Tesla Charger alternative firmware

Topics concerning the Tesla front and rear drive unit drop-in board
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qmedia2651
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Re: Tesla Charger alternative firmware

Post by qmedia2651 »

My board v5 with commercial firmware have to reset button to start led to Blink wifi working after reset but if power off must reset again.

Any one can have any input on this matter.
Qmedia from Orlando Florida. Working on 1991 300CE Mercedes conversion project.
janosch
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Re: Tesla Charger alternative firmware

Post by janosch »

It seems that if udcspnt > udclim then udclim is ignored?

I had the following settings:
udcspnt: 403000 mV
udclim: 385V

And found my pack charged to 390V where I unplugged it.

Bug or feature? Let me know and I can update the wiki either way.
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johu
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Re: Tesla Charger alternative firmware

Post by johu »

Certainly shouldn't be that way. Strange, as I had tested that. What are your other settings?
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janosch
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Location: London, UK

Re: Tesla Charger alternative firmware

Post by janosch »

JSON with params attached, only stripped serial and pin before upload.
I will test the limit again next week.

janosch.chg1.json
(4.51 KiB) Downloaded 57 times
janosch
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Re: Tesla Charger alternative firmware

Post by janosch »

janosch wrote: Thu Nov 25, 2021 1:27 pm ... if udcspnt > udclim then udclim is ignored?
I noticed today that the inverter reads 8V higher than the charger, so I must have checked udc only on the inverter and got spooked when it read too high, but 390V < 385V + 8 so hopefully it would have terminated.

I assume the charger is a lot more accurate than the inverter to read udc?
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johu
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Re: Tesla Charger alternative firmware

Post by johu »

Yes, the Leaf inverter gives a non-linear voltage reading. So accurate around the point you calibrated and then it deviates
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