Search found 389 matches

by geofft
Aug 19 2021 4:19am
Forum: EBike Non-hub Motor Drives
Topic: How to eliminate pulsing/cogging on Bafang BBS
Replies: 1
Views: 729

Re: How to eliminate pulsing/cogging on Bafang BBS

Going for a world record for thread resurrection here.. :lol: Did you ever find a fix for this? I've got one of the early BBS02's that has this pulsing issue (under PAS, throttle is ok), a slightly later version of the drive I also have doesn't have this problem. The only programming option that see...
by geofft
Aug 18 2021 3:10am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

ASSIST_LVL_AFFECTS_THROTTLE causes extra float calculations, I don't know, if geofft has activated this option. No, I don't use this option, I prefer to have full throttle available in all assist levels. Would just add that since switching to the 'Torque from X4' branch (from Xnyle's torquesensor b...
by geofft
Aug 17 2021 11:48am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

So I basically just copy/ paste /replace everything starting from line 211 of ACAsetpoint.c from the "Torque from X4" -branch to the master branch and flash with my normal parameters? Correct? I'm wondering if you couldn't simply use the 'Torque from X4' branch and just de-select the 'Tor...
by geofft
Aug 11 2021 3:51am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Hm, has anyone tried to increase the deadtime? Yes, under Casainho's instruction I played around with increasing the deadtime many moons ago when he was investigating this issue. We also played around with the motor angle to no avail. I have also tried running with 'pwm off at coast' selected but w...
by geofft
Aug 09 2021 10:21am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

My current configuration right now is the controller is placed inside a saddlebag on the downtube, so placing it outside the bag would give it a significant amount of airflow. The only problem is cable management but I'll figure that out somehow.. My solution here was to make a largish hole in the ...
by geofft
Aug 09 2021 3:16am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

I've reduced the battery amps to 10A and phase amps to 20A and the controller is still getting worryingly hot :( Im at my wits end right now It is a known fact that the OSF seems to produce more heat in the controller than the stock firmware. I think this is down to the way that the pwm is operated...
by geofft
Aug 04 2021 7:29am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Can't help with the display question I'm afraid, I think the LED880 is a Kunteng product so you may get some communication if you use the KT-LCD3 option but I wouldn't bet on it. If you only need power on and light it maybe easiest to dispense with the display altogether, just fit a by-pass plug on ...
by geofft
Aug 04 2021 3:20am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

I just wanted to double check if I can flash this firmware into my KT48ZWSRKT 18 mosfet controller with an LED 880 display since I couldn't get much info about this controller. Copied from the wiki.. Q: Can I use a KT36/48 ZWS type controller A: As the ZWS type has no phase current sensor, you can'...
by geofft
Jun 14 2021 7:33am
Forum: EBike Non-hub Motor Drives
Topic: Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware
Replies: 117
Views: 20322

Re: Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware

I have the Stages power crankset on my main road pedal bike. Man, if you guys could get those or the Garmins to work with a BSHD that would be the bomb for sure. Yes, they are expensive, costing more than the motor kit itself. But it would make an almost perfect torque sensing e-bike. I'm really su...
by geofft
May 18 2021 6:03am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

I'm having a lot of issues with a 60V+ 18fet controller, and many users here had the same issues with 18fets : resistors + LM getting VERY hot that it needs to be replaced by a DC/DC buck, controller not powering up due to wrong volt cal (the wiki is wrong for this part, as I said above). I've read...
by geofft
May 10 2021 2:47pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

I drilled a hole to the side of the casing, sealed the lm317 with kapton tape and the big resistor with heat resistant tubing from touching the screw and clamp. ...I've been running a similar arrangement on my controllers for some time now, with no issues. The end caps of of the big resistors are u...
by geofft
Apr 01 2021 11:55am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Ok. Now that I have chilled a little. Let's buy the 7th and 8th controllers for this project but please help me. Before doing anything stupid, let me get this workflow straight( and sum up what I have learned this winter): 7. If for some reason speed oscillates I may try to lower both Gain values. ...
by geofft
Mar 27 2021 9:11am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

