Chapter 5. What Next?
At this point, we can branch out in numerous directions. Here are some possibilities:
Audio: This is a large field including hobby projects such as amplifiers and “stomp boxes,” to modify guitar sound.
Electromagnetism: This is a topic that I haven’t even mentioned yet, but it has some fascinating applications.
Radio-frequency devices: Anything that receives or transmits radio waves, from an ultra-simple AM radio onward.
Programmable microcontrollers: These are tiny computers on a single chip. You write a little program on your desktop computer, and load it into the chip. The program tells the chip to follow a sequence of procedures, such as receiving input from a sensor, waiting for a fixed period, and sending output to ...
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