📚 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