What is an IMU and how to choose one
In this section, we’ll look at the components of an IMU and what criteria we used to choose the one used in this robot.
Components of an IMU
An IMU is a module that can measure movement. It uses multiple sensors to achieve this. In this section, we’ll briefly look at each sensor and how they contribute to the whole measurement.
These sensors are made using the Micro-Electro-Mechanical-Systems (MEMS) process. They have tiny moving parts embedded into the chips. We can model them mechanically to understand them. These parts sense the movement of parts through their magnetic fields and amplify tiny signals. Let’s look at the components.
The thermometer
The mechanical components of an IMU will change size, depending on their temperature. These tiny changes may be enough to change the signals so that the IMU controller can use a temperature measurement to compensate for this.
The accelerometer
An accelerometer...
