hello everyone!
I'm working with an IMU LSM6DS3 and I need to get the accelerometer and gyroscope data with a frequency of 1KHz (from the datasheet I saw that it is 1666Hz, is that OK).
What baud rate value should I set to see the data at 1Khz (1.6Khz) on the serial monitor?
thanks to all!
A MEMS sensor is not really suitable for impact measurements.
A drone might work with this sensor.
What do you want to measure ?
Which Arduino board are you going to use ?
Do you have a library that uses SPI ?
The speed of the Serial Monitor depends on the Arduino board and how fast the computer is.
Suppose you need 2000 samples per second and the acceleration and gyro are 16 bits.
Then you need 2000 * 6 * 2 = 24k bytes = 250kbaud.
That is possible with a faster board.
I think that the Serial Monitor off the Arduino IDE can keep up with that, but you can always use any other serial terminal program.
Some processors have a USB device on the chip. That is fast, because the baudrate is not really used.
I use an arduino uno wifi r2 board.
i am using the library 'Arduino_LSM6DS3.h' to get the accelerometer and gyroscope measurements
Arduino UNO WiFi Rev.2: https://store.arduino.cc/products/arduino-uno-wifi-rev2
It has a ATmega4809 at 16MHz using the Arduino megaavr software branch.
When also doing calculations, then about 100 samples per second is a reasonable number for that board. I don't know if you can stretch it up to 1000 samples per second.
The LSM6DS3 is on the board and Arduino provides a library: https://github.com/arduino-libraries/Arduino_LSM6DS3.
The library can do both I2C and SPI, but for the UNO WiFi Rev.2 board the SPI bus is used, that is good. It is not slowed down by the I2C bus.
My suggestion: Try 250000 for the baudrate and test if it works.
What is your project ? When someone does not want to say that, then it might be a XY-problem: https://xyproblem.info/
I have to read data from the accelerometer and gyroscope at a frequency of 1KHz (1 millisecond).....
ok, thank you very much... so by setting the sample rate right and setting the baud rate to 250000, I should be able to see the individual values printed out every millisecond ?
I'm just using that library... to change the sample rate, do you recommend editing the .cpp file?
I saw that in that file there are two functions where you set the sample rate of the accelerometer and gyroscope
The sensor has a sample rate and a low-pass filter, I did not read the datasheet well enough to understand it. Yes, you have to change the library, since it is now set for a default of 104 samples per second.
You can copy the *.h and *.cpp files into your project. But give them other names and adapt the includes in the sketch and in the other files. Use double quotes for a local file. Each file will show as a tab in the Arduino IDE.
#include "myLocalFile.h"
#include <libraryFile.h>
then i put in the same folder as the .ino file, the .h and .cpp files i modified (i changed the sample rate value to the gyroscope and accelerometer). but nothing changes
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