Roni

Try a high value across the piezo to remove its DC offset (which is ill-defined given piezo's are basically ceramic capacitors).

Hey, did your project work?

I tried a couple of experiments; I think that indeed I did damage the Teensy internal ADC. I switched temporarily to an Arduino (until I receive the new teensy), however I am having a small problem. I used to have the piezo taped to a piece...

The block diagram above shows an ADC chip by TI that has 4x internal ADCs which therefore allows it to sample all channels at the same time, eliminating and phase/time shift between samples. This may be beyond what you are trying to do, I'm not...

Hi Roni, we will need a bit more information to be able to assist you. Directly connecting piezo sensors to the Teensy ADC inputs is not a great idea since Piezo devices can produce quite high voltages without suitable clamping/limiting...

You can control the output voltage of a piezo sensor with a parallel resistor since they are current sources, not voltage sources, no need for a divider. So divide the power supply 1:1 to one wire of the sensor and connect the other to the...

Thanks for all of this info and for the video.

Thank you for your input, it is really helpful. My setup is simple, it is made of a voltage divisor and the piezo that is hooked on the 3.1v pin, so it should be shifted by +3.1V and divided by 3. My setup (Though I am using a Teensy 4.1 and I...

MY bad, #include <ADC.h> const int readpin1 = A14; // First analog input pin const int readpin2 = A16; // Second analog input pin ADC *adc = new ADC(); // ADC object #define SAMPRATE 200000 // Sampling rate 200 000 Hz #define AVERAGING 1...

Hi, I am also new to teensy and microcontrollers. I am working on a uni project that requires a high synchronous sampling across two analog inputs, I am wondering if you did manage to do your project or not. If so, could you please give me some...

Hello everyone, I am still new to Teesy. I am working on an acoustic project on Teensy 4.1, this project requires two piezo sensors and a very high sampling rate. I want to continuously monitor the piezo sensors and write the values to the...