What do you get when you combine a direct digital synthesis (DDS) chip, a power detector, and an Arduino? [Brett Killion] did make that combination and wound up with a practical network analyzer.

What if you could get an instant SMS alert the moment a fire or smoke is detected at home or office? Through this project ...

While a Pi can be used for more complex tasks (such as designing a whole-network ad blocker or an emulator for classic games) ...

Instead, he drew up a simple schematic that used an Arduino Nano, an FM radio module based on the TEA5767, and an audio amplifier based on the LM386. A single button on the Arduino helps cycle ...