Final Project

The circuit I mentioned in my last post used a bcm14093 nan gate chip. I used this circuit to create the electronic instrument for my DIY final project. The resistance on the first oscillator is controlled by a 1 megahertz potentiometer and has a .1 uf capacitor. The second oscillator is controlled by a photo resister and has a 35 uf capacitor. The third and final oscillator is controlled by a 10 k potentiometer and a .1 uf capacitor. From the final oscillator are an audio out and then a 100k resistor and red LED. The LED lights up whenever audio is being produced. The two potentiometers are mounted on top a small black box, about the size of a tin can. The circuit is mounted on the long side of the box. The photo resistor is mounted on the left side. The 9 v battery is mounted inside of the box. The LED light is mounted on the top of the box, between the potentiometers. The instrument also has a large power switch mounted on its right side. When the switch is activated, a green LED inside of the switch lights up. The instrument can be played by altering the potentiometers as well as varying the amount of light exposed to the photo resistor. The potentiometers control the pitch of the sound and the photo resister controls the tone. The potentiometers can be controlled while leaving a finger or two free to control the photo resistor. I am very pleased with this instrument. The sounds it produces are awesome. They sound pretty good when played out of a mini amplifier and sound amazing out of a large amplifier. I have already begun recorded music with this awesome instrument.