Search found 121 matches

by honya96
Jan 23, 2018 5:13 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

geofft wrote:
Jan 23, 2018 4:25 am
the current draw from the battery is not steady and is constantly moving.
You can try something like this
http://s.aliexpress.com/77bUNzEf?fromSns=Copy

And measure Wh consumed in 2 minutes to get more acurate. Stable vollage input will help.
by honya96
Jan 22, 2018 3:19 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

Guys I am sorry for the misunderstanding, I know its normal to blow 60v mosfet with 14s. (I did not know its just 60v in that controller) Was just saying I cant test the big bike with 6fet. But 18fet is okay with that voltage since it has 85v mosfets.
by honya96
Jan 21, 2018 6:29 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

"With low battery and in case of load, the raw voltage readings are be below the undervoltage threshold, but this should be permissible." So I was right, he is talking about LVC but if I set to 2.5v per cell, I dont want the battery to have lower voltage EVER in its life time. So no, this should not...
by honya96
Jan 21, 2018 6:04 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

geofft wrote:
Jan 21, 2018 4:39 pm
I don't see this as any great problem, it's fairly obvious what's happening when you see it. It's just a minor issue really, maybe something that could be improved in the future when the major items in the code are working well.
I agree, actually its not even an "issue" its ok as it is.
by honya96
Jan 21, 2018 4:33 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

Github user butchja (someone that seems to had register on github just to write this issue) wrote an interesting issue about improving battery reading and optimize the power output: https://github.com/OpenSource-EBike-firmware/BMSBattery_S_controllers_firmware/issues/25 "The internal resistance sho...
by honya96
Jan 21, 2018 2:08 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

casainho wrote:
Jan 21, 2018 1:34 pm
So, you can edit on main.h file and change from 2 to 9 or maybe even a little higher value:
Thanks, I will try when I get back to testing main branch
by honya96
Jan 21, 2018 1:53 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

I dont know what to do now, my 14s battery on the big bike is blowing 60v mosfets with main branch so I dont want to test it with the 6fet again, and I am not confident enough to risk the 18fet yet. now It has 3 shunts (can the cal a,b be set for this?) otherwise stock so like 60A max (limited by wi...
by honya96
Jan 21, 2018 1:32 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

stancecoke wrote:
Jan 21, 2018 12:36 pm

can you check if the bad behavoiur occurs after longer brakes and doesn't occur, if you accelerate again, just after the motor stopped?
Perhaps you should post a video for diagnaosics.
Its ok now, seen that just a few times with wrong cal b. Thanks for the values.
by honya96
Jan 21, 2018 12:22 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

What was the right value for Battery Current cal b ? we need at least 3 pairs of values for Battery Current max and the refering current, to get a reliable value for Battery Current cal a regards stancecoke cal b set -312 edit -311 starts weird, -313 also doesnt run the motor at startup but I feel ...
by honya96
Jan 21, 2018 12:13 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

328 gives about 1,75A. sometimes the motor does not start slowly by throttle, but there is a delay and then hard pull. :shock:
338 gives 2,7-3,0
348 about 4A
by honya96
Jan 21, 2018 11:21 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

tried unplugging throttle, so its not wrong throttle min value.

First thing I noticed is better than on main branch, turning off lcd while running motor is ok. with main branch it stops the motor fast.
by honya96
Jan 21, 2018 10:56 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

@ stancecoke, can you send me the link to how to set values in osec config tool? I can translate to english and explain for beginners :wink: (like me) later you can add them to the tool. edit: so there is not that much to explain, and google translates it well. + automatic calculations can be added ...
by honya96
Jan 21, 2018 10:51 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

@stancecoke - I am getting an error I've fixed it, just a few minutes ago :wink: Please download the branch again! regards stancecoke measured 1,564v for cal B(before, the high value was the second controller), so I have set -320 after flashing the fw, motor started to run itself and power on lcd j...
by honya96
Jan 21, 2018 10:02 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

Not sure if this of any help, or how much these results relate to the rather different characteristics of your motor - but if you need any more tests done then just let me know.. :) Thanks, I think it confirms my problem.. for Casainho so he knows there is a bug. :wink: @Casainho - no need to hurry...
by honya96
Jan 21, 2018 9:19 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

stancecoke wrote:
Jan 21, 2018 8:28 am

so I have now implemented basic functions for the LCD3 in my fork.
Looks like correct power measurement also, good work :wink:

I am going to try it right now.
by honya96
Jan 21, 2018 9:16 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

Not sure if this of any help, or how much these results relate to the rather different characteristics of your motor - but if you need any more tests done then just let me know.. :) Thanks, I think it confirms my problem.. for Casainho so he knows there is a bug. :wink: @Casainho - no need to hurry...
by honya96
Jan 21, 2018 4:26 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

@geofft you can test by setting P1 at like 20 so display shows 42 and you get walking speed and no way to go faster if I am right. btw whats your board model number (like KTE-SVP5-A..) Didn't realise that the P1 setting was still active - my setting for this was 211 (16 magnets x 13.2 gear ratio). ...
by honya96
Jan 21, 2018 3:39 am
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

So, good to know that LCD is not limiting the speed. Tomorrow I can change the firmware to disable speed and current controllers, then you can put directly PWM dutycyle on the motor, using the throttle -- can't be more direct. I think it is limiting the speed somehow, when I set P1 to higher value ...
by honya96
Jan 20, 2018 3:44 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

I can say for sure that some other options than P1 P3 and C5 do some changes. I restored original values, put those 3 back as they was, and now I get no throttle at PAS 0 and much higher motor speed while still showing max 35. Edit: Tried hard but found no specific value causing this, maybe C3 or C4...
by honya96
Jan 20, 2018 3:15 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

Original fw does not limit speed without display, since it doesnt know P1 value, which pole number is set by default here?
by honya96
Jan 20, 2018 3:03 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

still same speed without display. set 72 and even 0, same. I did it all as you said :?
by honya96
Jan 20, 2018 2:44 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

thanks, but I dont want to use without lcd. I am just pointing out things which dont work as they should.. the other lcd is running at 42km/h while its like walking speed with gear motor, now running on table, waiting if it fails again. So its the communication between lcd and controller, limiting t...
by honya96
Jan 20, 2018 1:27 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

tried the other display, and throttle is 100% at pas 0! (?), blown mosfets again when turning off the lcd. weird.
First blown was mosfet 1 and 4 now its 1 and 2 counting from shunt side.
by honya96
Jan 20, 2018 12:06 pm
Forum: Motor Technology
Topic: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 1562
Views: 38262

Re: Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

On this table, https://endless-sphere.com/forums/viewtopic.php?t=16114, 1356 RPMs would be 154km/h!!! So you are not hitting the MOTOR_OVER_SPEED_ERPS of 520. The speed shown was real (like full throttle on original fw), but much higher than full throttle on this fw (I cant get rid of 35-37km/h lim...