The KY-038 sound sensor pinout has 4 pins: VCC, GND, Digital Out, and Analog Out. We can either use the AO pin as an output for ...

500, if you are also watching Serial Monitor (inital adjustment), or, Serial Plotter (the latter is prefererd for observation).

If you are an electronics engineer or a beginner and want to build an obstacle avoidance robot, you need to first learn how an ...

[](https://youtu.be/CbovaHqvdsM) [YouTube video](https://youtu.be ...