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Questions tagged [piezo]

refers to the prefix of Piezoelectricity.

Use this tag when asking a question related to the use of a piezoelectric component.

52 questions
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Noise on piezo analog read due to Arduino power supply

I am making a device that measures temperature and vibrations and records the values onto an SD card. It will be a standalone device. The hardware used: - Arduino Uno - PCF8523 RTC clock - MAX3186 + PT100 RTD temperature sensor - Adafruit data…
YouKnowNothingJohn
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4
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2 answers

Multiple tones with one piezo buzzer

I have figured out how to make a piezo buzzer play two tones at once with analogWrite() and tone() but how would I make an actual song by playing both bass and treble, such as this one. Here is the circuit I had to do it: and here is the code I had…
user29569
3
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1 answer

Push-Pull tone code

I wanted to use a piezo sounder to sound an alarm in an application. Testing indicated that tone() was not very loud. I could use some external circuitry to swing the pins ±5V but as I have plenty of spare pins, it seemed feasible to use 2 pins…
Milliways
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How do I make my piezo buzzer only hum once without repetition?

I have a problem with getting my buzzer to only do the tones I programmed in once. I know I have to add some sort of code but I'm relatively new to this so I don't really know. I want it to start playing the tones I have in the code once I press the…
Éemia
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1.7 MHz generator for a water atomizer

I'm creating a controller for a small greenhouse, I have a DHT22 for measuring and two relay module that controls heating and cooling systems, and I will use a piezo to produce humidity when it goes below X amount. This piezo works at 1.7 MHz and I…
Edgard
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1 answer

Arduino play many piezo at once

I need to play sound on 10 piezos at once. How to do that without delay() function.
Lowder
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1 answer

Amplify Piezo Sensor

I am trying to amplify a piezo sensor per the instructions found at the link below. I am not trying to trigger a buzzer only print to the serial monitor whether the vibration was detected or not. I am a NOOB with respect to circuits and unable to…
GBG
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How do you use two piezos at the same time?

I'm trying to replicate a short music clip with two piezos, and I want them to play at the same time. While the right piezo is playing, I want the left one to still be looping. The problem is, I'm not sure how. //Left hand const int leftPin = 10;…
Harrisino
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Using millis() instead of delay() when playing a melody

I want to make my Arduino to play several simple melodies, and also be able to skip a melody by pressing a button and go on with the next song. therefore I cannot use delay() because the code should constantly check if a button is pressed. So I…
Rsoc2002
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Multitasking with Arduino?

I am making a Christmas Tree with Arduino. I found a 12 led chaser code on internet so I made 12 rows of leds and hook them up to my Arduino pro mini. They are working just fine. However, I also want to add music with piezo buzzer while running the…
Anmol Kumar
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Piezo sensor requires parallel or pull-down resistor?

Apologies but I didn't happen to find ultimate answer to this. I'm trying to make a simple piezo sensor (https://www.sparkfun.com/products/10293) which triggers something (e.g. a sound or lights up a LED) when it's pressed. This is similar to…
kuma
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Arduino IDE on Attiny45: What kind of power does a chip need?

I have this little AtTiny45 which I'm loading a program with Arduino as ISP. My goal to use this chip along with a op amp, a piezo buzzer and a press button, and have it automatically sleep between uses. I intend to use 2 3V pill batteries in…
B7th
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Shall an active piezo buzzer module draw as much as 10mA on its signal pin?

I have connected an active piezo buzzer to my arduino: KY-012 Active buzzer module. I was a bit surprised that it drew like ~10mA on the signal pin from my nodemcu, which I find a bit weird, since the signal generator itself is powered separately.…
darkmattercoder
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Proper use of the tone() function within the loop () function

I am trying to have my sketch run a short series of tones (melody) through a Piezo buzzer after a selection is made by the user. I am getting a compilation error with my use of the tone function in the code I've written. I would kindly ask if…
Stevie_D
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Using 2 piezo buzzers to emit the same tone with phase difference

For a physics project, I want to record the effect of 2 speakers emitting 100hz at different phase differences. Trouble is, the Arduino can only send one tone() signal at a time. How do I create a phase difference effect using one Arduino?
Dan
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