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Flight Controller Smoke
#1
I just finished wiring up a quad with a Kombini fc. I checked for continuity with a multimeter and everything seemed alright, no beeps. When I plugged the quad in, i saw smoke, and the kombini was unresponsive. Please help!
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#2
Can't help without pictures of how you wired everything up and pictures of the flight controller.

There may be some smart and helpful people here, but we're not mind readers or remote vision mystics, so you have to give us something to work with.
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#3
Hindsight is 20/20, but a smoke stopper is a must.
[-] The following 3 users Like voodoo614's post:
  • Jk007, Carl.Vegas, unseen
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#4
Reverse polarity? As unseen mentioned, send us some pics Tongue
Personally never used a smoke stopper and never fried anything, I find focusing and double checking with multi-meter to be adequate Tongue
Check out my videos @ www.youtube.com/Marcelfint and let me know what you think!
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#5
(02-Oct-2017, 07:34 AM)Fint Wrote: Reverse polarity? As unseen mentioned, send us some pics Tongue
Personally never used a smoke stopper and never fried anything, I find focusing and double checking with multi-meter to be adequate Tongue

You will regret that complacency one day, it's only a matter of time.


Wink
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#6
(02-Oct-2017, 07:51 AM)unseen Wrote: You will regret that complacency one day, it's only a matter of time.

Not sure that's complacency....("focus and double-checking" sounds anything but).  One could argue that using a smoke-stopper is complacent - if you use it so you don't have to focus or use a multimeter...
[-] The following 2 users Like sloscotty's post:
  • rryyyaann, Snuffypot11
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#7
Both things are required! Even if you've double checked everything visually and checked for shorts with your multimeter, there's still the chance of missing something or making a mistake.

I'm just as careful about inspecting everything with my microscope and checking for shorts before I power up for the first time, but I still use my current limited bench supply for the first power up, just in case!
[-] The following 1 user Likes unseen's post:
  • E.L.K.
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#8
Using a smoke stopper is like having insurance... You may be so good at being careful that you'll never use it... but if there is that one time that you run into catastrophe you'll either regret not having it or be grateful that you did have it.

When taking your pics it'll be easier if the FC is exposed btw (take off top of frame). It's probably obvious but I figured I'd mention it just to save time just in case... sort of like picture insurance!
carl.vegas
Current Quads: Operational: Diatone GT2 200 In need of repair: Bumble Bee, tehStein,  Slightly modified Vortex 250 
[-] The following 2 users Like Carl.Vegas's post:
  • E.L.K., unseen
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#9
just a quick add-on to the original topic: do you guys recommend the bulb-type of smoke stopper or the fuse-type? i've built one of each, but not sure which to employ....
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#10
(02-Oct-2017, 05:13 AM)voodoo614 Wrote: Hindsight is 20/20, but a smoke stopper is a must.

Agreed. Take the time to make one. Well worth it. It has save me from the "Magic Smoke" a few times.
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#11
(13-Oct-2017, 04:09 PM)aeroluxifer Wrote: just a quick add-on to the original topic: do you guys recommend the bulb-type of smoke stopper or the fuse-type? i've built one of each, but not sure which to employ....

If you are using a bulb and you have a short it will light up, very easy to see, and it will recover automatically if you try it again after you fixed it.
A fuse will melt and you have to replace it every time, also a bulb can give some power to start correctly up. If you have a high inrush current it will break directly, the bulb will only glow for a short time.
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