As I've experimented and played with a lot of different sensors, I've discovered that these basic devices can be built for super cheap, and they're incredibly versatile. When you're done using an ...

Just connect the CLK and DIO lines to pins GPIO 21 and GPIO 19 of the ESP32, point your web browser to its address on the local network, and you’ll be presented with a straightforward user ...

Using sixteen GPIO pins, with each connected to a HC595 shift register, and all of them connected to the same 17th and 18th GPIO pins for latch and clock, those sixteen outputs are expanded to 80 ...