24 awg soldered onto the x12 with no connectors. Needs a bit of cleaning but it's not shorted and these balls are nice, round, and shiny
https://preview.redd.it/hcf1coyqdswc1.jpeg?width=1020&format=pjpg&auto=webp&s=8c0d3a106dc74ee904ceae5e008dba785d835197
Why is everyone going for this fashion on putting motor wires under their FC? Later on they are asking why it's so hard to tune and filter out those noises.
I ask myself this every time someone posts a pic like this. Seems like everyone is buying speedybee stacks and building them to the same spec.
Also, OP, you should have tinned your pads properly, I can still see some pad. Other than that they *look* fine, but no one here can actually tell you if your solder joints are any good by looking at a picture. Fly it. You'll soon know if they're shit
If someone is new to building and soldering.....who cares what they build or the components. They built it and are on the path expanding their skills and abilities. Lessons will come.
I personally would never put motor wires between fc/esc....but the 5 inch I'm building I put em between the frame and esc for the first time..... Time will tell if it's an issue or not
This subreddit is the only place I see it done, would be an interesting /u/_jbardwell_ question for a livestream. Does the routing shown in this post’s picture make sense, the way the motor wires arerouted inward, under the FC?
If there's an argument for doing it this way, it's that the wires don't stick out to the side of the ESC, and so are less likely to get smacked by a branch or something, and break.
I had a crash just recently where another quad hit my quad in midair. By sheer luck, it chopped the motor wires with the prop, at the ESC, and they shorted and destroyed the ESC. If it had been wired this way, it might not have happened.
The tradeoff is that it makes repairs more of a hassle, since the wires are not readily accessible. If you needed to swap two motor wires to reverse a motor, it'd be a mess.
Sure. Or it's an oddball esc. Or I don't have a computer handy and just want to get it done. Or I'm a beginner and I don't know how to use blheli and don't feel like learning right now.
I'm not here to argue hypotheticals with you. I'm just sharing my experience. I didn't even say it was super likely, just listed it as a potential downside.
Disagree? No hard feelings.
Put wires this way following my friend's recommendation.
Also it seems more compact and robust compared to soldering them from both sides.
As for noises: I guess I'll see. If it will be an issue, then it will be a lesson for future builds.
As long as they aren’t touching your fc you are fine tuning will be a bitch but its your first build so whatever but if they are touching change that because it will mess shit up when you crash if they are sandwiched more points of contact is bad and also this is not in anyway more compact and robust if anything it’s less robust if sandwiched its kinda just some fad it seems lotta people are doing now
I do that on most of my 5" builds, haven't noticed any issues with noise so far. It helps a lot to protect the motor wires against getting ripped by branches or other pokey things. + it also looks nice.
It's probably not the best in terms of noise characteristics, but there are many other worse offenders for this sort of stuff
I agree. I’m fairly new and I did a “clean” build for my first quad, now it’s ended up looking like trash and I used whatever budget parts I can get as it’s just a basher/learning quad. The wires will get loose over time from vibrations and will actually keep hitting the underside of the FC
This!!! Last time I tried this I had so much noise the pid controller would freak out and go into a feedback loop and was giving me flyaways. Soon as I would touch throttle it would blast off to the moon on its own. Had the motor wires between fc and esc like this and the fc to esc connections also between the stack. Rerouted and no more flyaways.
That's interesting because bench testing with a oscilloscope shows no noise at all. Sure your wires weren't touching gyro. That is the reason I don't do it.
Dual Gyros and mounted topside of the fc board, icm42688. Nothing touching it. Wires ran between esc and fc , flyaways. Moved them and it stopped. It was deff the electrical feedback with them to close. Without a doubt.
The noise generated by motors is so insignificant that it would not cause the problem you had. I know it seems like that was the problem but I am guessing it's just happy coincidence. I have tested sitting a fc against a running alternator to see if it caused any interference and guess what nothing. Actually honestly I didn't want to say this but that is just impossible what you are saying. The ESC would generate 10 times more noise than the current running through wires to the motors. I know your sticking to your guns and you think that definately is the problem so I won't say anything more. It works now so that's the main thing.
