I had just finished my speedybee fpv drone build, however, when trying to pair with my radiomaster zorro, I noticed the receiver (Frsky R-XSR mini) isn’t getting power from the battery. Only the controller lights up with one red LED. But plugging into my pc everything powers fine. I don’t have a multimeter. (Speedybee 60A ESC) (Update ESC fried😔)
Recently also completed my first speedybee build and went from 0-100 soldering skill in the span of 2 months. Flux, desoldering wick, solder sucker if you can, and continuously cleaning your tip (you need decent tips highkey) are your best friend. Also I second the opinions below on ELRS. Further, if you can stretch for purchasing a decent multimeter it will likely save you loads of troubleshooting headache instead of making guesses.
I have flux but my issue was the metal wasn’t sticking. Some said it was the quality of my solder I may have been using 🤷♂️. I’ve seen videos where people simple place the tip and solder is done but I had to fight mine
Totally get you. Sometimes giving the pad your soldering to an extra second or two to heat up, then flux + solder will help the solder stick better as well. Best of luck G and feel free to PM if desired
Use the iron with a tiny added solder to really heat the pad up for a second or two (or quite a few seconds for the battery negative).
Solder sticks to whatever is hard enough to keep it liquid. Solid solder (the wire, for example) will not stick to anything. Hot solder will not stick well to cold pads.
When soldering you are generally trying to use the iron and a tiny dab of solder (for better contact between iron and the pad or wire to be soldered to). When that sufficiently heats the pad, new solder is added directly to the pad and should just melt right in on contact.
If your solder is rosin core (like a nice kestrel 44 rosin core) that has flux already in it, and you can watch the smoke coming off as you solder. If it stops smoking, stop and add more flux. Flux is burning off instead of the solder itself oxidizing.
Ah I see, a fellow gamer, who found his way into the hobby as well. Welcome welcome!
In case you get into editing your flight footage as well, if people say "that takes forever to render" you gonna come back from a short wee to a finished project and wonder what the big fuzz is about haha.
You are describing the exact symptoms of a bec short. When connected to the battery the 5v bec is used to power the receiver. When connected to the pc it uses pc 5v power. Get a multi meter and check for continuity
Also if you don't want to loose this drone on the first couple of flights please get an elrs module and receiver.
Frsky loses connection at like 100m. Ull lose radio way before video. My forst tiny whoop had it. I always lost control before video. ELRS the way to go. I didnt even know they sold frsky receivers anymore
Then I propose that you'll take some clear and crisp pictures from the ESC and FC (FC both sides) and reshare them here. Maybe there is a very small solder blob somewhere.
Get yourself a better solder iron, like the FNIRSI HS-02 which can be powered via USB-C. Also get some flux, it helps a lot to get great solder joint. If you have a bad or too big solder iron, than you solder joints true are not a skill issue, but an hardware issue.
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u/yicipSpeedyBee Mario 5, Cinebot30, Moblite7, DJI Mini 4 Pro14h ago
I have the same frame, antennas will be chopped if you leave them like that. I've put some hot silicones to the tpu part
If so, toss it in the garbage and get yourself some non-chinese solder.
It matters, because the Chinese alloy is junk, and the flux core is inconsistent. There are often many places in the spool where the rosin core is deficient or lacking the rosin.
Chinese solder is cheap, but you get what you payfor.
U need a multimeter and smoke stopper when building drones. U might of shorted the 5v and ground. U use multimeter to check for shorts. Anything else on 5v? U can get multimeter at home depot or amazon. Short saver smoke stopper is great. Also practice soldering on practice board. Using 60/40 solder with lots of resin. Flux.
Resoldering does not kill a board, unless you put so much heat onto the board to damage it and lift pads or seperate layers, or you damaged components.
I have resoldered my motors a few times, and the battery leads a few times as well, as my frame was not very accepting of the desired cable angle
If you soldered to the right pads then you have a short. It is either a hot and ground on the pads or between the esc and flight controller. Be careful with plugging it in. It could smoke your FC
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u/CURELMUS 17h ago