4 Projects
Relay Projects
Explore beginner-friendly projects using Relay. Run them in the simulator, tweak the code, and learn step by step.
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IoTSimulator TeamOct 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
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IoTSimulator TeamOct 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
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IoTSimulator TeamOct 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
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IoTSimulator TeamMini Smart Greenhouse Climate Automator with Arduino
Build an automated greenhouse climate controller using a DHT22 sensor, I2C LCD1602 display, simulated cooling ventilation fan, and heating elements.
Arduino UnoDHT22 +6