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RM25.00DescriptionThis L293D shield for Arduino, particularly Arduino UNO, CT-UNO, is perfect for driving 4 brush motors or 2 stepper motors and it can even supports RC servo motor. It also equiped with serial to parallel expansion IC 74HC595.
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HC-SR04 Ultrasonic Distance Range Finder Sensor for Arduino
RM5.00DescriptionIf you’ve been searching for distance measurement and object detection sensors at a rock-bottom price, look no further! This legendary HC-SR04 ultrasonic sensor is your perfect choice. It offers excellent range accuracy and fairly stable readings at a very low cost. It requires two digital I/O pins (an output pin and an input pin) to interface with it.
An ultrasonic sensor is created based on the principle of echolocation used by animals like bats and dolphins. Since the ultrasonic sensor uses sonar to determine the distance to an object, its operation is not affected by sunlight, spotlight, and object’s surface color which will affect the readings of any infrared distance sensors. However acoustically soft materials such as clothes can be difficult to detect.
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Photosensitive Sensor Module (LDR sensor module)
RM5.00The Light sensor module comes with the basic components for light detection. Supplying power and it is good to be used. Use it to detect the light brightness in your environment and decide to switch OFF or ON light. Or maybe adjust the brightness of the LED for your house? It comes with digital and analog output. You can adjust the threshold (sensitivity) of the digital output by tuning the onboard variable resistor (potentiometer). Simple usage as it is a digital output, so you will know if the light is presented and decide what to do with it. Check the schematic for more details.
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