This tiny ESP32-S3 packs an impressive amount of hardware into 24mm. The M5Stack ATOMS3R is a tiny IoT controller built around a dual-core ESP32-S3 running at up to 240MHz, with 8MB Flash and 8MB PSRAM. It also has a 128×128 color display, BMI270 6-axis IMU, BMM150 magnetometer, programmable button and IR transmitter, plus USB-C and expansion GPIO. At just 24 × 24 × 12.9mm and 6.8g, this is small enough to disappear inside the project you are building. You can program it with Arduino, ESP-IDF, PlatformIO or UiFlow2, so it is a pretty capable little platform for embedded and IoT experiments. At $17.50, it is the kind of board you can throw into a project just to see what you can build. Tiny board. Full ESP32-S3. Lots of possibilities.

🤯 An ESP32 inside a PCIe slot might be the coolest PC mod you will see today. This open-source project turns an ESP32-H2 into a PCIe x1 card that can remotely power on, reset, and control your PC through Home Assistant. Instead of relying on Wake-on-LAN, it interfaces directly with the motherboard's Power and Reset pins while drawing power from the PCIe 3.3V auxiliary rail, allowing it to stay active even when the PC is turned off. What You'll Learn - ESP32-H2 firmware - Zigbee networking - Home Assistant integration - PCIe hardware design - PCB design - MOSFET switching - Motherboard front-panel interfaces - Embedded power management - Hardware bring-up - Embedded debugging What makes it clever is its simplicity. It doesn't modify your motherboard or replace your power button but it simply works alongside the existing hardware while adding smart remote control. Projects like this are a great reminder that embedded engineering isn't always about building new devices, sometimes it's about making existing ones smarter. github.com/scavenrage/PCIe-P…