Learn how to use the KY-019 5V Relay Module with Arduino. A relay is an electrically operated switch that allows a low-power digital circuit (like an Arduino) to control a high-power AC or DC circuit (like a lamp, motor, or appliance).
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Learn how to read analog input from the KY-018 Photoresistor Module using an Arduino Uno and display the raw light intensity values on the Serial Monitor.
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Learn how to use the KY-017 Mercury Tilt Switch Module. This module contains a glass bulb with a small amount of mercury that completes an electrical circuit when tilted.
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Learn how to use Pulse Width Modulation (PWM) with Arduino digital output pins to interface with the KY-016 RGB Full Color LED Module.
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Learn how to use the KY-015 Temperature and Humidity Sensor Module with Arduino. This module typically integrates a DHT11 or similar sensor.
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Learn how to use the KY-013 Analog Temperature Sensor Module (which uses a Thermistor) with Arduino.
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Learn how to use the KY-012 Active Buzzer Module with Arduino. This module contains an internal oscillator, allowing it to generate a loud, fixed-frequency tone simply by applying a HIGH digital signal.
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This tutorial focuses on controlling the KY-011 Two-Color LED Module using Arduino. Learn how to configure Arduino digital output pins and use Pulse Width Modulation (PWM) to achieve color mixing
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Learn how to use the KY-010 Photo Interrupter Module with Arduino. This module is a non-contact switch that detects when an opaque object passes between its emitter (IR LED) and detector (phototransistor).
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Learn how to use Pulse Width Modulation (PWM) with Arduino digital output pins to interface with the KY-009 RGB Full Color LED SMD Module.
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