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ESP32 + INMP441: Frequency response measurement fails despite chirp sweep playback from Python
I'm trying to measure the frequency response of an INMP441 microphone using an ESP32 and a Python script. The ESP32 captures 6000 samples via I2S and sends them over serial. I play a 62.5 ms ...
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1
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ESP32 DFRobot I2S MEMS Microphone output
I have a DOIT ESP32-DEVKIT and a DFRobot I2S MEMS Microphone.
When the microphone and the ESP32 are connected the Serial Plotter should have an output something along the lines of the image below:
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2
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1k
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How to calculate rotation matrix for an accelerometer using only basic algebraic operations
There is a C function that gets the acceleration values of x,y,z of an accelerometer sensor (MEMS IMU) as input, and calculates the rotation matrix in a way that the z axis is aligned with the gravity....
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1
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Is there a nice way, in Python, to measure the number of memory accesses, or mems, used by a function?
When people ask about memory, they're often asking how much memory is being used, but this is not what I mean.
Rather, I'm reading through Donald Knuth's The Art of Computer Programming, and ...
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914
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Tilt sensing with Lis3dh and stm32
I am using the LIS3DH sensor with STM32F4 and I want to calculate the tilt angle.
I am aware that I am supposed to calculate the angles(Yaw-Pitch-Roll(ψ-θ-φ)) using some formulas but I don't know how ...
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248
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What should be the reason for not getting output from the MOTION GC library?
I'm working on the "STEVAL-MKI182V2" mounted on the STEVAL-MKI109V3 development board. Initially, I downloaded the Standard c Drivers from the following link https://github.com/...
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0
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275
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STM32F107 read mems mic MP34DT05-A i2s
I am working on STM32F107 to read MP34DT05-A mems mic on I2S. I have tried any configuration setting with pdm2pcm.c and i2s.c but nothing shows the expected result.
The expected result is positive int ...
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1
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Parsing LSM6DSL raw values
I'm trying to parse the values given from a device with a LSM6DSL chip (gyroscopic and acc.) and I'm having a hard time parsing the data properly for positioning and angle.
From the vendor I've ...
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172
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Comsol resistive heating coil simulation
I have a resistive coil from a MEMS. The only data I have to simulate the resistive heating is the input voltage which I can use between 0.5V to 20V and the material of the coil(GOLD). I am getting ...
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152
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Compress data from MEMS accelerometer and transfer it with NBIoT
I have raw hex data from MEMS accelerometer with sampling rate of 1 sample per millisecond for a measurement duration of 2.5 seconds for each trace.The data contains first 12 bits for timestamp and ...
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1
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395
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How to get images at 60 fps and imu data at 500hz at the same time with zedmini camera?
We know that IMU sampling rate is much higher than image taken from the sensor (FPS), so can I get images at 60FPS and IMU data at 500hz at the same time?
Is there an easy way? Or maybe I need to ...
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1
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MPU9250 IMU Accelerometer and Gyro Data Format
From the data sheet, it can be found that each of the six output channels of MPU9250 has 2 bytes and 16 bits resolution. I was wondering about the 16 bits binary values, are they in the format of two'...