The easiest and cheapest way to make an oscillator is using the famous 555 timer chip, which in Indonesia it cost roughly about Rp. 800,-. It’s a simple oscillator which produced a square wave signals. You can also call it as “Poor man’s oscillator” :P. Even as simple as it is, or as cheap as it is, this oscillator is still a powerful instrument. I build this oscillator based on “Laser Ray” Schematic from “50 555 Circuits” E-book by Collin Mitchel. I also made the EagleCAD schematic and board file bellow.
Part List
First thing first, you’ll need:
- NE555 IC-Intergrated Circuit (duh)
- 5K Potentiometer
- 250K Potentiometer
- 480 ohm resistor (1/4 or 1/2 Watt)
- 0.1 uF capacitor
- 2 pcs 10uF capacitor
- 1 LED (any color)
- 1 on/off switch
- 9V Battery clip
Schematic
PCB layout
PCB print (inverted)
Download EagleCAD schematic file here: [>>link<<]
Download EagleCAD board file here: [>>link<<]
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