Karl St-Arnaud

Sensor integration specialist

I specialize in sensor integration, working across hardware and software to develop applications that convert the analog world into measurable digital data. Motivated by real-world challenges, I am passionate about developing practical solutions and guided by a strong sense of curiosity.

About me

I graduated from Polytechnique Montreal in 2015 with a degree in engineering physics. I have ten years of experience as a sensor integration specialist. Concretely, I help sensors translate the analog world into digital information that people can interpret.

I did my master’s in biomedical engineering using hyperspectral imaging to depict the molecular signature of tissue using scientific cameras, lasers, and spectroscopy. I developed a good research background during those years by contributing to peer-reviewed papers.

I have worked in the autonomous driving industry for seven years, integrating sensor hardware and software on several vehicles. My primary role was to provide the perception team with reliable sensor data aggregation (camera, lidar, radar, GNSS, IMU). I also work closely with image signal processing (ISP), which converts raw images into RGB images for image quality and computer vision applications.

Since last year, I have been working at Rtings.com. My main focus has been on developing new tests to better evaluate the motion and image quality of the displays.

In my free time, I love cycling and exploring the world on my bike; I have visited seven countries so far. I ride five bikes regularly and maintain them myself in my workshop. I also like developing innovative applications, reading, and vulgarizing scientific subjects through small articles. Other interests include reading, cats (I have three), coffee, and music.

Latest projects

In my free time, I love developing innovative applications and reading and vulgarizing scientific subjects through small articles.

Road quality assessment sensor

Road quality assessment using a simple IMU device available on most phones

Bike computer altitude analysis

The altitude monitor of bike computers is often very variable. This article explains in detail why.

Hydroflask adapter for Sodastream

Trying to connect my Hydro Flask directly to my SodaStream, I designed an adapter.

Rolling back in time

An article to demonstrate the timing behavior of most of today’s cameras.