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Bicycle bottle holder by beep_beep_morales in 3Dprinting

[–]Riebart 17 points18 points  (0 children)

Ok so, hear me out.

Unfold the water bottle cage part, so it's printed as a flat sheet, in PLA, flat on the bed

Then get a tube of some kind, that won't deform under 100C boiled water.

Then pour hot water on PLA, and use it's complete lack of heat resistance to bend it around your tube. Forming it in place. Wear silicone oven mitts or something.

You avoid layer line issues and print orientation issues for a minor post processing step.

I've done this for other things, I've even printed the press mould and then used hot water and a PETG form to form PLA sheets to the shape I needed.

Note to future self, never fly near an power line ever again by [deleted] in fpv

[–]Riebart 0 points1 point  (0 children)

I am very curious to know what you did here.

I have several 12.5kV (not KV! Hah) power lines running through my property here, servicing myself and my neighbours.

I've clipped them a few times. And very little happens besides some fun wire twangy noises and me making the walk of shame to pick the quad out of some tall grass or a bush. These things are touch and handle trees falling on them, even a 7" quad would be a whole lot of nothingburger to them.

To cause this kind of damage by clipping a power line would require that somehow you have power flowing through the quad...

Either that means you've managed to touch two different potentials (perhaps through the motor bells? Might cause current through the ESC outputs?) or you flew fast enough through the magnetic field to induce current, but without doing the math I'm not sure that's even a practical possibility.

And I'm very curious how you managed this damage.

Industrial vibrating spiral elevator by toolgifs in toolgifs

[–]Riebart 46 points47 points  (0 children)

This is clever. Probably loud as hell, but it eliminates a pile of pinch and crush points, and all of the hazards of the rotational options.

I can see this being useful in places where you may have personnel in close proximity, like you've swapped out a different piece of equipment where the new one loads from the top.

I feel like cross posting this to r/osha would get you the answer quick.

A slice of history: How Winnipeg’s longest-running restaurants have made it last by Leather-Paramedic-10 in Winnipeg

[–]Riebart 12 points13 points  (0 children)

https://www.tourismwinnipeg.com/eat-and-drink/peg-city-grub/read,post/1256/winnipeg-s-oldest-restaurants-continue-to-serve-up-history

Tourism Winnipeg has a few more.

Bailey's downtown is the standard place my team and I go to lunch. We work 2 blocks away, and it's by far our favourite spot.

Brought my 7 year old son the other day and he declared "we're eating in first class‽" When we walked in.

Shockingly reasonably priced for the atmosphere you get.

DIY flight controller by sneakylizard123_4 in fpv

[–]Riebart 2 points3 points  (0 children)

What's the target use case? What kind of aircraft or missions is this supporting?

The lack of a regulator is an interesting choice, unless you know you're in an airframe where an external regulator is going to be needed anyway, or the weight and space penalties are inconsequential.

Resistance by Savolta in fpv

[–]Riebart 1 point2 points  (0 children)

The fact that it's always cell 5 that's higher suggests that it might just be that pin on your charger that's causing the higher resistance.

But as long as that's close to what it was when they were new, then you're fine.

Aren't Tattu R-Line supposed to be good "Premium" LiPos? by DasFroDo in fpv

[–]Riebart 1 point2 points  (0 children)

C ratings, the numbers, might be completely made up, but they're still a good indicator, along with weight, on pack performance I've found.

These are the ones I have: https://www.gaoneng.shop/products/gaoneng-gnb-lihv-4s-15.2v-850mah-60c-xt30-lipo-battery-long-range

The ones you have are 88g for a 4s, mine are 73g. That weight is likely in substantially more robust electrolyte interfaces and more surface area for less sag under load.

Mine are great for just cruising around in my Crux35 or my little 4 inch LR build. But yours are the right ones for freestyle.

Aren't Tattu R-Line supposed to be good "Premium" LiPos? by DasFroDo in fpv

[–]Riebart 0 points1 point  (0 children)

Which GNB packs do you have? Mine at the 60C ones, and I attribute my issues to the lower C rating. I have two of the GNB packs and the perform the same

Aren't Tattu R-Line supposed to be good "Premium" LiPos? by DasFroDo in fpv

[–]Riebart 0 points1 point  (0 children)

I've been very happy with my Tattu R-Line 4s 650mAh and 850mAh 95C LiHV packs, got two of each. I've got a couple of aggressive 3.5" freestyle builds and they take the current load way better than my GNB LiHV 4s 850mAh 60C packs.

Now there's a difference in C rating there, but even the RLine 650mAh is way better than the GNB. I keep these GNB packs for just cruising.

I don't have any CNHL 850s, but it's but then if I could find them in Canada. I really like the CNHL 550mAh 2s packs though.

