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“Hey up there! Here’s my new basic project for all ages! I am here again with another Arduino Nano project. Today we are going to create a device that emits ultrasonic waves in the air that could be possibly repelled mosquitoes, cockroaches, rats or even create a dog whistle. This is a multi-purpose project with Arduino Nano! Come on, go ahead and read some information below. This is also known as The Project E.U.E or Electronic Ultrasonic Emitter with a version of basic. This is a traditional stuff device that could possibly repel mosquitoes, cockroaches, rats or even use as a dog whistle. The Project E.U.E consists of 4 electronic components including the 2 pin jumper and the black wire. The project is controlled by a microcontroller which is the Arduino Nano Atmega 328P. It has one speaker (piezo passive buzzer) that emits frequency from 20Khz to 170KHz (the real problem here is that the Nano has only 65535 maximum frequency so that this project emits frequency from 20KHz to 65KHz in reality). These ranges are safe and not annoying because it is completely no noise from this device. It has a light indicator (besides the LED indicator on the Arduino Nano) which is the RGB Module. The RGB module is optional it’s up to you if you want to have an indicator to your device because, for me, it is a lot easier to recognize my working device at night when it’s dark. I made it blinky to feel like I am watching blinky Fireflies at night lol.”

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