The purpose of this project was to turn on 12 heart shaped LEDs that would light up when a group of people holding hands completed a circuit, because amazingly electricity can flow through our skins. (Read more: http://en.wikipedia.org/wiki/Skin_conductance)
The setup was a simple circuit that was completed using a transistor that amplified the signal.
Setup for the LEDs, the R1s are 22 Ohm resistors while R2 is a 68 ohm resistor
Soldering the LEDs on the back of a cardboard as shown in the configuration above. The LEDs can be secured to the cardboard using hot glue to ensure that the ends sticking out don’t cause the circuit to short
The heart as shown from the front of the cardboard. Placed upside down it reminds me of a moth (that has been stepped on)
Final setup, the breadboard contains the transistor used for signal amplification. The base connects to the anode, while the emitter connects to ground. The collector connects to the negative side of the circuit