search

danielnilsson9 / bbs-fw

Open source firmware for multiple electric bike motor controllers.
GNU General Public License v3.0
191 stars 39 forks source link

36V BBS02 Issues #178

Open emeikei opened 1 year ago

emeikei commented 1 year ago

So I'm trying this on my 36V BBS02 (STC15F2K60S2) and none of the power or speed settings make any difference.
Throttle is just on full or off. PAS is the same. No matter how the assist levels are setup, I just get full on. Global/Max Current makes no difference. No idea what current it may be drawing. Throttle/Start Current makes no difference. Just goes straight to full on. Walk mode is full speed. But I am able to change the data displayed. Event Log voltage is 0V even after calibration. But controller temperature seems good.

I have flashed the bafang 52V firmware and it seems to work fine. But then flashing this again gives the same issues. I've also tried previous version but still the same.

chjohans commented 1 year ago

I was gonna try this firmware, but since I have a 36V controller on my BBS-02B I'm hesitating since I saw this issue.

@danielnilsson9 Is there a technical reason why this would not work on a 36V BBS-02B? If not, I'll give it a go.

danielnilsson9 commented 1 year ago

I have no clue. I would expect the 36V BBS02 controller to have the same hardware as the 48V but I'm not sure.

I have only tested this on 48V controller. I'm not aware of anyone who has reported to successfully use this on. 36V version.

Please report your results if you decide to go ahead. Just make sure you have access to the original firmware if it doesn't work.

chjohans commented 1 year ago

@emeikei I was gonna try this as well, but I don't have the original firmware for my BBS-02B. You mentioned that you had recovered back to a Bafang firmware for your BBS-02. May I ask where you found that firmware file? Thanks!

geomix92 commented 1 month ago

@emeikei @chjohans I use the current custom fw version from @danielnilsson9 (1.5.0) on my BBS02 36V bought 2022 since yesterday.

According to my knowledge the 36V and 48V BBS02B controllers are hardware-wise exactly the same.

I received an error message during flashing (don't know if this is related to my controller or just a random message), see screenshot. I have also the STC15F2K60S2 controller. But it works anyway fine.

image

At the moment I use it with a 16s Li-Ion 60V battery fully charged to about 65V (which is slightly above the 63V limit of a capacitor on the BBS02B and BBSHD controllers and therefore not recommended).

Most of the time it works very well (great work from daniel) but I have some stuttering of the motor when the controller wants more than 20 Amps and the cadence is below ~70 (maybe my battery is too weak for high current). I plan to test it with a high quality 48V battery soon in the future.

Let me know if I can help somehow.