Stop ignoring your TV’s RS-232 port – it’s full of advanced home theater tricks

Once you set up your TV, you likely forget about most of its ports, except for HDMI and USB. If you’re an advanced TV user, ...

How 'ESP-SDR' Works: Turning the ESP32 Wi-Fi Chip into an SDR Receiver

I came across a project on GitHub called ESP-SDR firmware, and since it seemed interesting to uncover hidden features of ...
Circuit Digest

This $32 Open-Source PCB Encoder Measures Position to 40 µm Using the Same Trick as Your Digital Calipers

Cheap digital calipers hide a clever capacitive encoder inside, and Nick Steele has turned that idea into an open-source ...
Open Source For You

Open-Source ESP32 Walkie-Talkies Send Audio Without Wi-Fi

These open-source ESP32 walkie-talkies use ESP-NOW to exchange audio recordings without a Wi-Fi router, with Arduino firmware ...