@rctestflight if you hold up a spoon & balance the flat part on your middle finger then press down with your thumb you create a pivot point that presses up one side of the spoon's scoop part up at a 45 degree angle.
Allowing for a new ball joint as well to be there that allows for not just variable pitch but rotation down & up.
Just so it's easier to imagine from the earlier comments.
Edit 1
It's a pressing down in the side of the flat part that pitches up & rotates the spoon up on one side. Basically a rotation & pivot together action based on geometry.
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I'm only at year 19.48 so far but, this is super cool. A different type of gear might help you here, might have been thought of by you later in the video, you later in the future after this video was released, but a rotating shaft that attaches to the body of your drone is going to be much better. You can split 4 from a central counter rotating pancake (axial based) motor system to run as a double hyphoid gear system to an ring based cvt system that then has the shafts go to the blades, if you use a sliding ball joint you can have the propellers be at a 45 degree angle instead of a straight 90 degree, this allows for pitch down & up with your variable pitch system going into & out of your hollow shaft.
The shafts have to have linear motors added in, like plated or just added to the bearing holding structures but it should work much nicer that way.
it just needs vertical height for the 45 degree angle to clear rotating shafts.
Or you can use a cvt bearing that toyota's have in their wheels that allow for them to move up & down for their off-roading wheel hubs. Donut media briefly talked about them in a video going over upgrades the guy that used to be a car salesman, has a beard, & got a dog on of his off-roading adventures where he helped Justin go across country in his Subaru. Anyways, he upgraded his truck & talked about it in a short clip for the cvt bearings they use that are closed bearings.
Funnily enough, that are resin 3d printable, or bought as super light weight ceramic. Hollow resin 3d printed that is plated then boron nitride electroless plated will work for longer & be lighter, just saying though, mostly through the amount of tiny micron sized infill areas for the bearing of the sphere you can make it have.
Anyways, not a big deal, cost to on hand & modeling, its all a thing. Post processing adds time & cost, but boron nitrides & silicon carbides are really cool electroless plate things that really can upgrade 3d prints.
The parasitic weight & costs of aero drag is a drag, pun intended, in these designs. So I usually go with ring based movement in a duct that takes advantage of a larger higher angle of attack pitch front blade that uses the duct area for the wing tips to spin the blades & then use a smaller one that counter rotates below, with stators in-between. That allow for a radial & axial based motor system to work together in these systems to provide the thrust then the radial motor can be around an shaft that allows for the variable pitch inside for the bottom & top blades.
edit 1 (2nd comment)
it really does sound soooo much better than drones normally do, stupidly cool. I hate how drones normally sound both motor & super bright blade screech & that's coming from a hard of hearing person. I would love to see drones flying around if they sounded like this & could use some buoyancy to help them out, that's why my other comment talks about those motors. I designed them to work in conjunction with buoyant designs to better improve drones & have them fly with cool sounds & full frame cameras that can be large format with all the batteries neatly turned into axels & shafts that are plated & formed with the right material to have the casing become the motors & or connectors. Light weight, hardcore light weight! Vacuums are my jam dude! Screw h2 & expensive helium, vacuums! Pull it apart & make it work with tough materials that are light weight & reenforced with battery/capacitors built in. Have a great carbon nano onion ball 3d print idea, need a microwave kiln & fish scales, have neither, can't buy a ton of fish scales (like actual ton, no idea where to put them either, can't get them from any local store either, sucks).
Anyways, I could use that concept with this concept from the previous comment & my internal structure, like those spikey balls that when you open them up they get bigger made of plastic things, you basically start it off in a vacuum pot then yank the thing apart & have latching & fluid be a part of the thing & it holds it in place, multiple sections to increase actual strength to the vacuum parts, thing is air needs to go into the inner areas to help with air multiplication effects (Bernoulli & venturi effects) to the ducted fans that gain piezoelectric increased volt & amp generation to the motors. The skin is made of hollow plated quarts with carbon fiber that's in-between the quartz, it allows for tracers to be there & electrically send the piezoelectric signal to circuits going on to my designs.
There is a gimble aero-spike bell end hybrid rear section to those ducted motors that have the air get added into the throat point of the Deval nozzle shape. The hollow aero spike & the hollow stators (forward swept angle & the rear tail section are rear swept) allow for the air to be captured and added in with extra vortex inducers that cause leading air plug problems to be sucked into the draft lower pressure zone of these while mixing together further down. Its a design iteration on a comment I left for integza for one of his rocket engine designs.
My designs, in general, have a lot of tiny little tricks in them for fluid & thermodynamic efficiency & weight efficiency increases. They can't be half-assed or they don't work as intended & you get dumb stupids saying they tried & it didn't work. Real actual knowledge & computational math (computer or brain) has to be done to tune for their use cases, speeds, altitudes, & material placements, smoothness of surfaces, etcs. Stupids aren't likely to get a better result using some of these methods. But fewer methods, placed correctly, will get them a better result, in some cases. If done correctly, roughly speaking. Still have to credit me to use them.
powered by the sun and sheer force of will, using a little autopilot and GPS module, this rover was instructed to follow a short 8-shaped path in a field. The thing has a 3D printed drivetrain. To make it more efficient, it drives very slowly using small motors with a high reduction ratio. No fancy suspension; just one motor per wheel.
