Weekly Robotics #356

Last week, I had the pleasure of traveling to Zurich and visiting the ETH Robotic Systems Lab and the RAI Institute. Seeing state-of-the-art hardware and demonstrators and peeking behind the curtain is one thing, but talking to passionate robotic developers is always the highlight of visits like these.

In other news, I'm very happy to present an article on GPS-denied navigation for drones (first feature today), contributed by Alessandro Saviolo. Thanks, Alessandro!

This issue is brought to you by our sponsors:

Late parts don’t have to be a surprise [Sponsored]

Late parts don't have to be a surprise cover

The worst part about a missed deadline isn't the delay, it's finding out too late to adjust your build schedule. Most sourcing platforms give you a lead time estimate upfront and then go silent. On Jiga, you talk directly to the manufacturer making your parts. You get proactive updates on production status, so when timelines shift, you know before your integration timeline is at risk, not after your team is already waiting on hardware.


Rethinking Drone Autonomy in GPS-Denied Environments

Rethinking Drone Autonomy in GPS-Denied Environments cover

As promised in the intro, HUNT is a drone autonomy framework for GPS-denied, unstructured environments that replaces persistent global localization with instantaneous relative frames rebuilt from directly observable onboard signals such as inertial attitude, barometric altitude, visual motion cues, and target geometry. Make sure to check out the featured videos!


MIGHTY: Hermite Spline-based Efficient Trajectory Planning

MIGHTY: Hermite Spline-based Efficient Trajectory Planning cover

MIGHTY is a “Hermite spline-based planner that performs spatiotemporal optimization while fully leveraging the continuous search space of a spline”. The result: multirotors capable of highly agile flight with reduced travel time and computation requirements compared to the state-of-the-art solutions. To learn more about this project, check out the project repository or the ArXiv preprint.


How NASA Built Artemis II’s Fault-Tolerant Computer

How NASA Built Artemis II’s Fault-Tolerant Computer cover

If you enjoyed following the Artemis II story, you will likely enjoy this write-up on the design of a fault-tolerant computer for this spacecraft. It’s the first time I’ve come across a “fail silent” architecture, where if any of the redundant systems have an issue, they remain silent, and we always take the available output. Very interesting design decisions all around!


FusionCore

FusionCore cover

FusionCore is an open-source ROS 2 UKF-based sensor-fusion SDK that natively supports 3D, GNSS, IMUs, wheel encoders, and more! I really like the feature list and am looking forward to testing it out!


What I learned from making my own drone (Part I)

What I learned from making my own drone (Part I) cover

Nickolai Belakovski wrote a fantastic piece on lessons learned from building his first drone. If you are no stranger to drones, you will probably nod at some of the problems with IMUs, DShot, and rolling your own PID implementation. All in all, it’s a solid series of lessons learned!


LS3 Boston Dynamics Mini Resin Printing

LS3 Boston Dynamics Mini Resin Printing : r/robotics cover

Remember the AlphaDog from Boston Dynamics? A Reddit user is building a tiny replica that will host moving parts. I have to say I really like how it’s coming together.


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issue 355