Just finished my first one… some parts didnt come so I borrowed them from an old vesc…while flashing the firmware there was smoke…sigh I’ll report back when my 2. iteration of parts arrives…
Can you get a closeup of the DRV?
Is that flux or solder? It should really be cleaned up to properly inspect, solder balls floating around
And what’s going on here
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To be honest this is the first smd soldering I’ve ever done. So its learning by doing so this was a 80$ lesson so far…
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I have an inrunner 5000kv and tested it with a 3S battery (specs says 2S max) and got about 100k erpm. Here is a printscreen, top is BLDC and bottom FOC.
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That will buff right out
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absolutly wonderful! great to see its bullet proof at high erpm
If I aquire a new skill im the process I’m okay with ruining s couple boards 
I also learned to never order the exact BOM since parts cost fractions of pennies sometimes.
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I just taught myself an $80 lesson yesterday trying to make a carvon fiber deck it’s all in the game brother
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Yes, but by ordering not exactly the same parts (lower quality for fewer pennies) you might add one extra “O” to the BOM.
I meant order more than exactly them BOM because the little parts are never to be found once dropped and dont break the bank to order 50 instead of 4.
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That makes sense.
Hot air I think my stencil was too thick and added to much solder paste…
Hi Stewii,
At those high erpm, are there still any noise differences bewteen BLDC and FOC?!
Thierry
Thank you for the recording. It sounds like a little lower frequency on FOC. stewii are you making any progress? Looking forward to putting it to work.
Update:
With the help of @Stewii, I was able to fix the DRV error.
Everytime I moved the USB plug from the slave ESC a DRV error was stored, at first I thought the cause was a bad DRV or USB plug solder joint.
When I disassembled the ESC I found the temperature wire crooked against all electronics the screws were compresssing it even more against the motherboard.
Once I routed that wire correctly and bolt the ESC back again, BOOM! no more DRV error.
I’m running BLDC at the moment but tomorrow I’ll go back to FOC.
Sorry to all you guys for throwing wrong information about the blow DRV chip.
ESCapes are working amazing so far.
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