Pablo Perez Garcia (@pablopg)

My name is Pablo and I am an Embedded / Firmware Engineer and Assistant Professor at the University of Seville. Professionally, I can help with the design and develop low power electronic devices. My skills include PCB design KiCAD, analog and digital electronics, firmware development and I'm fluent in C/C++. I have a lot of experience with ARM Microcontrollers (STM32, TI, Nordic), and Bluetooth wireless communications.

Quaternions and the spatial rotations in motion enabled wearable devices. Exploiting the potential of smart IMUs attitude estimation.

Pablo Perez Garcia ● August 10, 2023●8 comments

Have you always wondered what a quaternion is? this is your post. Attitude or spatial orientation analysis is a powerful element in wearable devices (and many other systems). Commercially available sensors can provide this information out-of-the-box without requiring complex additional implementation of sensor fusion algorithms. Since these are already on-chip solutions devices can serve as a way to explore and analyze motion in several use cases. Mathematical analysis for processing quaternion is presented along with a brief introduction to them, Although they are not really easy to visualise, a couple fairly simple examples are provided which may allow you to gain some intuition on what's the logic behind them.

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