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1,068,762 views   Jul 1, 2021

🦉 DIY Hydrogen/Oxygen Generators From Grocery Store Items (HHO Fuel Cells & Split Cell Electrolysis)

NightHawkInLight 1.81M subscribers

In this video we look at several electrolysis designs and their function. Check out this video's sponsor, MEL Physics! Use the promo code "nighthawk" for 50% your first set of experiments: https://melscience.com/s3p/

Most DC power supplies will work adequately well for electrolysis, the most common of which is a 12v battery charger or a car battery itself. For more control it is best to use an adjustable power supply. Here is an affiliate link where you can purchase a similar 30v 10a power supply as I use in this video: https://ebay.us/2DY3Y0

The last design shown in this video for a combined output HHO fuel cell I first stumbled on here: https://youtu.be/bIVbbqRkudw

After filming this video I realized that the plastic bottles I used for several of my designs had become quite brittle, and found research showing that hydroxide solutions are known to be quite damaging to plastics: https://www.sciencedirect.com/topics/...

I did not notice increased brittleness in the clear plastic container of my final split electrolysis design, but the plastic is much thicker and so it may take longer to show weakness. A suitable precaution to give the cell the longest life may be to empty it of electrolyte while in storage. A stainless steel or glass container should be able to store the hydroxide solution indefinitely.

A special thanks to my top Patrons: LVE, Enzo Breda Lee, Jon Hartmann, TheBackyardScientist & Eugene Pakhomov! If you enjoy these videos please consider supporting my efforts to continually improve them: https://www.patreon.com/NightHawkProj...

Thanks for watching!
-Ben 👨‍🔬
Oct 17, 2021

Renewable Baseload Power from a single desert location. Enough for 7 million homes!

Just Have a Think 346K subscribers

Baseload renewable power is the holy grail of our sustainable energy future and, according to some naysayers, an impossible dream. One UK company begs to differ, and they've just announced a £16 billion project that will be generating 3.6GW of solar, wind and battery capacity in South Morocco for an average of 20 hours a day, transmitted directly into the UK via subsea HVDC cables, by 2027. Could this be the most ambitious renewable energy project yet?

October 19, 2021 By Jennifer Sensiba

Dozens Of Original Tesla Roadsters Lost In Gruber Motors Fire


Over the weekend, tragedy struck again at Gruber Motors in Arizona. An electrical failure started a fire in their main service building, and managed to ignite a car’s lithium batteries before the fire department could arrive and put the blaze out, making it very difficult to save anything in the building. Sadly, there were at least 25 original Tesla Roadsters in the building, and they were totally destroyed.

... ...

Why Were There So Many Roadsters In One Place?

If you’re unfamiliar with Gruber Motors, you might wonder why there were so many original Tesla Roadsters in one place. The answer is that they’re one of the few facilities that can work on them. Yes, you can still get some limited work done at a Tesla service center, but if a major component fails, you’re in for replacing the entire component (like a battery pack). This can make a relatively minor problem cost tens of thousands of dollars to resolve , but Gruber’s team can break down something like a battery pack and repair it for a fraction of what Tesla would charge.

For some components, replacement modules simply don’t exist and haven’t been made for over a decade. In those cases, even Tesla can’t help the owner out. This is where Gruber Motors really shines, as it can repair and refurbish expensive components, making a repair possible at all.

As Teslas age, more and more of them end up at Gruber Motors for repair. You can learn more about the problems owners face with aging electric vehicles and the process of repairing them in this video:

--- ---
Future EV Shops Need To Learn From This

Full article:

"But be doers of the word, and not hearers only, deceiving yourselves. For if anyone is a hearer of the word and not a doer, he is like a man who looks intently at his natural face in a mirror. For he looks at himself and goes away and at once forgets what he was like. But the one who looks into the perfect law, the law of liberty, and perseveres, being no hearer who forgets but a doer who acts, he will be blessed in his doing."  James 1:22-25 English Standard Version

October 16, 2021 By Zachary Shahan

Tesla Model 3 SR+ Two Years Of Maintenance Costs (Tires, Locked Trunk, 12V Battery …)

We’ve had our Tesla Model 3 SR+ for a bit more than 2 years now. I recently had a service visit for a couple of things, but rather than write only about them, I figured it would be useful for people to see our full service history with the car. I’m going to go backward from most recent to least recent, since the recent stuff is more interesting. Here we go….

Opening Trunk :P

A few months ago, I went to open the trunk and it wouldn’t open. After a day of not getting it to open, and needing to get some tennis equipment out of it for my daughters, I realized I might be able to go through the back seat and open it from the inside. Indeed, that worked, since there’s a manual latch in the trunk door. The trunk then worked, so I figured it was just a temporary glitch.

