The initial goal of developing Arduino was to make a microcontroller device at a low price. Besides the cheap price, Arduino is also supported by a library program that makes it easy to write and program algorithms. With this reliability Many electronic Arduino projects or robots that use the Arduino system. Arduino projects that are the most popular and most widely made include:
The digital clock is a numerically based time pointer. Around us, of course, there are already many types of digital clocks. But by using Arduino we can provide more functions on the digital clock. An example is a digital clock in mosques, in which we can add a countdown timer program for iqamah or calendar and days in one package.
Detect rain with the Rain Sensor Module
The important thing you need to know is the working principle of this sensor. So when there is rain and the water hits the panel on the sensor. There will be an electrolysis process by rainwater and then the rainwater will automatically flow electric current. Then if you observe the picture above on the sensor module there is also a comparator IC whose output can be in the form of logic HIGH and LOW. Also in this module, there is an output in the form of voltage. So that it can be connected to the Analog-Digital Converter pin on Arduino. That’s a brief knowledge of rain sensors.
Proximity sensor and buzzer
It is also one of the simple Arduino projects. This time we will try to make an alarm that can detect a distance. The sensor that we will use in this tutorial is the Ultrasonic HC-SR40 sensor, while for the output we will use Buzzer. This tutorial can later be applied to various cases, for example for a car parking alarm system. Great right?
Make melody with Buzzer
This buzzer is commonly used to make alarm circuits for various purposes because besides being cheap these components are also very supportive of being applied to electronic circuits.
Please note that there are 2 types of the buzzer, namely the first type of passive buzzer that does not have its own voice, it means that the high and low voices can be our own program. While the second type is the Active Buzzer which already has its own sound when we connect to the power supply. and for Indobot friends, if you want to situs judi online program the buzzer using Arduino it is more suitable to use the type of passive Buzzer.