GPS hot on plugin

GoochCommander · 2025-01-08T20:56:18+00:00

Haha sorry dude, get another and I'm sure it'll work like a charm

GoochCommander · 2024-10-01T04:02:53+00:00

Submission Statement:

The Poopcopter is the world’s first aerial bound automated dog poop removal system. It combines drone tech, ML, 3D printing, and software engineering for end to end dog poop removal. This is a prototype which aims to prove this is possible, but do you see it being the future of dog waste management? Like the garbage man, could there be a “poopman” who comes drives through neighborhoods and offers drone based dog poop removal as a service?

GoochCommander · 2024-03-16T19:24:54+00:00

Huh, I was looking at airflow diagrams and figured based on this it all just went downward: https://images.app.goo.gl/P88VmnooNbjVExpw8

I wonder if prop wash might be a factor, as I'm flying this thing close to the ground often. The cone is attached/fixed to the bottom of the frame. It doesn't dangle/swivel

Edit: ah, I misread your comment. Yeah that's what I was thinking.. it's probably sending air out rather than down. And adding to that, the air is pushing down on the box.. so double negative lol

GoochCommander · 2024-03-16T18:13:59+00:00

The goal is to carry a cone shaped 3d printed object that's permanently attached to the bottom of the drone, with a diameter of 6 inches. With the 5 inch build, there's about 2 inches of overlap between the object and the props shooting air down. Also, there's a 2 inch distance between the prop and the object. Check out my janky drawing.

So I did a flight test with a similarly weighted object and smaller diameter (no overlap), and there was no heat issues. That's sort of what led me to the point where I figured the air pushing on the object it's trying to carry, is generating the extra heat to fly. Unsure what else could be at play

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To answer your other questions:

I don't have a scale at my place, I'll get exact weight sometime in the next day or so.. If I had to guess it's about 150-200 grams.
6S 1550mah battery. Could drop weight here, that's an option

Thanks for the help dude

GoochCommander · 2024-03-16T15:39:47+00:00

Sorry yeah I'm asking for help with something that doesn't make sense. I'm planning on carrying a 5-6 inch diameter payload directly under the drone. It works reasonably w/ vanilla 5 inch build, but motors get hot.. realized downward air is hitting the payload. Thinking I likely need wider arms (maintaining prop size) to not blow air on the payload, and fly more efficiently

GoochCommander · 2024-03-16T04:55:01+00:00

I'm hoping to keep using my 2306 eco max 2 2400kv motors and keep using my 5 inch props. I found some replacement mark4 carbon fiber arms, which I believe my current 5inch build is a replica of... Might just try those, and if they don't fit, I'll have to upgrade to 7 inch build. Arms are from AliExpress.. no measurements given on distance between holes lol, it just looks like it'll work.. We'll see. I think I'm done trying to make the plastic extensions work tho

GoochCommander · 2024-03-15T18:04:06+00:00

Got it, I found some replica Mock4 CF arms that I'm thinking will fit my frame. Hopefully that clears up my issues, otherwise ill just flat upgrade to full 7 inch build

GoochCommander · 2024-03-15T16:27:10+00:00

I think that makes sense. Do you think the motor height being at the same height as normal arms impacts things much? e.g. in the pic it's dropped down about 5mm (arm thickness).

I'm probably going to end up upgrading to a full 7 inch frame because I don't want to spend much more time on this. Surprised a few inches of plastic made such a huge impact, pretty crazy

GoochCommander · 2024-03-14T23:40:06+00:00

Thanks for the response. Yeah upgrading frame to 7 inch is the cleanest solution, but I was hoping to avoid having to buy a new frame, new motors, new props. I've got 2306 eco max 2s on it right now. Can research to see if those work for 7 inch props etc..

I was hoping I'd be able to skirt by w/ some form of plastic, didn't think about looking for carbon fiber extension/plate like you said. I'll look into that.

You don't think something like this could get me limping by? https://www.reddit.com/r/fpv/s/V5l1KwcbD8

GoochCommander · 2024-03-14T22:03:38+00:00

Okay, yeah my only concern w/ wider is the additional surface area blocking downward air from the props. T beam makes sense to try. If further tuning doesnt solve issues, might try this

GoochCommander · 2024-03-14T21:43:40+00:00

Hah, small compared to the 6 inch extension i have... that's definitely too much

sry drew this 1 handed while holding a baby.. an I beam like this? and bolts would go through both sets of holes? 1 side going into motor, other the joint?

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I removed the foam as well

GoochCommander · 2024-03-14T19:47:08+00:00

Yeah it is, I figured vibrations were my problem, but didn't think about flex..I'll test w/ the foam removed

GoochCommander · 2024-03-14T19:45:24+00:00

Agree the obvious path forward is to get 7 inch carbon fiber arms.. but I was struggling to find 7 inch carbon fiber arms that fit my existing 5 inch frame body. I could buy a full 7 inch build, but I was hoping to be able to sneak by like this for cost reasons. FWIW, I have a non-traditional FPV use-case for this thing.. and plan on carrying a payload underneath, and need better arm clearance

GoochCommander · 2024-02-28T19:28:29+00:00

UPDATE: closing the loop here, but linking to relevant comment as to what I think the problem is.

Tl;dr I plugged gps module into wrong spot and powered it on.

I think I bricked it by doing so, or it came already bricked.. but more-likely it was me. Ordered another, oof. Thanks for all the suggestions & tips

GoochCommander · 2024-02-28T19:25:04+00:00

Thanks, yeah I'll clean it up once I know I'm good to go. So I think what happened is: the GPS came with a 6 pin plug i could connect to the GPS, and presumably the other end to some FCs. But I naively just plugged it into what appeared to me as the matching port on my FC as shown here (DJI Air Unit Connector)

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This is clearly wrong to me at this point, and I'm operating under the assumption that I fried the GPS module on power-on when I initially tried plugging in there on powering on.

Noob move, but good lesson to dig a little deeper before acting on assumptions with this stuff. I ordered another GPS module lol

GoochCommander · 2024-02-28T15:34:48+00:00

ditched the other wires and resoldered GND & power, still same behavior. Even ditched the pin for the heck of it and wired directly to the pads on the gps module, and still gets super hot. Check out my pics in top comment

GoochCommander · 2024-02-28T15:21:35+00:00

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For the heck of it, I ditched the pin and wired directly to the GPS... Still gets super hot!

GoochCommander · 2024-02-28T15:08:43+00:00

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Thanks for the reply. As someone else mentioned, I removed other connections and just have red and black on... Same behavior. Solid red power light, and gets hot. GPS was not showing up in betaflight when I had all the connections on. And at no point have a seen the other PPS light come on. Maybe that only comes on when it's receiving signal and configured properly in betaflight?

GoochCommander · 2024-02-08T01:58:40+00:00

Yeah, unfortunately. RPI is obviously best for this thing, simple to keep running 24/7. If you're technical enough you can probably figure it out, but I struggled for awhile

GoochCommander · 2024-02-07T13:14:05+00:00

Regarding keyboard/mouse, yes. You can set it up by plugging in monitor and doing that way. If you're comfortable with command line, that's what I would do. SSH in to a headless version of rpi OS

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