Issue with I2C communication with MPU6050

embeddedgyro / shakey-table

Repo for team 2 of the Real Time Embedded Programming 5 course at the University of Glasgow, creating an anti-quake cup holder.

GNU General Public License v3.0

0 stars 2 forks source link

Issue with I2C communication with MPU6050 #58

Closed genamag closed 5 months ago

genamag commented 5 months ago

When we test the prototype, at the equilibrium point the wheel started vibrating like crazy due to PID control, and then we started seeing errors in I2C communication between the Pi and the sensor.

Restarting the MPU fixes it, but the issue comes back during every test run

We don't know if it is a hardware or a software issue for now

genamag commented 5 months ago

the issue was the LC filter, not physical vibrations. Fast ripples in the current through the motor probably caused a lot of voltage and current spikes in the passive components, which in turn disrupted the fragile I2C communication

getting rid of the LC filter in the circuit completely eliminated the issue