Explore full step-by-step DIY tutorials, circuit schematics, pin mapping, tested Arduino code, and mathematical explanations for every project.
Calculate scale vehicle speeds using dual IR gate sensors, display velocity in km/h on a 16x2 I2C LCD, and trigger a warning buzzer if limits are breached.
Assemble a 4WD chassis with an L298N motor driver and HC-05 module to steer robotic vehicles wirelessly via a custom smartphone controller app.
Implement optical reflectance infrared arrays and closed-loop control algorithms to guide an autonomous robot along complex track lines.
Mount an HC-SR04 ultrasonic radar onto an SG90 micro-servo to scan 180-degree environments and dynamically navigate around physical barriers.
Interface a digital DHT11 sensor with an Arduino Uno and display live heat index, ambient temperature, and relative humidity on an LCD screen.
Construct a digital tape measure using acoustic sound wave echo timing, calculating millimeter-accurate distances with visual and audio alerts.
Learn analog-to-digital conversion (ADC), pulse-width modulation (PWM), and voltage dividers to smoothly fade and control high-power LEDs.
Master digital output pin registers, non-blocking time delays with millis(), array loops, and multi-pattern LED sequencer circuits.
Deploy lightweight quantized convolutional neural networks onto microcontrollers to classify handwritten digits in real time.
Train acoustic spectrogram models with Edge Impulse and Arduino to control robots using distinct sound frequencies and spoken keywords.
Integrate barometric pressure, photoresistor light levels, and ambient temperature sensors to display meteorological forecasts on a screen.
Safely control high-voltage household AC appliances and lighting through 5V optocoupler relay modules, motion sensors, and automated timers.