#6S Racing Drone

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grave lion
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Made a post to document the building of my new drone ๐Ÿ™‚

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For now i just made the ESC, 6S 24A

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any recomendation?

coarse inlet
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place the caps near the mosfets and keep the looparea cap -> mosfet -> mosfet -> cap small

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avoid vias in the high current path if possible

grave lion
grave lion
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and i can't really place them under unfortunately

grave lion
coarse inlet
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c8-c17
place 1 or 2 of them left to each mosfet pair

grave lion
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why?

coarse inlet
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like this and extend the zones on q2 and q4 to include the caps

grave lion
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extending might be a bad idea

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it's already 7mm

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if i make it smaller it will heat up

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btw, what advantage does this give?

coarse inlet
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otherwise you will get voltage peaks on your dc link -> kills mosfets

grave lion
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oh ok, i tought all those dc link caps were enough

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i will place 1 cap per pair

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so i won't need to make that smaller

coarse inlet
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the total capacitance might be enough but you want a low esr/esl connection to the mosfets

grave lion
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ok

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btw, i need those 2 vias in the high current path are to power the driver

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or should i moe them down?

coarse inlet
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top side would be best as vias add more inductance

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try one / pair

grave lion
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so just 1 via?

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like this?

coarse inlet
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i'm talking about vias near the mosfets

grave lion
grave lion
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this one?

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or the gnd ones?

coarse inlet
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looks like a misunderstanding happned
i was talking about avoiding vias as conductors in the cap <-> mosfet path

grave lion
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ohh

coarse inlet
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the others are fine as long as they don't reduce the zone width too much

grave lion
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well, i have removed the 2 ones in the place of the cap pad

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thx for these informations

grave lion
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A render of the finished ESC

merry oyster
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That is pretty cool! I'd make your signal pads a bit larger and stronger, they might rip off easily otherwise

grave lion
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I'll make them 2 mm

merry oyster
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i assume you've build a racequad before?

grave lion
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No

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First time building one

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Only used small ones

merry oyster
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ah

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that'll be a big project then^^

grave lion
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Maybe

merry oyster
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make sure that the ESCs will fit on the arms of your chosen frame

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they look quite big

grave lion
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About 34 or 37mm large

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They will stay near the center

merry oyster
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ah, so a big of a bigger one

grave lion
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And motor has 1kg thrust at max power anyway

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I can make it a bit bigger

merry oyster
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most racequads these days use 4in1 ESCs or all in one systems where escs and FC is on the same board

grave lion
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Ik

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I prefer to separate them for now

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It's just a test

merry oyster
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it makes sense for development^^

grave lion
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almost done with the FC

rare dagger
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nice!

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what microcontroller?

naive cape
grave lion
grave lion
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I'll give you the full name once i'm home

naive cape
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Dont think it has a label but the one at the top

grave lion
naive cape
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yessir

merry oyster
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(the top is the one with antenna connector)

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bottom one also has an antenna

grave lion
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It's an esp32-N1U if i remember correctly

merry oyster
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i'd be interested in both blobsweat

grave lion
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The bottom one is an M10S

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Basically gps

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The center one is an stm32f767

merry oyster
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huh, a gps antenna that small? Cool!

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what does the esp do?

grave lion
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Yeah, should work i hope

grave lion
merry oyster
grave lion
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I'll be using wifi for this

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At least for now

merry oyster
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not ideal

grave lion
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Ik

merry oyster
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you could use expressLRS

grave lion
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But it's the one i have

merry oyster
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it's an open source LORA based rc link

grave lion
merry oyster
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no

grave lion
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That's the problem

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I don't have a remote for now

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I'll make one in the future

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This is just for testing rn

grave lion
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Finally finished

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now

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i have to make the BMS

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oof

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and then it's finally done

merry oyster
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oooh, a BMS

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cool

grave lion
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so i don't have to design a charger

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max 100W of charge power