@hans I did look at the library. It was a complete disaster.
First, the library is 8 years old. I couldn't even get it to install in the arduino ide. I had to install it manually.
Then the library is not compatible with the ESP32. I tried to get the simple sketch to compile and after hours, gave up. The library may work fine on an uno, nano or whatever. It will not compile for an esp32 or the heltec board
I did find an AXL345 accelerometer board that used SPI and I2C. I ordered one yesterday. I am going to try this in SPI mode
I hope the new accelerator works better. As for the model you have right now; how bad are the numbers bouncing? Since I have no idea about the values, maybe you can calm them down a little with one or the other math trick? I'm just spitballing here obviously ... maybe make it a float, divide by 10, trunc the number, and multiple by 10 again (a trick I used in other projects, so this may not be relevant for your project).