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Explore beginner-friendly IoT and microcontroller projects.
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Arduino Single-Axis Solar Tracker with Dual LDRs and Servo
I
IoTSimulator Team
Oct 24, 2026

Arduino Single-Axis Solar Tracker with Dual LDRs and Servo

Maximize solar panel energy harvest with an intelligent single-axis sun tracker that pivots toward the brightest light source in real time.
Arduino UnoPhotoresistor (LDR) +3
Arduino Fire Alarm & Gas Leak Detector with Siren and Relay
I
IoTSimulator Team
Oct 24, 2026

Arduino Fire Alarm & Gas Leak Detector with Siren and Relay

Build a dual-threat hazard monitor that spots flames and gas leaks simultaneously using an Arduino, flame sensor, gas sensor, emergency relay exhaust, and loud audio alarm.
Arduino UnoGas Sensor +6
Arduino Smart Parking Barrier & Slot Counter with Ultrasonic Sensor
I
IoTSimulator Team
Oct 24, 2026

Arduino Smart Parking Barrier & Slot Counter with Ultrasonic Sensor

Build a smart parking lot gate with entry and exit ultrasonic sensors, a servo barrier arm, green and red traffic lights, an audio chime, and live slot tracking on an LCD.
Arduino UnoUltrasonic (HC-SR04) +5
Arduino Automatic Plant Watering & Soil Moisture Irrigation System
I
IoTSimulator Team
Oct 24, 2026

Arduino Automatic Plant Watering & Soil Moisture Irrigation System

Build an automatic plant watering system using an Arduino Uno, an analog soil moisture probe, an I2C LCD screen, and a relay-switched water pump with hysteresis control.
Arduino UnoPotentiometer +2
Arduino Digital Kitchen Scale with HX711 Load Cell and LCD
I
IoTSimulator Team
Oct 24, 2026

Arduino Digital Kitchen Scale with HX711 Load Cell and LCD

Build a precision digital scale using an Arduino, an HX711 24-bit load cell amplifier, a one-touch tare button, and live gram readouts on an I2C LCD screen.
Arduino UnoHX711 Load Cell +3
Arduino Flood Early Warning & Water Level Monitor with Ultrasonic
I
IoTSimulator Team
Oct 24, 2026

Arduino Flood Early Warning & Water Level Monitor with Ultrasonic

Build an automated flood warning station using an Arduino, an ultrasonic sensor to track rising water levels, a 10-segment LED bar graph, and an emergency audio siren.
Arduino UnoWater Tank Actor +3
Arduino Smart Solar Streetlight with LDR and PIR Motion Sensor
I
IoTSimulator Team
Oct 24, 2026

Arduino Smart Solar Streetlight with LDR and PIR Motion Sensor

Build an energy-saving smart solar streetlight using an Arduino Uno, an LDR ambient light sensor, a PIR motion detector, and a relay-switched high-lumen street lamp.
Arduino UnoPhotoresistor (LDR) +4
Arduino Touchless Smart Dustbin with Ultrasonic Sensor and Servo
I
IoTSimulator Team
Oct 24, 2026

Arduino Touchless Smart Dustbin with Ultrasonic Sensor and Servo

Build a hygienic touchless trash bin using an Arduino Uno, an HC-SR04 ultrasonic sensor, and an SG90 micro servo that automatically opens when your hand approaches.
Arduino UnoUltrasonic (HC-SR04) +2
Build a 4-Key Piano Synthesizer with a Raspberry Pi Pico W
I
IoTSim Editor
Oct 11, 2026

Build a 4-Key Piano Synthesizer with a Raspberry Pi Pico W

Build an interactive musical synthesizer with the Raspberry Pi Pico W. Play distinct notes (Do, Re, Mi, Fa) using 4 tactile pushbuttons, driving a piezo audio buzzer with synchronized color-coded LED visual indicators.
Raspberry Pi PicoPushbutton +2
Build a Smart Climate Monitor with a Raspberry Pi Pico W
I
IoTSim Editor
Oct 10, 2026

Build a Smart Climate Monitor with a Raspberry Pi Pico W

Build an environmental weather station with the Raspberry Pi Pico W. Acquire temperature and humidity metrics from a digital DHT22 sensor, render a real-time 128x64 dashboard on an SSD1306 OLED display, and stream JSON telemetry.
Raspberry Pi PicoDHT22 +2
Control a Servo Positioner with a Raspberry Pi Pico
I
IoTSim Editor
Oct 9, 2026

Control a Servo Positioner with a Raspberry Pi Pico

Build a servo angle positioning dial with the Raspberry Pi Pico. Map analog potentiometer readings into 50Hz PWM pulse widths to command an SG90 micro servo from 0° to 180° with endstop boundary alerts.
Raspberry Pi PicoPotentiometer +2
Build a Light Meter and Alarm with a Raspberry Pi Pico
I
IoTSim Editor
Oct 8, 2026

Build a Light Meter and Alarm with a Raspberry Pi Pico

Build an optical light meter with the Raspberry Pi Pico. Measure real-time ambient illumination using an LDR analog sensor on the RP2040 ADC and trigger audio-visual warnings when sudden darkness occurs.
Raspberry Pi PicoPhotoresistor (LDR) +2