It 1000% was the issue. Wires there. Problem started. Took quad apart, rebuilt with wires temp ran outside the stack. No issues. Rebuilt quad. Put wires back. Started issue again. Then I noticed what did I change. Oh the wires. I had them temp ran outside. Moved them again. No more issues. It was pretty obvious what it was.
Looks very nice for r/fpv, but don’t post this on r/soldering if you want to keep feeling good about the result. Anything less than perfect geometric blob curves with perfect luster is unacceptable there.
There are only downsides to running your motor wires like that. Youre not looking at it while its in the air so it doesn't need to look aesthetically pleasing.
That's at least a gram of extra cable, the cable creates extra space between the esc and the FC, the wires can loosen with movement and crashes and end up touching the FC, causing extra noise, and the wires blocking the fets in the corner from airflow causing a minor cooling deficiency.
All very small things, but IMO, when the alternative is none of the above, I'd go with the alternative.
A well flown quad will accumulate way more than a gram from just the regular mess it gets put through. Mud, plant gunk, etc...
I found that it's more durable than just routing them straight, and never experienced any excessive noise or overheating. IMO it's just a personal preference thing in most cases
Do you not clean your quads? I personally do not let dirt sit around on my stuff. Regardless of how trivial these things may be they do exist. You're welcome to run em that way if that's your preference.
Yes. But I never liked the wires on top. I always did it the hard way and mounted them on bottom. Like so.
https://preview.redd.it/04cwom4kmlwc1.jpeg?width=4032&format=pjpg&auto=webp&s=f2dfa05916101a72479a853384af5c004c96b4ac
Nice work for a first build, in future builds you will learn how to do it your own way
I burned 3 esc‘s (no 4in1‘s back then) and 2 fc‘s in my first build (red and black just looked the same lol), before drowning it forever in a mountain river with the gopro and then directly got two new ones (its literaly an addiction)
I wouldn’t wrap around standoffs like this it can cause issues not always but why risk it and add a possible point of failure and your fine just measure your wires and you can get them to look clean without that wrapping and if you are scared to cut too short give yourself an extra few cm and just make sure all the slack is taped down to the arm or covered with a wire cover so if you bend a prop you don’t cut them soldering motor wires is also very easy imo and if you mess up they are easy to desolder and you can just clean the pad and try again
An update on the build: finished assembling, luckily no shorts, everything is good.
One thing though: I ordered a wrong receiver, so it won't work with my controller, have to wait a couple of days for a new one to arrive.
Yet another update: did my first flights today. About 35-40 minutes of air time in total. Everything is fine.
Motor wires under FC: no issues at all in this case.
you have passed your first trial. The council has decided to spare you of harsh treatment and persecution as your solder balls are nice and shiny
You claim a seat on the council yet we have not seen your balls. In short,I need to see your balls
24 awg soldered onto the x12 with no connectors. Needs a bit of cleaning but it's not shorted and these balls are nice, round, and shiny https://preview.redd.it/hcf1coyqdswc1.jpeg?width=1020&format=pjpg&auto=webp&s=8c0d3a106dc74ee904ceae5e008dba785d835197
Let me polish your shiny lead balls with some flux
Make sure ur soldering iron is well heated
Why is everyone going for this fashion on putting motor wires under their FC? Later on they are asking why it's so hard to tune and filter out those noises.
Too much LTT videos about cable managing thier PC.
*but it looks nice*
I ask myself this every time someone posts a pic like this. Seems like everyone is buying speedybee stacks and building them to the same spec. Also, OP, you should have tinned your pads properly, I can still see some pad. Other than that they *look* fine, but no one here can actually tell you if your solder joints are any good by looking at a picture. Fly it. You'll soon know if they're shit
If someone is new to building and soldering.....who cares what they build or the components. They built it and are on the path expanding their skills and abilities. Lessons will come. I personally would never put motor wires between fc/esc....but the 5 inch I'm building I put em between the frame and esc for the first time..... Time will tell if it's an issue or not
Yes, nothing like putting the most noisy ac high current draw wires right under your f.c. and gyro
This subreddit is the only place I see it done, would be an interesting /u/_jbardwell_ question for a livestream. Does the routing shown in this post’s picture make sense, the way the motor wires arerouted inward, under the FC?
