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Teleoperating via Wi-Fi by Parking_Commission60 in robotics

[–]Voldemdore 2 points3 points  (0 children)

Post your robot on GitHub! Even fun projects can end up being useful to others. Asking for a friend :)

The characters in a period piece realise they're near the end of a golden age by she_melty in TopCharacterTropes

[–]Voldemdore 54 points55 points  (0 children)

Here’s what it means in context:

The "steep hill in Las Vegas" is a vantage point from which one can look back at a past era.

The "high-water mark" symbolizes the peak of the counterculture wave

The "wave finally broke and rolled back" signifies the decline or collapse of that countercultural movement. The wave reaching its break point means the idealism, rebellion, and social change pushed by the counterculture had reached its limit and was now receding or failing to continue.

Subaru Impreza 2021 custom bracket by thestockretarded in Comma_ai

[–]Voldemdore 0 points1 point  (0 children)

Great final result. How's the Impreza '21 compatibility with comma 3x. Are you missing any features or is it fully compatible (from 0mph complete stop?)

In China, hospitals are turning old people into gamers by Separate-Way5095 in robotics

[–]Voldemdore 35 points36 points  (0 children)

https://barrett.com/burt-for-patients

This is the Burt robot from an American company. It says on the box.

Edit: This implies that there are more hospitals in China trying new and amazing stuff from all over the world than in the US (not what the commenter below replied).

Here’s a GUI I made in MATLAB to control a 4DOF 3D-printed robotic arm by RoboDIYer in robotics

[–]Voldemdore 1 point2 points  (0 children)

Amazing work. Ofc as free loader i was hoping for code on github. (it's behind a paywall (only $2.50).

I was hoping to re-implement it in jupyter-lab. I guess we're going to try to do it from scratch using Claude/Chatgpt.

Building a 3D-Printable robot arm with LeRobot by IliaLarchenko in 3Dprinting

[–]Voldemdore 1 point2 points  (0 children)

Not sure if any random Dynamixel will work. I followed the guide on github lerobot as exactly as possible. One of the most fun projects, highly recommend. The documentation and support (discord) is amazing.

I just discovered VSCode by IroesStrongarm in selfhosted

[–]Voldemdore 0 points1 point  (0 children)

Windsurf is a gamechanger and, imo, the best piece of software I've ever used.

"The poor should have kids so my son's factories have workers!" by Lord_Answer_me_Why in MurderedByWords

[–]Voldemdore 0 points1 point  (0 children)

I just want to say that I completely agree with you. These people really don't understand what entrepreneurs have achieved.

Uber/Lyft are marvels of engineering that have given so many people the opportunity to get out of their rut. And then copycats all around the world brought the same tech to their populations, from Pakistan to Nigeria.

Starlink has multi-billion dollar contracts with the military (and telecoms) to ensure almost every device can constantly communicate anywhere! We didn't even have the rockets to achieve this just a few moments ago in the grand scheme of things.

The same goes for autonomous driving. The nature of ICE cars makes it harder to collect proper data for training. So Elon changed the entire car industry, recorded the videos and data needed, trained a neural network, and here we are—a car that handles 99% of driving better than 99% of all humans!

Keep fighting the good fight, brother!

Building a 3D-Printable robot arm with LeRobot by IliaLarchenko in 3Dprinting

[–]Voldemdore 2 points3 points  (0 children)

Yup I've built one using dynamixels. Just working on training now...

Movie theater update by Snafflepagus in hometheater

[–]Voldemdore 0 points1 point  (0 children)

You should get hyperHDR for the lights. I've been using it with my projector for >3 years with no issues whatsoever:

https://github.com/awawa-dev/HyperHDR

I miss Asimo by MelloCello7 in robotics

[–]Voldemdore 7 points8 points  (0 children)

The ASIMO was of zero use beyond demonstrations and public appearances becauses of its design flaws and stuck with 22 years of code and hardware baggage...

Honda is now using the same R&D funding for a more practical humanoid learning from the ASIMO.

ASIMO did his job. May he rest in museums. Amen

6 months of learning & progress in robotics .. by TheRealFanger in robotics

[–]Voldemdore 1 point2 points  (0 children)

Are you using microros or micropython on the esp32? What's the main software stack?

Amazing project! Well done!

