Arduino Nano Tutorials

Build an Arduino Nano MQ-2 gas and smoke alarm with a buzzer threshold alert, plus optional OLED readout and ESP32 Wi...

Build an AC 220V time delay relay mains timer with optional ESP8266 WiFi triggering for fans, pumps, and lights using...

Build an Arduino Nano USB ultrasonic mist maker diffuser with relay control, WS2812B lighting, and a soil sensor opti...

Compare Arduino Nano resistive vs capacitive soil moisture sensors to get stable long-term readings, avoid corrosion ...

Build an Arduino Nano MAX30102 pulse oximeter that shows live BPM and optional SpO2 on an SSD1306 OLED, using the Spa...

Build an Arduino Nano clock with a DS3231 RTC and TM1637 display for a drift-free desktop alarm clock with temperatur...

Build a hidden touch switch using an Arduino Nano and TTP223B to toggle a relay through acrylic or wood, for clean en...

Build an Arduino Nano motion detector using the RCWL-0516 microwave radar sensor to switch a relay, with reliable thr...

Build a USB-C PD bench power supply with a PDSink trigger board and buck converter for adjustable 1.5–19V output usin...

Build an Arduino Nano MAX6675 K-type thermocouple reader with OLED display and optional over-temp relay cutoff for sa...

Wire an Arduino Nano to a TCA9548A I2C multiplexer to run up to eight identical 0x3C OLEDs or sensors without address...

Build an Arduino Nano menu UI using a KY-040 rotary encoder and SSD1306 OLED for smooth scroll-and-click navigation w...