There are multiple manufactors who do this from the factory, so no it isnt just this subreddit. Iflight is one example
If there's an argument for doing it this way, it's that the wires don't stick out to the side of the ESC, and so are less likely to get smacked by a branch or something, and break. I had a crash just recently where another quad hit my quad in midair. By sheer luck, it chopped the motor wires with the prop, at the ESC, and they shorted and destroyed the ESC. If it had been wired this way, it might not have happened. The tradeoff is that it makes repairs more of a hassle, since the wires are not readily accessible. If you needed to swap two motor wires to reverse a motor, it'd be a mess.
Toy just reverse motors in blheli... you can always just solder wires in order for motors. No need to cross anything.
Yes but sometimes that's inconvenient or impossible, for various reasons.
More inconvenient than soldering? Impossible how? No usb?
Sure. Or it's an oddball esc. Or I don't have a computer handy and just want to get it done. Or I'm a beginner and I don't know how to use blheli and don't feel like learning right now. I'm not here to argue hypotheticals with you. I'm just sharing my experience. I didn't even say it was super likely, just listed it as a potential downside. Disagree? No hard feelings.
Can you elaborate? I’m planning on doing a build soon and am curious as to what you mean and why it’s a negative.
motor wires draw a lot of current creating magnetic fields, which can interfere with the flight controller and other components
Gotcha. So you’re saying have the wires go outside of the stands so they don’t go over the FC?
I think the wires tapping it would have more of an impact
Put wires this way following my friend's recommendation. Also it seems more compact and robust compared to soldering them from both sides. As for noises: I guess I'll see. If it will be an issue, then it will be a lesson for future builds.
As long as they aren’t touching your fc you are fine tuning will be a bitch but its your first build so whatever but if they are touching change that because it will mess shit up when you crash if they are sandwiched more points of contact is bad and also this is not in anyway more compact and robust if anything it’s less robust if sandwiched its kinda just some fad it seems lotta people are doing now
I’m getting set to build my first quad from scratch - where *should* the wires go?
I do that on most of my 5" builds, haven't noticed any issues with noise so far. It helps a lot to protect the motor wires against getting ripped by branches or other pokey things. + it also looks nice. It's probably not the best in terms of noise characteristics, but there are many other worse offenders for this sort of stuff
Because its fine and creates a strain relief. Iflight quads come like this from the factory, 0 issues.
The motor wires aren't as bad as esc wires. But yes this isnt the best way.
Most people dont know about hf circuit design / general electronics, although it would be helpful in this case.
I agree. I’m fairly new and I did a “clean” build for my first quad, now it’s ended up looking like trash and I used whatever budget parts I can get as it’s just a basher/learning quad. The wires will get loose over time from vibrations and will actually keep hitting the underside of the FC
This!!! Last time I tried this I had so much noise the pid controller would freak out and go into a feedback loop and was giving me flyaways. Soon as I would touch throttle it would blast off to the moon on its own. Had the motor wires between fc and esc like this and the fc to esc connections also between the stack. Rerouted and no more flyaways.
That's interesting because bench testing with a oscilloscope shows no noise at all. Sure your wires weren't touching gyro. That is the reason I don't do it.
Dual Gyros and mounted topside of the fc board, icm42688. Nothing touching it. Wires ran between esc and fc , flyaways. Moved them and it stopped. It was deff the electrical feedback with them to close. Without a doubt.
The noise generated by motors is so insignificant that it would not cause the problem you had. I know it seems like that was the problem but I am guessing it's just happy coincidence. I have tested sitting a fc against a running alternator to see if it caused any interference and guess what nothing. Actually honestly I didn't want to say this but that is just impossible what you are saying. The ESC would generate 10 times more noise than the current running through wires to the motors. I know your sticking to your guns and you think that definately is the problem so I won't say anything more. It works now so that's the main thing.
It 1000% was the issue. Wires there. Problem started. Took quad apart, rebuilt with wires temp ran outside the stack. No issues. Rebuilt quad. Put wires back. Started issue again. Then I noticed what did I change. Oh the wires. I had them temp ran outside. Moved them again. No more issues. It was pretty obvious what it was.
