I’m not sure about this to be honest. I haven’t tried the CFOC2 with the VESC tool mobile. It shouldn’t have an issue with the firmware being that the only thing that is different are the hardware-specific .c and .h files.
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I had a weird problem with one of my boards. I couldn’t flash it with ST-link. It kept saying:
“Cannot read memory!
Disable Read Out Protection and retry.”
Option Bytes said RDP level 1 and I couldn’t set it to level 0.
So I gave up… lol nah I knew I had one toast VESC4 laying around. I swaped the stm32f4 chip over and voila it works.
I don’t know if JLC solderd a bad chip or did I fuck it up somehow? What has higher probability?
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I’ve never had an issue with boards from JLCPCB but apparently it’s possible. Just keep an eye out for similar issues with your other boards.
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I had the same issue with one of my boards. All others flashed correctly.
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Ok guys so I have been running some tests on the focers with my funwheel. Everything works perfectly but…ah theres always a but…the electronics on the 5v rail run really hot and the heat increases with increased voltage input. If I power directly through the 5V rail, bypassing the main power supply and drv, its all cool, but if powered via a power source, the D6 diode and the L1 inductor immediately start to get hot, they are warm at 12V and as I increase the voltage, the heat increases to a 5sec-touch-only level. I have tested 2 focers and both have the same issue.
What Ive done so far:
The diode is correctly oriented
I have swapped it out for another diode
Reflashed firmware (correct one).
Changed inductor.
Made sure drv ground pad has enough solder on the bottom and reflowed it.
Nothing solves the issue.
Anyone else experiencing this?
@Lee_Wright @doomy
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No but I can check mine…
Do these components get hot with no external load on the 5v circuit? Or just when you start powering devices?
Nope. Nothing else on 5v.
I’ll run mine in a sec and check
First partial test print. Everything fits. Caps need the holes slightly moved. Chamfer angle is way to shallow.
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So I checked the two I have made and even powered for 5 mins there was no noticable temperature difference on that area
10S battery at about 38V
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Do we have any ride logs yet?
I couldn’t get my Metr working with them atm, so no…
I installed mine today. I still have to work out the new UART protocol to get it talking to my dashboard/logger. What data are you looking to see?
Typical metr ride log with GPS to see how it handles real world.
I’m not familiar with metr.
Is that in danger of the cap wrapper wearing through and shorting?
2 Likes