index.php?topic=3025.0

[Zero999]

I didn't know it was that conductive and was surprised there was enough current to power a small motor.

I assume she used LEDs with a built-in series resistor.

I wonder if there are any problems with electrolysis causing corrosion, chlorine gas emissions and the dough turning caustic after awhile? If that's a problem AC could be used (from a sealed transformer of course) or the recipe could be changed so it's chlorine free, it needs to be non-toxic of course, maybe use sugar dough with graphite powder.

[Zad]

Seems to me that it would be infinitely easier to use wires. She keeps talking about small hands, well from what I remember as a kid, it was easier then for me to manipulate components and wires than it is now! It seems to be one of those YouTube "hey cool, but so what?" kinda things.

[Sionyn]

really anything can conduct electricity with enough emf  just lies in its distance between the valance and conduction band so ok maybe not everything oh and electrical break down is not really conductance.


here something for kicks (not the only thing he can't do, de-interlace his video either)
MIT Physics Demo -- Conducting Glass

[Zero999]

It's just melting the glass allowed the ions to move. The same thing will happen if you freeze salt water, it will stop conducting as the ions can't move and start conducting again when it melts.

It must be an alkali glass (aprox. 5% Na2O) that when you melt it, the sodium ions move through the almost liquid material.?

[Ferroto]

bah when I was 12 my old man showed me the correct soldering technique. No need for play-dough

[Simon]

whatever next !