Raspberry Pi, ESP32 & Arduino Tutorials

Wire an Arduino Uno to an A4988 stepper driver to spin a stepper motor forward and reverse, with speed control via STEP/DIR...

Build a Raspberry Pi Pico W and MQ135 setup that reads analog air quality values with MicroPython, printing live ADC data to...

Build an Arduino Uno MQ135 air quality sensor setup that prints live analog readings to the Serial Monitor for quick testing and...

Build an ESP32 2-channel relay controller to switch two loads reliably with Arduino code, with shared ground and stable 5V power tips...

Build an Arduino UNO 2-channel relay module controller to switch two loads with active LOW support, clean wiring, and reusable helper functions...

Build a Raspberry Pi Pico W 2-channel relay controller with MicroPython to switch two loads safely using shared ground, 5V relay power,...

Build an ESP32 + TCS3200 (GY-31) color sensor project that calibrates on black and white, then prints normalized RGB and color names...

Build an ESP32-controlled LCD1602 16x2 display with a logic level shifter to blink "Hello, World!" reliably using 5V LCD signaling from ShillehTek.

Wire a DHT22 to an ESP32 and print humidity plus temperature in Celsius and Fahrenheit to the Arduino Serial Monitor. Includes wiring...

Build a Pico W WAV player with a 3.5mm audio jack breakout using MicroPython PWM, convert audio on Mac, and end playback...

Build a handheld Snake console using a Raspberry Pi Pico 2W and ILI9341 SPI TFT. Learn joystick ADC control, PWM buzzer sound,...

Build an ESP32 + HC-SR04 door presence alert that sends Telegram notifications when someone stands at your door, using low-cost hardware and...