Every Arduino tutorial here is built and tested on real hardware — no untested copy-paste code. You’ll find sensor integrations, motor control, displays, RFID, and complete project builds, each with a wiring diagram and sketch. The boards below are the same pre-soldered Nanos and Megas used in the guides.
Shop the parts used in these tutorials
ESP32 MPU6050: Build a Wrist Sleep Tracker
Build an ESP32 + MPU6050 wrist-worn sleep tracker that logs motion all night and plots deep sleep vs REM from activity, using...
ESP32 ADS1115: Monitor 4 Soil Sensors via Wi-Fi
Build an ESP32 + ADS1115 multi-plant soil monitor that reads 4 moisture sensors and serves live Wi-Fi dashboard values for easier watering...
ESP32-CAM HX711 PIR: Motion photos with seed weight
Build an ESP32-CAM bird feeder that uses a PIR sensor to snap photos and an HX711 load cell to log seed weight...
Arduino Nano HC-SR04 Theremin: Gesture Pitch Control
Build an Arduino Nano ultrasonic theremin with an HC-SR04 sensor and KY-006 buzzer for gesture-controlled pitch in about 20 minutes with ShillehTek...
ESP32 DS18B20: Wi-Fi Smoker Thermometer Alerts
Build an ESP32 DS18B20 Wi-Fi BBQ thermometer with OLED readout and Telegram alerts, so you can monitor long smoker cooks remotely with...
ESP32 Relay: Build a Wi-Fi Smart Plug
Build an ESP32 + relay Wi-Fi smart plug you can control via web UI or MQTT, with Tasmota-compatible options and no cloud...
ESP32-S3 NEO-6M: No-SIM LoRa GPS Tracker
Build an ESP32-S3 NEO-6M SX1262 no-SIM LoRa GPS tracker that transmits live coordinates to a base station for off-grid location tracking with...
Arduino Nano MAX30102: OLED Pulse Oximeter Build
Build an Arduino Nano MAX30102 pulse oximeter with an SSD1306 OLED for live BPM and SpO2 readout using simple I2C wiring and...
ESP32-CAM HC-SR501 PIR: Motion Photo Alerts via Wi-Fi
Build an ESP32-CAM doorbell with an HC-SR501 PIR sensor that snaps a photo on motion, saves to microSD, and sends Wi-Fi alerts...
ESP32 HX711: Beehive Weight and Climate Dashboard
Build an ESP32 beehive monitor with HX711 weight sensing plus DS18B20 and DHT22 climate data, then view trends remotely on a Wi-Fi...
ESP32 MQ-135: Air Quality Dashboard with OLED
Build an ESP32 air quality dashboard using an MQ-135, DHT22, and SSD1306 OLED, with live readings on-screen and on a Wi-Fi web...
ESP32 Reed Switch Relay: Remote Garage Door Control
Build an ESP32 garage door controller with a reed switch and relay for remote open/close and real-time door status alerts over Wi-Fi,...