At around the same time, the backup camera didn’t work a few times. But then it came back and worked like normal.

We were going to Europe for a month and a half to spend time with my wife’s family, so I didn’t want to mess with service appointments at the time, and everything seemed to be back to normal.

After we returned, though, within a couple of days, the trunk wouldn’t open again. And the camera acted up a few times just like before. I opened the trunk manually several times, but it wouldn’t start working correctly again, so I knew it needed service. I scheduled a mobile service visit and a few days later the ranger came and checked it out. He hadn’t seen this problem before but talked to a colleague who had seen it a few times in Texas. Here’s what it turned out the issue was:

There’s a wiring harness in the trunk door that carries wires from various things back there to the front (including from the cameras and trunk latch). If a wire or two gets damaged, things stop working. In such a case, the whole harness has to be replaced. Here’s a short video of me just showing that the trunk won’t open trying from either the touchscreen or the trunk itself:

This is not a mobile service task, and Tesla had to order a part before providing the service. Eventually, though, 3 weeks after I put in the initial service request, I had an appointment at the local Tesla service center and brought the car in for the harness to be replaced. It was all done under warranty, so at no cost to me, aside from the time.

Replacing Tires

New tires at nearly 17,000 miles and two years of ownership. Photo by Zach Shahan/CleanTechnica.

When the mobile service technician visited to look at the trunk, and also at a previous service visit when he came to replace the 12V battery (see below), he checked the tire treads and some other things and told me the tread level was low and should be replaced soon. Not wanting to bother with taking the car to a separate place for tires, and trusting that Tesla would give me a good deal since Tesla’s aim is to not make a profit on service and to treat customers well, I decided to just go with Tesla’s recommendations and not stress. I have since been told by another Tesla owner to just buy tires through Tire Kingdom and that I paid way too much. Next time I will shop around a bit more and have more faith in local tire shops….

In any case, after two years and fewer than 17,000 miles, I replaced all four tires at a cost of almost $1,700 ($1,671.64 👀 to be exact). Yikes. More than I expected.

It seems I’m on the worse end of tire wear and tear. I was told that the normal range is between 15,000 and 25,000 miles. I hardly ever drive on the Interstate and I drive quite calmly (see my Safety Score below), so I was surprised to be on the low end of this window. Though, I have been known to enjoy a good blast-off at almost every chance (red light) that I get. I’ll also admit that I’m almost 40 but do still often feel like a kid (when I’m not thinking about my bum knee or growing belly). Perhaps I am having too much fun. I have committed to trying to be a bit more calm at traffic lights. Sort of.

My Tesla Safety Score a week ago.

12V Battery Replacement

As I reported a few months ago, I had to have my 12V battery replaced just after 15,000 miles and nearly two years of ownership. The cost was $0 since it’s included under warranty. You can read more about all of that here.

Tesla Model 3 SR+ about to get 12V battery replaced. Photo by Zach Shahan/CleanTechnica.

Tire Rotation

After a few months more than one year of ownership, and 8 months before replacing the tires, I had the tires rotated by Tesla. That came at a cost of $35.00.

Cabin Air Filter Replacements

At the same time as the above-mentioned tire rotation, I had the cabin air filter replaced. The specific description from Tesla on the invoice is “A/C Odor Removal (Using Evaporator Foam Cleaner, Replace Cabin Filters).” The cost was $50.50 for parts and $39.75 for labor, so $90.25 in total.

That was the second time I had the cabin air filter replaced. The first time was a year before, and just a few months after buying the car. We bought the car right around the time Tesla implemented a software update to better lengthen the life of the air filter since in humid climates (like Florida), it was getting stinky too quickly. As a result of all of that, Tesla replace the filter as a complimentary service (no charge).

In Summary

So, in summary (and going from oldest to newest this time), in two years of ownership and 17,000 miles (actually, two years, two months, and 18,728 miles as I write this), I’ve had the air filter replaced twice ($0 goodwill service the first time, $90.25 the second), the tires rotated once ($35), the 12V battery replaced once ($0 under warranty), and all 4 tires replaced once ($1671.64). That comes to a total cost of $1796.89.

During the various service visits above, I also had them check out a few things that ended up being nothing or unidentifiable matters that went away (truly little things). Additionally, they refilled my windshield wiper fluid during service center visits and I’m yet to buy any myself.

I also spent $0 charging for almost two years of ownership, but a few months ago moved into a home with a garage and have spent some amount of money (I haven’t kept track) charging at home.

The focus of this article was Tesla service visits and costs. For more of a “long-term review,” see the full archives for that and see this article in particular: “16 Months With Tesla Model 3 Standard Range Plus (Video Summary).”


Agelbert NOTE: Check out the comments. They are quite informative. 
287,460 views Oct 10, 2021

Lithium Sulfur batteries: SOLVED! Two new tech breakthroughs in the same week!

