ConclusionĪ fun DIY Project called Arduino based Piano is implemented here. You can try to generate sounds of different frequencies using that function. During repeat mode, it stays OFF.Īn important point to understand here is that I did not use the tone() function of Arduino. when the buttons are being pressed, the LED on pin 13 stays ON. As soon as the Arduino enters Interrupt Mode, all the previously pressed tones are played back through the Piezo Buzzer.ĭuring normal tone playback i.e. Once you are done with the tone, you can push the Interrupt Button. makes note of the sequence of the buttons, its on time and off time. With each button pressed, Arduino starts recording i.e. Now for the record and repeat mode, play a few tones using different buttons. When a button is pushed, that particular PWM signal is generated through the Piezo Electric Buzzer. Once the power to the circuit is turned on, Arduino is ready to accept the input from the buttons.Įach button is associated with a PWM signal in the code.
#Arduino piezo code#
Make the connections as per the circuit diagram and upload the code to Arduino.
#Arduino piezo how to#
The code for the project How to make Arduino based Piano is given below. I have used the on-board LED (LED connected to Pin 13) to indicate between regular tone play and recorded tone play. The other end of this button is also connected to GND. Finally, another push button is connected to Pin 2 of Arduino to act as an Interrupt pin. I have used the INTERNAL PULL UP feature of Arduino and hence I haven’t connected any external pull-up resistors to these pins.Īll the other terminals of these push buttons are connected to GND. Now, connect 7 Push Buttons to digital I/O pins 3 through 9 of Arduino. The other end of the Piezo Buzzer is connected to GND. It is necessary that you connect the Piezo Buzzer to one of the PWM capable pins of Arduino. its positive terminal to Pin 10 of Arduino. The design of Arduino Piano circuit is very easy.
The other way to generate tones using Arduino is to use the function tone () function. I will be using this feature of Arduino to generate tones.
We know that Arduino is capable of producing PWM signals. Instead of asking how to make an Arduino based Piano, the correct question should be how to generate different tones using Arduino. None the less, sounds and tones can provide a great audio feedback in our projects. The Arduino based Piano project comes under the category of fun projects as you know, this project doesn’t have any real world applications (at least not directly) but can be used to understand certain features of Arduino (like its sound producing capabilities using the tone () function). Sometimes, we make projects just for fun like 8x8x8 LED Cube, Hand Gesture Control of Computer, etc. We have seen some application oriented projects using Arduino like Heart Rate Monitor, Robotic Arm, Home Automation, etc.
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