ESP32, manufactured by a Chinese company called Espressif, is a microcontroller that enables Bluetooth and Wi-Fi connections in numerous smart devices, including smartphones, laptops, smart locks ...

A PCB ruler is a common promotional item, or design exercise. Usually they have some sample outlines and holes as an aid to PCB design, but sometimes they also incorporate some circuitry.

Both the ESP8266 and the ESP32 are low-cost Wi-Fi microchips with full TCP/IP stack and microcontroller capabilities produced by the Shanghai-based manufacturer Espressif Systems. See Contributing for ...

You can create a release to package software, along with release notes and links to binary files, for other people to use. Learn more about releases in our docs.