What’s the cheapest quadcopter you can build? As [Circuit Digest] demonstrates with their variant of the ESP-Drone project by Espressif, you only need a minimum of parts: an ESP32 MCU, an inertial ...

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network-enabled ...

The ESP32 has emerged as a favorite tinkering device in the maker and hobbyist world thanks to its low cost, built-in Wi-Fi and Bluetooth, and strong community support. One particular strength it has ...

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 ...

Have you ever imagined building a drone so small it could rest comfortably in the palm of your hand, yet powerful enough to soar through the air with precision, all controlled from your smartphone?