It’s a surprisingly complex circuit with a lot of filter components and a mild mystery surrounding the use of a GPIO to pulse the receive side of its detector through a capacitor. One thing led ...

The system allows users to wirelessly control multiple AC appliances like lights and fans through an interactive web ...

Raspberry Pi fans have long wished for a power button. The Raspberry Pi 5 delivers. But what if you have an older model?

One possible way to do so is suggested by [Doctor Volt] in a video where a Samsung Galaxy S4 is combined with a USB-connected FT232R board to add external GPIO. The idea is pretty simple ...

A youtuber has developed a lighting system for staircases using the ESP32 module, the RD D03E mmWave radar sensor, and the WS2812 RGB LED strip. The system dynamically illuminates stairs based on a ...

The GPIO cell set can be configured as input or output and has an internal 50Kohm pull-up or pull-down resistor. Cells for I/O and core power and ground with built-in ESD circuitry are included. A ...