Components and supplies
Pushbutton switch 12mm
LED (generic)
Resistor 100 ohm
Breadboard (generic)
Jumper wires (generic)
Resistor 221 ohm
Buzzer
9V battery (generic)
Resistor 10k ohm
Arduino UNO
Project description
Code
Siren Code Arduino
Here is the code!
Siren Code Arduino
Here is the code!
Downloadable files
Circuit & Connections
STEP A: (Connecting LED) As we are basically building a siren, red and blue flashes look cool. So take 5 red and 5 blue LEDs. Now, connect the negative terminal of these LEDs with a 220 ohm resistor (current limiting) to the negative rail of the breadboard as shown in the circuit diagram. Positive ends of red LEDs are connected to pin 3 to pin 7, while the positive ends of blue LEDs are connected to pin 8 to pin 12 of Arduino's digital pin. STEP B: (Connecting Piezo Buzzer) Now, it's time to connect our buzzer and the pushButton to the breadboard. Connect the Piezo buzzer with a 100 ohm resistor to the negative rail and positive end of buzzer connected to pin 13. STEP C: (Connecting pushButton) Connect one out of four pins of pushButton with pin 2 and connect down it to GND rail using a pull down resistor of 10k ohm. Connect 5V with another button pin as shown in the circuit diagram.
Circuit & Connections
Circuit & Connections
STEP A: (Connecting LED) As we are basically building a siren, red and blue flashes look cool. So take 5 red and 5 blue LEDs. Now, connect the negative terminal of these LEDs with a 220 ohm resistor (current limiting) to the negative rail of the breadboard as shown in the circuit diagram. Positive ends of red LEDs are connected to pin 3 to pin 7, while the positive ends of blue LEDs are connected to pin 8 to pin 12 of Arduino's digital pin. STEP B: (Connecting Piezo Buzzer) Now, it's time to connect our buzzer and the pushButton to the breadboard. Connect the Piezo buzzer with a 100 ohm resistor to the negative rail and positive end of buzzer connected to pin 13. STEP C: (Connecting pushButton) Connect one out of four pins of pushButton with pin 2 and connect down it to GND rail using a pull down resistor of 10k ohm. Connect 5V with another button pin as shown in the circuit diagram.
Circuit & Connections
Hardware Required
Hardware Required
Comments
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capfacts
7 months ago
I fixed an error on the tinkercad model, the piezo buzzer should be direct to ground, there is no need for a resistor.
Anonymous user
2 years ago
Oh, almost forgot. It only works again after you reset the Uno.
coding_killer
2 years ago
Transition from 1st Siren to another one can be controlled by the push-button but it should be pressed at an appropriate moment(when tone is low). The reset button after the 7th Siren(last one) is compulsory. You can't go to any of the tones after the last siren starts sounding although by changing the code. The issue is solved only by using the Interrupts.
Anonymous user
2 years ago
I built your siren and it works on power up. However, the switch has no effect when pressed. The patterns run through one cycle and then it ends, only to come on again by itself after some time. Any ideas?
Anonymous user
2 years ago
have u found a solution for this problem yet?
coding_killer
2 years ago
Bro...I am facing the same problem in my project too...I have figured it out that, By pressing the button at a specific moment will changes the tone/transition.(Your button will work if you press the button at the time when the tone is low.) To alleviate from this problem... you can check for the state changing from low to high rather than simply checking for the pin(button pin) is high on an interval. That means we have to use the "INTERRUPTS" so that it may react to the button events instantaneously regardless of what is happening inside your void loop(). I haven't applied it yet but I will notify you when upload the new code! You might understand Interrupts from following link: https://youtu.be/CRJUdf5TTQQ
olivier123siren
4 years ago
how do u make the push button work?
RossAnderson
7 years ago
Oh, almost forgot. It only works again after you reset the Uno.
coding_killer
2 years ago
Transition from 1st Siren to another one can be controlled by the push-button but it should be pressed at an appropriate moment(when tone is low). The reset button after the 7th Siren(last one) is compulsory. You can't go to any of the tones after the last siren starts sounding although by changing the code. The issue is solved only by using the Interrupts.
RossAnderson
7 years ago
I built your siren and it works on power up. However, the switch has no effect when pressed. The patterns run through one cycle and then it ends, only to come on again by itself after some time. Any ideas?
coding_killer
2 years ago
Bro...I am facing the same problem in my project too...I have figured it out that, By pressing the button at a specific moment will changes the tone/transition.(Your button will work if you press the button at the time when the tone is low.) To alleviate from this problem... you can check for the state changing from low to high rather than simply checking for the pin(button pin) is high on an interval. That means we have to use the "INTERRUPTS" so that it may react to the button events instantaneously regardless of what is happening inside your void loop(). I haven't applied it yet but I will notify you when upload the new code! You might understand Interrupts from following link: https://youtu.be/CRJUdf5TTQQ
olivier123siren
2 years ago
have u found a solution for this problem yet?
coding_killer
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How to Make a Siren Using Arduino | Arduino Project Hub
taz108am
4 months ago
Well, spent most of my morning building the breadboard and connecting to my Uno. Then another longer than needed time to get the coding into the ide. Only to be told 'Failed uploading: no upload port provided'. Any ideas? This is my third attempt at doing something through this forum, with no response from the other 2 about any problems I am facing.