Blog
Blink an LED on Arduino in Your Browser — No Board Needed
No board, no problem. Build the classic Arduino blink circuit in a free browser simulator, understand the four lines of code that matter, and learn which mistakes still get you when you plug in real hardware.
ESP32 MQTT Smart Home: Send Sensor Data to the Cloud in 30 Minutes
Your sensor data is trapped on your laptop. MQTT fixes that. Send ESP32 temperature and humidity readings to a free cloud broker and watch them live from any browser in 30 minutes.
ESP32 + LoRa: Build a Long-Range Wireless Sensor Node (Up to 8km)
WiFi dies at 50 meters. LoRa reaches 8 kilometers. Build a battery-powered ESP32 LoRa sensor node with deep sleep, UART serial, and 1W transmission power. Full wiring and code included.
ESP32 Smart Garden: Auto-Watering System with Soil Moisture Sensor
Build a fully automatic ESP32 smart garden that monitors soil moisture 24/7 and waters your plants only when they actually need it. Full wiring, calibration, and Arduino code included.