This project implements a sophisticated LED mesh network with autonomous root selection, BLE connectivity, and real-time LED pattern synchronization. This guide explains how to configure the system ...

Using Bluetooth on a desktop computer is now such a seamless process; it’s something built-in and just works. Behind that ubiquity is a protocol layer called HCI, or Host Controller Interface, a set ...

The ESP32 microcontroller is an ideal choice for our IoT system due to its processing capabilities (2 cores, 32-bit registers, 160 MHz, 520KB SRAM/4MB Flash) and built-in WiFi and Bluetooth ...

Typically associated with circuitry projects and real-time operating systems, microcontrollers are great for tinkerers who prefer working with embedded devices. But unlike their SBC counterparts, you ...

Gesture control is one of the coolest ways to interact with technology—no buttons, no touchscreens, just simple hand movements. It almost feels like magic when you can control devices with a wave of ...

The cheap WLAN and Bluetooth chips from the manufacturer Espressif, ESP32, contain undocumented commands in the Bluetooth hardware communication in current firmware versions. This opens up a security ...

Recently there was a panicked scrambling after the announcement by [Tarlogic] of a ‘backdoor’ found in Espressif’s popular ESP32 MCUs. Specifically a backdoor on the Bluetooth side that would give a ...

The Bluetooth SIG's formal release of a new specification for mesh networking is big news in the Bluetooth world. While Bluetooth technology has been around for nearly two decades it has always ...

Update 3/9/25: After receiving concerns about the use of the term 'backdoor' to refer to these undocumented commands, we have updated our title and story. Our original story can be found here. The ...