OpenWave

This post will examine the steps currently being used to go from vertical acceleration data to vertical displacement and the issues involved. Step 1: Getting acceleration data The first step is to setup the rotating arm with the IMU attached, rotate it for a fixed amount of time, say 60 seconds and capture the raw…

Some observations on vertical displacement: Getting displacement data from an acceleration signal is possible by double integration. This double integration causes issues as any error present in the original acceleration signal will accumulate at an exponential rate in the displacement signal. A python script is being used to perform analysis on the Z-axis (vertical axis)…

The breadboard circuit has been attached attached to the end of a rotating arm and it’s streaming data back to a PC. So just as a recap, the breadboard contains a teensy 3.6, a BNO55 9DOF IMU sensor and a serial bluetooth adapter. At the moment the only values  streaming to the computer are linear…

Some decent progress has been made since the last blog post. See the image of the breadboard below which shows the current state of the electronics: The small blue pcb with the four mounting holes is the BNO55 breakout board from adafruit. The vertical standing pcb is a serial bluetooth adapter and the green pcb…