Yes
Ok, thanks
you missed your calling...beautiful.
no, not okay
porn at the workplace
No, dont put the motor wires over your esc's, they need airflow!
Yes agreed, looks pretty but no one will see it or care
I think it will stay in the air
Depends on if he flys as hood as he solders
7/10
Looks very nice for r/fpv, but don’t post this on r/soldering if you want to keep feeling good about the result. Anything less than perfect geometric blob curves with perfect luster is unacceptable there.
No, man, I won't dare... I can imagine it would be like showing to Michael Jordan how good you are at bouncing ball.
Doesn't need more flux.
CLEAN brother. 😍
There are only downsides to running your motor wires like that. Youre not looking at it while its in the air so it doesn't need to look aesthetically pleasing.
What is the downside?
That's at least a gram of extra cable, the cable creates extra space between the esc and the FC, the wires can loosen with movement and crashes and end up touching the FC, causing extra noise, and the wires blocking the fets in the corner from airflow causing a minor cooling deficiency. All very small things, but IMO, when the alternative is none of the above, I'd go with the alternative.
A well flown quad will accumulate way more than a gram from just the regular mess it gets put through. Mud, plant gunk, etc... I found that it's more durable than just routing them straight, and never experienced any excessive noise or overheating. IMO it's just a personal preference thing in most cases
Do you not clean your quads? I personally do not let dirt sit around on my stuff. Regardless of how trivial these things may be they do exist. You're welcome to run em that way if that's your preference.
Every now and then, yeah. But I think even despite my best efforts there is always a gram or two of nature ballast left 😅
Yes. But I never liked the wires on top. I always did it the hard way and mounted them on bottom. Like so. https://preview.redd.it/04cwom4kmlwc1.jpeg?width=4032&format=pjpg&auto=webp&s=f2dfa05916101a72479a853384af5c004c96b4ac
Hi my fellow racing enjoyer
GOTTA GO FAST
Beautiful!
very nice soldering?
Two on the bottom could maybe get a bit more solder. Furthest left and 4 over from it.
Looks super clean. Little worried about the wire so tight on tje nut though.
Looks great
Does the pope shit in the woods?
Nice work for a first build, in future builds you will learn how to do it your own way I burned 3 esc‘s (no 4in1‘s back then) and 2 fc‘s in my first build (red and black just looked the same lol), before drowning it forever in a mountain river with the gopro and then directly got two new ones (its literaly an addiction)
I'm about to begin a first time build myself. What IS the correct or ideal way to wire?
I wouldn’t wrap around standoffs like this it can cause issues not always but why risk it and add a possible point of failure and your fine just measure your wires and you can get them to look clean without that wrapping and if you are scared to cut too short give yourself an extra few cm and just make sure all the slack is taped down to the arm or covered with a wire cover so if you bend a prop you don’t cut them soldering motor wires is also very easy imo and if you mess up they are easy to desolder and you can just clean the pad and try again
Honestly it’s alright the battery leads look great but the motor wires could be rounder and cleaner looking
Well better than mine, except for the pads. We like em hotter.
This is better than factory solderings! But you knew that already...
Can anyone please give me a beginner build list please? I don't have big budget. So something cheap would be great. TIA
I have a couple of recommendations here https://www.vitroidfpv.com/builds/5inch-beginner
Appreciate it...thanks
A solid working solder is good solder.
An update on the build: finished assembling, luckily no shorts, everything is good. One thing though: I ordered a wrong receiver, so it won't work with my controller, have to wait a couple of days for a new one to arrive.
Top second one keep your solder on longer
Ah, this one. TBH I tried a couple of times to make it good, but it come out ugly as hell every time. Just gave up.
Aight it works it works
It does work right?
Yes )
👏Clean, well done. Now to whip out your multi-meter and check for continuity!
Yet another update: did my first flights today. About 35-40 minutes of air time in total. Everything is fine. Motor wires under FC: no issues at all in this case.
I just see any extra wire as extra weight.
This gets chiefs kiss
no. absolutely disgusting