esp32.diyhttps://esp32.diy/Learn, build and deploy smart devices with ESP32RuView: Turn Your ESP32 Into a Through-Wall WiFi Sensing Systemhttps://esp32.diy/ruview/https://esp32.diy/ruview/Sun, 11 Oct 2026 10:52:11 +0000Build a contactless room-sensing system with RuView and an ESP32-S3. Detect presence, breathing rate, heart rate, and activity through walls — no cameras needed.Marlin Firmware: Build and Flash for ESP32 3D Printershttps://esp32.diy/marlin/https://esp32.diy/marlin/Sun, 11 Oct 2026 10:50:53 +0000Step-by-step guide to building and flashing Marlin 2.1 firmware for ESP32-based 3D printers using PlatformIO and VS Code.ExpressLRS: Open Source High-Performance RC Link for ESP32https://esp32.diy/expresslrs/https://esp32.diy/expresslrs/Sun, 11 Oct 2026 10:50:51 +0000Build a low-latency, long-range radio control link with ExpressLRS on ESP32. Supports 900 MHz and 2.4 GHz, up to 1000 Hz packet rate, and dozens of protocols.arduino-esp32: Arduino Core for the ESP32 Family of SoCshttps://esp32.diy/arduino-esp32/https://esp32.diy/arduino-esp32/Sun, 11 Oct 2026 10:50:47 +0000Official Espressif Arduino core for ESP32, ESP32-S3, ESP32-C6, ESP32-P4 and more. Write Arduino sketches for any ESP32 SoC with full library support.