Okay so this experiment was about connecting a LED with a battery pack and a resistor.
It was very easy.
I tried a week ago with the wrong potentiometer, a tiny one, and it was a pain to connect and turn the knob. This time i had a nice big one and everything went smoothly!
The author of the Make: electronics book made us measure voltage across the potentiometer while we were adjusting the potentiometer and see the result in the change of voltage.
(the more resistance the more voltage it would seem.)
Also made us measure current
The more resistance the least current can go through.
V = R x I
6V = 1k x 6 Amp
6V = 2k x 3 Amp
6V = 4k x 1.5 Amp
I = V/R
R = V/I
(After reading the electronics for dummies, and the chapter on ohms law in the Make: electronics book, i'm getting pretty familiar with Ohm's law!)
Anyway it was fun to blow 2 LEDS, and my wife seemed to enjoy the experiment as well.
I must say that the flexible alligator grip wires that i was using made this much easier.
If you buy the Make: electronics book, you may want to invest in 3-4 of those.
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| Dim LED |
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| Brighter LED |
Only one experiment today, hopefully when i sit down to do some of this stuff next time i will be able to get through many in one sitting.
This was a long day and i must watch the end of LOTR :)
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