Just Have a Think 344K subscribers

Lithium Sulphur (or Sulfur) ⚡ batteries have been on the 'hopeful technology' list for over a decade now. Potentially they have 5 times the energy density of existing lithium-ion batteries. The trouble is, previous prototypes had terribly short cycle lives, so they were pretty much useless. Now, after ten years of waiting, suddenly two different solutions have been announced within a week of each other, both claiming to solve the problem. So, which one will come out on top?

Video Transcripts available at our website

Help support this channels independence at
Monsoon II (4K)

845,953 views Oct 5, 2015

Mike Olbinski 66.4K subscribers

Become a Patron: https://www.patreon.com/mikeolbinski

Blu-Ray Disc available here: http://www.mikeolbinski.com/shop/
Song by Kerry Muzzy: "Palladio Rebuilt" (on iTunes: http://bit.ly/pall_MO)

I've been chasing the monsoon in Arizona for about 6-7 years now. This summer was different though. Back in late July, I was wondering why it felt like I was out chasing more than ever before. And then I remembered. I had a job last summer. This year I didn't. I went full-time photography in November of 2014 and haven't looked back.

I was free to roam and had virtually no limitations.  I even had multiple chases where I never actually wend to bed, but instead chased all night. I took the kids to New Mexico at one point early in the season.

Last year I counted roughly 31 total days that I chased a storm during the monsoon. This summer: 48. Yikes.

17,000 miles driven, which was about 3,000 more than last year. Perhaps the biggest difference this year was shooting nearly 60,000 more time-lapse frames than I did in 2014. 105,000 total. And what sticks out to me even more than any of the other numbers above, is that only 55,000 of those 105,000 frames made it into Monsoon II.

What that means is I was able to stuff this new film with only of the best of the best. We missed out on some of the huge dust storms like I've captured in years past, but overall, I think this represents some of the best weather I've ever photographed in Arizona. There are stunning shelf clouds, gorgeous rain shafts, lots of blowing dust, tons of lightning, and even multiple mini-supercells/mesocyclones. The brief meso over Cottonwood at the 3:38 mark is one of my all-time favorites. ... ...

mikemather5 4 years ago

I'm a weather forecaster from the high deserts of California. I've been here since 1980. This new 4K format used in these videos is amazing to watch. You're seeing beautiful examples of orographic lifting over the mountains, cyclonic turning, downbursts from the core of a thunderstorm, cloud to cloud, in cloud, and cloud to ground lightning. I watch it over and over again and there's always something that I didn't see before. Thank you Mike for the beautiful work!!!
Sep 4, 2021

🐆 Ganesh & 🐅 Vithal's Heartwarming Bond

Wildlife SOS 51.9K subscribers

Rescued leopards Vithal (R) and Ganesh (L) are a rare example of a deep bond between two adult males.

Ganesh suffered a major eye injury when he was trapped in a conflict situation and has cataract on the left eye. On the other hand, Vithal had lost his right hind paw to a deadly snare trap.

As life in the wild was not feasible for either of them, Ganesh and Vithal were given a permanent home at the #ManikdohLeopardRescueCentre in Junnar, Maharashtra.

Today, they perform an important role as conservation ambassadors to sensitize people about the threats that leopards face in India.

October 13, 2021 By Mike Schuler

AIS screenshot as of 3:38 PM PT, Sunday, October 3, 2021. Image courtesy MarineTraffic.com

"So our question to Rep. Steel is this: where should they all go?"

New Inventions / TRULY AFFORDABLE self-navigating cane for visually impaired
« Last post by AGelbert on October 14, 2021, 04:27:24 pm »

Tibi Puiu by Tibi Puiu  October 14, 2021

Scientists devise self-navigating cane for visually impaired

It uses the same tech as self-driving cars.


The augmented cane features a number of sensors and is largely made from off-the-shelf parts. The navigation software is based on open-source code. In fact, anyone can assemble their own version of this augmented cane as the study comes with a list of parts and soldering instructions, perhaps for a friend or relative who would find one useful. ... ...

This isn’t the first smart walking cane, but it’s probably the most versatile and affordable on the market right now. According to the study’s authors, other canes with similar functionalities can weigh up to 50 pounds (22 kg) and cost at least $6,000 👎. In contrast, the Stanford design only weighs 3 pounds (1.3 kg) and its parts cost $400.

The parts include a LIDAR sensor, a 3D laser scanning technology originally developed in the early 1960s for submarine detection from an aircraft. It works by generating a laser pulse train that hits various surfaces and obstacles in its way. By calculating the time it takes for the laser pulse to reflect back to its source, the cane provides real-time information about various stationary or moving obstacles directly in front of it.

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