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Distance Measurement by Ultrasonic Sensor

Ultrasonic sensor is very popular electronic sensor in automation and IoT platform which is mainly used to measure the distance. Ultrasonic sensor works based on sending ultrasonic sound signal to the target. It sends ultrasonic pulses to the target at the speed of sound and receives the echo signal. The distance is measured based on…

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Interfacing LM35 with Arduino

In many IoT projects, process temperature interlocking is very important. Consider a simple project where we need to turn on a fan/AC when the temperature is above certain degree which act as setpoint. In this kind of projects, a temperature sensor senses the temperature and passes the temperature value to the controller. Then the controller…

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LED Dimmer using Arduino

In the previous tutorials[1][2], we have discussed how to blink LEDs using Arduino boards. In this work, we will discuss how the brightness of LED can be controlled by controlling the applied voltage. This project is also known as LED Dimmer circuit using Arduino. At full voltage, the brightness of the LED is highest and…

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LED Blinking using Arduino without Delay

In our previous blog, we have discussed a simple LED blinking project with the delay() function. Some time we need to do multiple works in one Arduino board and the code gets complex. The unnecessary usage of delay blocks can create problem. In this work, a simple project on LED Blinking using Arduino without Delay…

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