How to find the right motor specific angle so that I don't accidentally do this same thing again?
....stancecoke describes a method on page 170 of this thread.
by geofft
Mar 27 2021 6:48am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Troubleshooting help needed: I changed hall sensors to my geared hub motor(52V battery/S06S controller). Last night I flashed S06S with OSEC and tried to find the right motor specific angle. I started the controller and the wheel started to spin on it's own without throttle. I tried different motor...
by geofft
Feb 13 2021 6:27am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

'Seriously impairs' ? Any road tests by someone to support this claim? I remember during earlier testing of the fw at one point I tested the difference between FOC on/off with the bike on a heavily loaded training roller. The difference was very noticeable, with foc 'on' the motor sounded and felt ...
by geofft
Feb 10 2021 5:25am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Quick question is this OSFW compatible with the S-KU63 controller if not what are the required modifications (maybe changing CPU?) or do i really need the KT36 or S06S controller? i'm a rookie on these subjects its for a school project :oops: The usual problem with using non sinewave controllers wi...
by geofft
Jan 13 2021 9:25am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

I do have Bafang motor with 6 magnets for speed reading. How to setup this properly so i can get real time speed read? Shall i select "external" speed sensor? How about defining six magnets? Appreciate any response. I think if you select 'External speed sensor' and then divide your wheel ...
by geofft
Jan 06 2021 4:19am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Thank you soo much, @stancecoke!! That really helped me a lot. @geofft: Funny thing: I ended up with almost the default setting, as you recommended. :) '239' brought me down to minimum measured current (1.3A) .....thought I'd give stancecoke's wheel-in-the-air-current-measurement method a try, had ...
by geofft
Jan 05 2021 5:33am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

Re: Still some help needed -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to

Esp for the angle, I can go from 1 to 255 and I find multiple 'maxima' settings where the motor sounds smooth and fast running (all tested w/o load -> wheel in the air). However, at the fasted & smoothest setting (around a value of '15'), the current draw (as per BluOSEC App) goes unproportiona...
by geofft
Dec 19 2020 3:57am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

How does the torque from x4 branch work differently? I can't really find any documentation on it. I run the a torque sensor, so by the sound of things I could use it. The 'torque from x4' branch allows you to run both throttle and torque sensor together by connecting the throttle as normal and the ...
by geofft
Dec 17 2020 3:37pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Also: Is this known freezing problem only happening when one actively uses the BluOSEC app (i.e. while there is a Bluetooth connection)? I was getting what I think was the freezing problem when using Xnyle's 'x4throttle' branch. This was with the lcd3 display i.e. not using the BluOSEC app. The mot...
by geofft
Dec 06 2020 4:55am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Looking to upgrade my controller to a KT. Is there a recommended place to buy from? I see bmsbattery linked. Are there other places as well? For 6-fet versions (and other accessories) I've also used PSWpower:- http://www.pswpower.com/ven.php?cargo-s220052 ...they've been a reliable supplier for me ...
by geofft
Nov 26 2020 9:37am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

How much current capabilities does these S06S controller wires have to have for the controller to work properly; Throttle: +5V, GND, signal Brake: +5V, GND, signal HALL: +5V, GND, white, green, yellow, blue -signals PAS: +5V, GND, signal Display/bluetooth: +5V, GND, RX, DX, blue I'm planning to use...
by geofft
Nov 03 2020 2:39pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Hello guys, I'm new here. I compiled and flashed the firmware on a KT36/48SVPRD-HRD01 controller. I get no error at compiling (with proven setting: THR-PAS,KT36-48svpr,12s,26inch,Q128h + Diagnostics), Just a couple of things worth mentioning with those settings. The throttle min/max numbers were fo...
by geofft
Oct 18 2020 2:59am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4590
Views: 475841

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

Well done! It sometimes takes a bit of patience and experiment to get it to run how you want, but it's worth the effort in the end.
Like you say the feel of a torquesensor bike is quite special, getting back on my BBS02 equipped bike just doesn't feel the same any more.... :(