The ESP32 has always been the go-to board for DIY smart home gadgets, but most of them talk to a single hub over Wi-Fi ...

There are some projects that seem at first sight to be easy, but anyone who tries them finds a whole heap of unexpected problems and turns to the off-the-shelf device. PCB antennas for example, or ...

In the previous chapter, we stored the current state in a variable and switched the LED operation mode every time the button was pressed.The signals sent to the LED so far have been of two types: HIGH ...

In the previous chapter, we learned about "arrays," which allow us to handle multiple values as a single group. As programs get longer, the same processes appear repeatedly, and it becomes difficult ...