A physical effect that translates mechanical stress to generated voltage. It is a reciprocal effect, so the application of voltage can induce stress/strain. Used for speakers/microphones, load cells to measure weigh and most commonly in strikers for igniting BBQ's and lighters. A common material ...
0
votes
3answers
45 views
Piano keys touching detection
I would like to make glove with pressure sensor on each finger to detect a moment when piano player touches a key. What kind of sensor should I use? I tried use simple buttons, but it is very ...
3
votes
0answers
66 views
Charge mode piezoelectric signal conditioning
I have a charge-mode piezoelectric dynamic pressure sensor (datasheet link) that I want to read a signal from. If you look at the datasheet it says the sensor outputs are in a balanced and floating ...
1
vote
4answers
123 views
How do I multiplex many signals into my sound card?
I'm looking for a recipe that will allow me to...
Hook 24 piezos to a box that will "multiplex" their output into a single signal that I can connect to the microphone input on a PC soundcard.
The ...
2
votes
1answer
86 views
Removing a piezo transducer from a reference design
I'm building a system which is intended to supply a microcontroller with a smoke-detection alarm. I'm currently intending to base the circuit on a Microchip RE46C190, which I can source fairly easily.
...
0
votes
1answer
64 views
From Synapse RF Engine to PIC
I made a little program on my Synapse RF Engine to detect some vibrations and then turn on a light basically.
What I want to know is how do I get this prototype to an actual PIC that I can connect ...
3
votes
2answers
149 views
Charge Model vs Voltage Model for Piezo Electric Sensor
The following document describes signal conditioning circuits for Piezeoelectric sensors. I was interested in knowing which model should I use when designing signal conditioning circuit for ...
-2
votes
2answers
172 views
piezo vs mems accelreatometer for earthquake [closed]
if i want to detect earthquake based on acceleration, what kind of accelerometer is better?
Piezo or MEMS
6
votes
2answers
1k views
Driving 50W-250W ultrasonic transducers with sine: Any Class B 135KHz monolithic power amp ICs?
My project needs to drive a medium power ultrasonic piezoelectric transducer from a sine wave (/ sawtooth) sweep generator that sweeps +/- 2% of the transducer resonant frequency.
The question: What ...
0
votes
0answers
78 views
How to start a fire with piezoelectric without using any gases [closed]
I'm trying to ignite a fire using a piezo eletric. Is there any suitable fuse that I can use?
Any recommendation.
1
vote
2answers
379 views
Using Low votage audio amplifier with a load cell
I am trying to hack a scale so that I can read the data onto my Arduino. There are four piezo sensors, one at each foot, in the scale. Obviously I can't just read straight off of the sensors, so I ...
7
votes
3answers
356 views
How to diagnose crosstalk
I am completely new to electronics, and am trying to learn by building an electronic drum set. I've found lots of examples online of circuits to condition the output from a piezo to be read by a ...
1
vote
2answers
156 views
Sample application for generating energy from Piezeo Electric Crystal.?
I am working on a project where I need to prove that Piezeo electric crystal can help us to generate electricity and can be applicable on streets.My question is that where can I find suitable ...
2
votes
2answers
220 views
Circuit movement detector
I'm looking for some simple schematic for movement detection.
I want to use it with a small hobby project of my own to detect if someone is moving the box, doesn't matter the direction. I'm looking ...
1
vote
3answers
261 views
Controlling piezoelectric-actuated mirror wth arduino
I would like to know where I can purchase a piezoelectric-actuated mirror device, such as those used in a single-colour laser pattern (not scanning) projector eg. the kinds used at music ...
2
votes
2answers
483 views
Arduino Piezo Knock Sensor Synth
I would like to create a synthesizer using 20 separate piezos for the triggers. In other words, each piezo would trigger a separate tone.
At the very least I would like to know if connecting 20 ...
0
votes
2answers
340 views
Please help identify this diode
This is a part from a (severely amateurish) Piezoelectric transducer amplifier circuit. I
am looking to identify this diode so that I can find a datasheet for it as well as possibly purchase more.
...
0
votes
3answers
423 views
Piezo as a switch to flash an led when disturbed
An LED embedded in a small translucent item (say half the size of a pack of cards) that would flash on briefly if the object was disturbed or tipped over.
I immediately responded that a piezoelectric ...
3
votes
1answer
3k views
Driving piezo buzzer from MCU pin
Good day!
I'm looking for the right circuit to connect my piezo buzzer to MCU (STM8S in my case). I don't have a partnumber\datasheet for my particular buzzer, but I've found a number of similar ...
4
votes
2answers
1k views
What's the function of the diode in this driver connected to a piezo buzzer?
I can't remember the source of this image, but I found a similar image in an Ekulit catalog. One recommended circuit shows just a resistor in series with the piezo buzzer. But this one adds a diode. ...
2
votes
1answer
951 views
Arduino analog signal read problem?
Why do I get analog reading to the non connected ports, by taping the piezo in channel 1 ?
The piezo element is only connected to Channel 1 (Arduino A[0] port).
The channels Ch 1 – Ch 6 are connected ...
1
vote
2answers
2k views
What's the cheapest way to detect vibration with Arduino?
What's the cheapest way to detect vibration with Arduino?
What's the vibration sensor that I need?
I want to detect PING PONG NET vibration and light on led if touched.
4
votes
2answers
1k views
Amplifying sound from a microphone
I have a small piezoelectric ultrasonic microphone (receiving signals of around 40 kHz). But the voltages it generates are too small to be read by my micro-controller's ADC. So I want to amplify the ...
0
votes
1answer
237 views
Small Piezo Buzzers
I am looking to get my hands on some Pizeo Buzzers that are as small as possible. So far I have found 10mm round, which is good, but I was wondering if anyone knew of ones that are smaller still?
I ...
3
votes
5answers
209 views
Sense vibrations in audible range
I am interested in making a small circuit that could sense the vibrational frequency of the object that it is attached to. The resonant frequencies would be in the audible range (likely 5kHz to 10kHz) ...
6
votes
1answer
4k views
Simple Electric Shock Device
Can anyone tell me how to make a simple electric shocking device (like a electric pen or hand buzzer style). I've seen people use piezoelectric elements from lighters (is that correct?) but I would ...
5
votes
2answers
543 views
Maximum power out of a piezo?
How do you extract the maximum amount of energy from a piezoelectric element? (For energy harvesting purposes.)
The maximum power theorem would seem to say that you need to load it with a ...
