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8

That is almost certainly the antenna and one end is supposed to be free. This is increasingly likely as the square black chip next to it (labelled PAN159CY) is the wireless transciever (radio) - and I can't see another antenna candidate or connector.


5

Aside from quality control issues with the product, the only real way to destroy an ESC faster than the effects or normal wear and tear (minimal) is to mistreat it: Using it with a voltage higher than its rating Using it with a motor that's dramatically too large Drawing more current than its rating Frequently stalling the motor against tree branches or ...


5

You may need new batteries. When a LiPo battery fully discharges, thin whiskers of lithium metal form between the plates of the battery. Attempting to recharge the battery will cause these whiskers to overheat, which may cause the battery to catch fire or explode. Commercial batteries from reputable manufacturers have self-monitoring circuitry that will ...


4

The beep from the transmitter indicates that it has linked successfully with the receiver on the drone, so at least part of the board is working. However without detailed knowledge of the design and a range of test tools it will be very hard to trace the fault accurately. Even if you did, you need specialist soldering tools to replace tiny surface mounted ...


4

Most low-end aircraft use small LiPo batteries (lithium polymer batteries). If you want to find a replacement battery you can look at the voltage and capacity of the original battery and purchase a similar one. For example, if the low-end aircraft used a 100mah, 3.7v LiPo battery, you could go to anywhere that sells various batteries such as Amazon or hobby ...


3

Won't repeat two answers already given - offer this only as an addition to both. Might try placing a small piece of shrink wrap tubing around broken strut (before) super glue repair. After superglue repair, pull same down over area where strut was broken and apply nominal heat. Good Luck


3

some frames are carbon fiber and I wouldn't expect superglue to work well. CA is surprisingly good on carbon fibre. It wicks into the cracks and around the splinters, and the large surface area gives the bond a lot of strength. It works better than on the relatively clean breaks of a plastic frame. Don't worry about getting the alignment perfect, the flight ...


3

It depends on the risk you are willing to take, but for such a small drone being flown indoors I'd give it a go1 and accept it may crash - after all, it has already done so once so it can't be made worse! The repair will, however, be a weak point in future crashes. How well it flies will depend on how accurately you reposition the part, but you're likely to ...


3

You would have to be careful so as not to lose some functionality like current sensing or affect the CG of your quadcopter. One way I could see this working is leaving the 4-in-1 ESC on the stack in your quadcopter frame and only wiring up one ESC, with the signal wire from the standalone ESC wired to the pad on the 4-in-1 ESC where the dead channel's ...


2

ESCs usually last for ages. I still use the ones I bought when brushless motors were relatively new, 15+ years ago. That said, if you buy the absolute cheapest they do occasionally just die for no reason. If you buy that pack of 4 (presumably the yellow 30amp ones Banggood sell for $15) I wouldn't be surprised if one dies quite soon and the others last for ...


2

This will be very hard to do. If the shaft is very bent, I advise ordering a new one, if slightly bent, you can lay it flat on a table and try to straighten it with a hammer or vice.


2

As ifconfig pointed out, the most common way to continue using a not entirely functional 4-in-1 is to solder a standalone ESC to substitute for the damaged one(s). Balance is not that much of an issue (that's what the I term is for), unless you're doing the highest performance flying, in which case you should just replace the whole thing. Also, in order to ...


1

Yes, ESCs are semi-disposable. I smoked 3 before I flew my first flight. I buy esc's in groups of 5 (same for motors - I fly quads) then I have a spare for failure. Been using that pattern for 5+ years. ESC's stop failing when: You learn how to build like a bawce (10-15 clean builds or more) You have the right ESC and stop shopping based on price and ...


1

I found this interesting method that can work for larger motor shafts. It involves putting the motor shaft into a drill to spin it. Then something longer is attached to the other side so that it can be bent slightly until it is back in place. Here is a video of it: https://www.youtube.com/watch?time_continue=120&v=9bY8JcDpyRY&feature=emb_title


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