Part 2) Experiment
2a) Photocell in an inverting amplifier
(Sorry! My phone decided that it wanted to put the video sideways.)
2a) Photocell in an inverting amplifier
(Sorry! My phone decided that it wanted to put the video sideways.)
2b) Photocell in an oscillator
Part 3) Final Project
My final project is going to be a synthesizer similar to an instrument called hurdy gurdy. It won't have a cranking wheel and strings, but it will have droning tones and keys/buttons to play melodies. It's going to have square wave and triangle wave oscillator, and a knob that mixes those two oscillators. There will be a tremolo and a vibrato, each with an on/off switch, "speed" knob, and perhaps a "range" knob. Tremolo and vibrato will be made using an LED and a photocell, and the "speed" knob will control how fast the LED blinks by controlling the frequency, and the "range" knob will control how bright the LED lights up by controlling the amplitude. It will have a fader for volume, and an output audio jack, and no input.
Parts I have
Parts I need
- resistors
- capacitors
- photocells
- LEDs
- dual ganged potentiometer
- standard potentiometer
- switch
- op amps
- 1/8" jack
Parts I need
- some kind of casing
- slide potentiometer
- more standard potentiometer (maybe)
- buttons (maybe arcade buttons)
- 1/4" jack (maybe)