Ultrasonic HC-SR04 with Median Filter
Distance measurement with noise reduction.
📚 Posts
Arduino Core vs ESP-IDF: When to Switch
Pros/cons and interop tips.
BLE GATT: Read/Write a Characteristic
Create a GATT service with a RW characteristic.
BLE Notifications to a Mobile App
Notify temperature updates from ESP32 to phone.
Build Flags & Reduce Firmware Size
Optimize binary size and features.
Connect to Multiple WiFi Networks Safely
Try SSIDs sequentially with timeout and internet check.
Continuous Integration: GitHub Actions Build
CI to compile firmware on push.
Designing a Mini Mesh with ESP‑NOW
Relay sensor packets via intermediate nodes.
ESP-NOW Basics
Peer-to-peer fast packet exchange without router.
ESP32 WebServer (Async) Basics
Serve a page and a simple JSON API.