This rover follows a set of GPS waypoints. It has solar panels and a charge controller. At night, it drives until the battery voltage drops too low, and then waits until the morning.
why was this made. why is this soo good. There's a hecking STORY here. You get to watch the rover drive through time as parts wear down and the sun moves along the ecliptic. Lets go through it!
Its first runs were without panels. The previous version had a controller tuned much hotter, and with its improved gearboxes, it needed to be toned down:
That stick in the back holds the GPS module. its back there to try to reduce interference with other parts of the rover (motors etc.). Without it, it doesn't know where it is!
Note that the gears are not fully enclosed: this orange cover allows grass to get in. that's not ideal!!
But it continued! the outline of its periodic 8-shaped journey around the field began to make itself visible.
It also began to accumulate slugs whenever it stopped to charge. if any of them were unlucky enough to lie on the gear teeth when the battery level of the rover rose to drivable levels, they became lubrication. poor things!
Daniel left the rover to its own devices for some time. here's an image of it in the center of the field, showing the pattern it formed in the grass:
On the 28th, it had its first failure:
The back wheel had stopped spinning! and we get to take a look inside the gearboxes.
So much debris had accumulated in the gearboxes that mycelium started growing in them. wild!!
The rover stopped driving because one of its gears had fused itself to the walls of its gearbox.
With upgraded gears and gearbox covers, the rover was placed back into the field. Each wheel hub eventually broke and were replaced by versions with more material around the shaft.
When the days were sunny and clear, the rover never stopped driving. It kept its batteries full and continued its march around the field. It kept moving as long as it could!
When suddenly, one day:
The GPS mount was severely damaged, and the GPS vanished! the rover made its way to the edge of the field, far away from the mission, and had been damaged. The rover's ESCs were sounding, so it hadn't been driving for a while. Very strange!
The next day, with a new GPS and mast, it was up and running again.
The rover continued to follow the mission for quite some time. Here's an image from August:
The rover's battery was upgraded to keep it a little safer.
As the earth moved around its home star, the rover began to receive less sunlight each day, causing it to drive less often. The sun moved lower and lower in the sky until, on the 29th of September, Daniel thought of a plan.
"I'll give you a hint; it involves ailerons."
The next day, Daniel added some more area to the rover's solar panels with his old solar plane's wings. Janky as hell! but it seemed to work! The rover was now collecting much more power. Daniel hoped that this would allow the rover to "drive through a lot of the night now."
But, on the next day:
It somehow got off course?? Daniel hypothesized that it could have been because of the increased GPS position error due to the current solar storm. Interesting stuff!
After it was freed, it continued its circular journey.
The days flew by with some events. Sometimes the rover would get itself stuck in the grass. The gearboxes would get louder, but would always quiet down after some time. The trailer fell off, but the rover kept on going. Only when plants got stuck in the machine did the rover stop moving forward.
Its trail through the field became more and more defined:
But the days kept getting shorter, and the days more full of weather events. The trailer, being made from literal wings, did succumb to the wind a few times.
On the 18th, the trailer was cut loose, as the wind had damaged its wires after it had been flipped over. But it kept on going!
The days got gloomier. The rover's battery was manually charged a few times to keep it moving.
Hilariously, the rover's path it had engraved into the field had also been engraved into the imagery of Bing maps, as displayed on Daniel's Herelink:
Absolutely beautiful.
As time went on, the rover's battery needed to be swapped constantly; the sun wasn't high enough in the sky to keep it at a high enough voltage to keep it moving.
The waypoint mission had slowly been drifting towards the south. Mission Planner, a program used to view Ardupilot telemetry, showed that the rover's heading in software was different than its heading in hardware, which may have contributed to this trend.
And thats where the mission was cut short. By December 11th, the rover had driven this mission for months, and all the motors were still running, but without an ability to run with regular power from the sun, its goal wasn't being met.
"I feel like I just euthanized my dog."
The rover had been through the ringer and came out mostly unscathed. It didn't end up completely destroyed, it could have kept on driving! what a glorious machine.
He then opened up the gearboxes and assessed the damage. I won't post a string of images about it, watch from time 30:03. There's grass growing on the thing!
I love this video so much. I grew attached to this wonderful little thing as it continued to drive itself in circles with its brightly colored wheels and rusty steel frame, GPS haphazardly stuck on its rear. It just kept on going, all on its own. It needed some help, but it always seemed to try its best, even when the compass lied to the autopilot, the wind blew off the trailer, the brambles grasped it and held it down, the GPS was torn off, and the sun drew lower in the sky. It kept on driving as far as it could through the day and night and as Daniel's other projects took flight and were made into their own videos. I love that rover so much, its so fucking adorable!!!
This is what made me purchase my own autopilot and slap it on my old RC car. It could drive wherever I pointed on the map, just like rctestflight's rover. When I can get my hands on another autopilot-enabled craft, I'll be exceedingly happy. because look at that thing. its so cool. look at him!!!
1000W LED Flashlight - Worlds Brightest (90,000 Lumens)
1000W LED Flashlight – Worlds Brightest (90,000 Lumens)
Whoa! What’s he trying to do – light up the entire world? Now all he has to do is “mount the batman logo to the front and point it at the clouds”, as one commenter suggested, lol… This homemade flashlight light bar uses ten 100W LED chips to produce an estimated 90,000 Lumens of light…. rctestflight
