You know how when you’re working on a project, other side quests pop up left and right? You can choose to handle them briefly and summarily, or you can dive into them as projects in their own right.

I wanted to build a high-quality internet radio that could connect to both my local Ethernet network and a WiFi access point. This setup allows me to record radio broadcasts—especially France ...

New research shows how the signal from a household WiFi device can be used to monitor heart rate with state-of-the-art ...

S/PDIF has been around for a long time; it’s still a really great way to send streams of digital audio from device A to ...

Arduino has introduced a Nano shaped board with a Wi-Fi and Bluetooth LE capable Espressif’s ESP32-S3 microcontroller, supporting it with the Arduino IDE and MicroPython. “Beginners can explore in an ...

The Waveshare ESP32-P4-Nano is a tiny, inexpensive, low-power development board powered by a dual-core RISC-V processor. Available now from Waveshare or AliExpress for around $19 and up, the little ...

A hot potato: The ESP32 chip, found in over a billion devices worldwide, contains undocumented vendor-specific commands that could potentially be misused to access device memory and manipulate ...

Open-hardware platforms enable rapid prototyping and faster time-to-market of new IoT applications. The objective of this post is to give a brief introduction to another open-hardware IoT playground — ...

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 ...