📚 Archive
2025 (50 posts)
September 2025
- 20 Sep 2025 (11 posts)
- ADC: Read Potentiometer & Filtering · 1 min read
- Blink LED & Serial Monitor · 1 min read
- Button: Debounce & Interrupt · 1 min read
- I2C on ESP32: Scan & Read · 1 min read
- OLED SSD1306: Display Sensor Data · 1 min read
- OneWire DS18B20: Multiple Sensors · 1 min read
- PWM/LEDC: Fading an LED · 1 min read
- Reading DHT11/DHT22 or AHT10/AHT20 · 1 min read
- SPI on ESP32: Basics & SD Card · 1 min read
- UART: Communicating with Modules · 1 min read
- Ultrasonic HC-SR04 with Median Filter · 1 min read
- 18 Sep 2025 (37 posts)
- Arduino Core vs ESP-IDF: When to Switch · 1 min read
- BLE GATT: Read/Write a Characteristic · 1 min read
- BLE Notifications to a Mobile App · 1 min read
- Build Flags & Reduce Firmware Size · 1 min read
- Connect to Multiple WiFi Networks Safely · 1 min read
- Continuous Integration: GitHub Actions Build · 1 min read
- Designing a Mini Mesh with ESP‑NOW · 1 min read
- ESP-NOW Basics · 1 min read
- ESP32 WebServer (Async) Basics · 1 min read
- ESP32‑CAM: Stream & Snapshot API · 1 min read
- File Upload via Web UI (SPIFFS) · 1 min read
- FreeRTOS Basics: Task & Queue · 1 min read
- HTTP Client: GET/POST with Retry · 1 min read
- HTTPS Client: Certificate/Fingerprint · 1 min read
- Memory & Partitions (partitions.csv) · 1 min read
- Minimum Security Best Practices · 1 min read
- MQTT Basics: Pub/Sub & Keepalive · 1 min read
- MQTT over TLS (CA/Client cert) · 1 min read
- NTP Time Sync + DS3231 Fallback · 1 min read
- OTA Update: Web Updater & HTTP · 1 min read
- Power Saving: Deep Sleep & Wake Sources · 1 min read
- Preferences (NVS): Store Key‑Value · 1 min read
- Prevent Freezes: WDT, Auto‑Reconnect, Brown‑Out · 1 min read
- Project: Door Sensor to MQTT via ESP‑NOW · 1 min read
- Project: Low‑Power Temperature Logger · 1 min read
- Project: Mini Weather Station · 1 min read
- Project: RGB Night Light (Web/BLE Control) · 1 min read
- Project: Smart Switch with Energy Meter · 1 min read
- PZEM004T v3: Energy Monitoring Basics · 1 min read
- Send Data to the Cloud (Workers/ThingsBoard) · 1 min read
- SPIFFS/LittleFS: Read/Write JSON · 1 min read
- Timers & Ticker: Schedule Sensor Reads · 1 min read
- Topic Design, QoS, and LWT · 1 min read
- Troubleshooting WiFi/MQTT: Checklist · 1 min read
- Unit Testing with PlatformIO · 1 min read
- Watchdog (WDT) & Safe Boot · 1 min read
- WebSocket Realtime Updates · 1 min read
July 2025
- 02 Jul 2025 (1 post)
- Setting up PlatformIO & Arduino IDE for ESP32 · 1 min read
- 01 Jul 2025 (1 post)
- Introduction to ESP32 & Its Ecosystem · 1 min read