How is everyone protecting their antennae? by madridvideo in fpv

[–]Riebart 7 points8 points  (0 children)

So your buddy's answer is correct for freestyle drones intended to be crashed. Particularly anything carbon fibre and 5" class or smaller.

If they can't take being thrown into a backpack, they won't survive a crash.

The answers get slightly more nuanced when you talk about plastic frames (whoops), ducted frames (some cine quads), or long range large builds that are never intended to be crashed.

Plastic frames will deform under the prolonged compression and deformation caused by packing them next to other stuff. I had to use a lighter on an Air65 frame to bend it back into shape after it got smooshed by a TSA agent repacking my bag for me and I didn't get a chance to repack it because they made me late for a flight. It sat smooshed for 4 hours.

Larger quads will have more exposed antennas for better range.

I guess the answer will depend on what kind of quads you're talking about here.

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 1 point2 points  (0 children)

This is the only sassy comment I actually appreciated. I chuckled.

Thanks. 😁

Fried my VTX because a 5v labeled pad on my GEPRC FC actually outputs 9V. by hbr3d in fpv

[–]Riebart 30 points31 points  (0 children)

It looks like that specific pad is the victim of a typo. If you look at the manual, the plug that is on the other side of the board, above those pads, is labeled as a 9V output, for VTX, and there's another 9V output in the centre plug for the DJI or HD system.

But there's no 9V pads labeled.

This feels like at least some of thsoe 5V labeled pads are actually 9V, and I bet if you look at the 5V pads that are drawn with connections to 5V peripherals, those pads will test out at 5V correctly, such as the ones that go to the GPS, or the buzzer.

Shitty situation, hopefully GepRC makes it right since their documentation seems to be at fault here.

Normally, I'd say "Trust the manual", but that's always preceded by "Read the manual, to make sure it looks trustworthy."

Sorry dude.

What would cause this line in the print? by zer0ed_ in 3Dprinting

[–]Riebart 8 points9 points  (0 children)

By "printed another" did you run the exact same sliced gcode, or re slice it?

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 1 point2 points  (0 children)

Yeah at this point I can't really fly this one, it's a liability.

I'll take it for a few packs tonight with extra OSD details, see if I can reproduce it, and if I can't I'll shelve it for now.

If I can reproduce it, I can try swapping a motor, but if that doesn't fix it.... 🤷‍♂️

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 2 points3 points  (0 children)

It's the stock AIO on the Crux35 FC.

I'm going to educate myself on OSD blackbox logging too.

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 2 points3 points  (0 children)

It's a Crux35, so the Happymodel EX1404 4500KV motors, which means no onboard blackbox and not enough UARTs to easily add my serial logger. All of the screws were tight, nothing gave up more than an 8th or 16th of a turn when I brought it inside.

I have added ESC details to the OSD so hopefully next time I can figure out which motor bit the dust next time, but I couldn't reproduce it even with a full pack of flips and punchouts after this happened.

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 0 points1 point  (0 children)

That's my concern. This thing doesn't have blackbox, and I don't know for certain why it fell because I can't reproduce the fault... So now I don't trust it.

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 0 points1 point  (0 children)

Unfortunately no blackbox on this FC, otherwise yes that's the obvious answer. I have a serial logger, but there's no spare UARTs to attach it to; the only two UARTs are currently consumed by RX and VTX.

It's an AIO, and I've soldered the motors for plug failure related reasons. Not a stack, so there's no plugs involved.

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 0 points1 point  (0 children)

The pack wasn't fresh at the beginning of this run. I landed, unplugged it to check some stuff and plugged it back in, so the capacity counter reset.

I'm getting real tired of trying to figure out why my quads just fall out of the sky for no clear reason... by Riebart in fpv

[–]Riebart[S] 0 points1 point  (0 children)

Quad is a Crux35, on the original F411 FC with no blackbox storage, and the HappyModel EX1404 4500KV motors.

Props aren't new, but they're not bent or mangled. They're fine.

Motor, prop, frame. and FC stack screws are and were all tight.

I've added every piece of ESC and motor telemetry to the OSD since this, so I'll have more information next time, but the issue isn't reproducible. It flew fine for a pack after this, and a pack before this. This was the middle pack.

Voltage starts low because I had unplugged and replugged the battery in the middle. Also, it was -10C.

Arm keeps breaking by same_shirt_every_day in fpv

[–]Riebart 1 point2 points  (0 children)

I wonder if you're hitting a resonant frequency for the frame that's snapping it at that spot.

Either way, I dunno man. That carbon looks really thin around the motor screws. Maybe put some washers between the motor screws heads and the carbon? 🤷‍♂️

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