Chapter 8A Beeping, Blinking UFOUsing the 555 Timer
Now that you know how to turn on and off light-emitting diodes (LEDs) using switches and light sensors, you are ready to learn how to make an LED blink on and off all by itself. For this project, I am going to introduce a new type of electronic component called an integrated circuit (IC). An integrated circuit, commonly called a microchip, is just a tiny circuit inside a plastic case. You’ve probably seen ICs inside electronics or computers. For this project, you will use a very popular IC called a 555 timer to make a blinking and beeping UFO.
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To make this project, you are going ...
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