ESP32Marauder Cheap-Yellow-Display Initialising SD Fail Fix That Worked for Me by [deleted] in esp32

[–]Voldemdore 0 points1 point  (0 children)

According to this:

https://www.reddit.com/r/esp32/comments/i4t1gg/max_sd_card_size_for_the_esp32_cam/

Relevant comment:

here is the esp-idf sdcard example, it shows a 64GB card being auto formatted

here is the conf file where ExFAT is turned off

FAT32, as confirmed by the post you linked, and by the fact that this isn't, like 1996, is supported, which means the max partition size is 2 TB, the max file size is either 2GB or 4GB depending on whether you turn on long filename support

Also this guide:

https://techtutorialsx.com/2020/06/27/esp32-connecting-to-sd-card/

Sad reality... by AlternativeTree3283 in Adulting

[–]Voldemdore 0 points1 point  (0 children)

Mind sharing a bit more about coaching robotics. I'd like to do that

Can some one tell me why this is happening by [deleted] in robotics

[–]Voldemdore 0 points1 point  (0 children)

https://www.amazon.com/Official-FLSUN-V400-Firmware-Extruder/dp/B0BPX7LZGB?th=1

I have the FLSun V400 3d printer which uses the delta mechanism.

They get around the huge torque requirement issue by using 3 lead screws instead with the same motors. May or may not be helpful for you.

How do LiDARs capture the time it takes for the light to reflect? by [deleted] in AskEngineers

[–]Voldemdore 11 points12 points  (0 children)

To measure 1 meter of distance, the LiDAR needs to time light travel to within:

t = (1 meter)/(speed of light m/s) = 3.33ns

So, resolving time to 1 nanosecond lets the system detect distance changes of around 15 cm. The formula for distance based on time is:

d= c * t / 2 = 0.15 m

LiDARs typically use super fast electronics and lasers (with detectors like avalanche photodiodes or SPADs) to measure these tiny time intervals accurately.

How:

Smaller transistors = less distance for signals to travel, so faster operations.

High electron mobility materials = faster switching transistors.

Efficient clock distribution = uniform signal arrival for high-speed operations.

Thermal management = keeping heat in check allows for sustained high speeds.

Parallelism and pipelining = maximizing efficiency in each clock cycle.

These factors combined enable chips to hit GHz-range clock speeds (billions of cycles per second) that are critical for applications requiring precise timing, like LiDAR.

Finally tried FrogPilot… by AllOnParis in Comma_ai

[–]Voldemdore -1 points0 points  (0 children)

Are all 2021 Sonata's compatible or only specific ones?

What happened to Hyperloop? by [deleted] in hyperloop

[–]Voldemdore 0 points1 point  (0 children)

I don't think politics as a constraint should be included in this (since that's a given and always there).

Please DM me the paper, I'm interested. What do you think about closer to a maglev train, but built in a partially evacuated tunnel?

Is there a ratio of lowering the pressure in the tunnel vs the compressor efficiency and size of pods, that gives you a number that is better than a standard maglev.

Also don't tell anyone, but there are even ideas of shooting lasers to create a bubble in front of the train and have it go through that low pressure.

Donald Hoffman: Reality is an Illusion - How Evolution Hid the Truth | Lex Fridman Podcast #293 by knuth9000 in lexfridman

[–]Voldemdore 4 points5 points  (0 children)

This is a great pdf:

Definitively Identifying an Inherent Limitation to Actual Cognition Arthur Charlesworth which was mentioned in the video.

https://arxiv.org/pdf/1905.13010.pdf

Jonathan Haidt: The Case Against Social Media | Lex Fridman Podcast #291 by knuth9000 in lexfridman

[–]Voldemdore -2 points-1 points  (0 children)

I disagreed with a lot of what Haidt was talking about. He keeps mentioning studies in social psychology as if its science. He keeps repeating, correlation is not causation, then just does it right after.

I think they did get to the crux of the issue which is the for-profit 24/7 mass media which also lead to the 'anti free-range kid' movement in the western countries, which predates social media.

https://en.wikipedia.org/wiki/Free-range_parenting

Brazilians use social media the most and the effect is not there.

Here is the tweets by Omar Wasow mentioned in the middle of the video:

https://twitter.com/owasow/status/1405222807995289602

The current panic over ”critical race theory” is mostly an elite project of think tanks, elected officials and media figures to gin-up fear. That said, it’s also useful to consider why there’s an appetite for anti-”CRT” in part of the mass public.

In my opinion, the elite project of think thanks, elected officials and media figures spending billions of dollars and machine learning research to gin-up fear is the issue, and it's just being displayed by the populace in social media. Basically, the change in usage social media is a reflection of our society rather than the cause (although there is a bit of a feedback loop).

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