Search found 356 matches

by geofft
Jun 14 2020 3:01pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

Was it just a case of getting the phases correct to match the Kunteng? Yeah, it's just another motor. I'm currently using a motor angle of 246 but that may change over the coming days as I fine tune it. Hall sensors: Where the bafang controller had: Red, Black, Grey, White, Blue The s12s has: Red, ...
by geofft
Jun 14 2020 8:19am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

Hi all and thanks to everyone involved in this project. I flashed my old bmsbattery s12s with the fw and I'm using it with a bbs02 at 36v. I'm also using an hc-05 with the bluosec app. After a bit of initial fiddling, everything seems to be working quite well. Interested to see you had success usin...
by geofft
Apr 22 2020 5:34am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

i have test it yesterday with opened controller. After a short ride of 1km the big restistor gets warm. Round about 50°C The Mosfets were cool.Round about 28°C. So I think the problem at a longer rides came from the resistor. What is it for? The subject of the series resistor and the associated LM3...
by geofft
Apr 20 2020 6:21am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

When i now switch to the custom controller with the open source firmware, everything is ok, too. It turns very smooth. All functions are great, but the controller gets very hot after a round about 5 km long ride, with 25 or 45 % (Assistant Level 1-3) I have check the sequence hall sensors. They are...
by geofft
Apr 14 2020 8:58am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

Does anyone know if it's advisable to power my DCDC (used to power my Sempu torque sensor 12v and my BT module 5v) from the blue cable of the LCD display? You'll find the Sempu tqsr's are fairly power hungry devices. I originally tried powering mine by tapping the 15v internal controller supply, th...
by geofft
Nov 08 2019 6:51am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

Anyone have maybe some diagram circuit for KT kuteng sine controller? https://opensourceebikefirmware.bitbucket.io/development/EmbeddedFiles/32-BMSBattery_S06S-Kuteng_EBike_motor_controller_schematic.pdf thank you very much. i have problem and maybe someone know how to solve it. I've no experience ...
by geofft
Nov 06 2019 9:00am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

I'm currently using Xnyle's 'X4 throttle' branch which, as previously reported, works extremely well for me. There's just one small issue that's bugging me though - the calibration of the battery bars. (12s lipo, LCD3 display) It was always possible with previous versions to calibrate the battery ba...
by geofft
Oct 25 2019 5:37pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

@geofft Thanks for the report. How did you find out about that branch and how to use it so fast? Did a little bird twitter "coke" down from the stance? ;-) Nothing so sinister - simply down to me lurking on the German pedelec forum and relying on google translate. 'High Seat Cola' (google translati...
by geofft
Oct 25 2019 6:16am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

@Xnyle,

I've just tested your 'X4 throttle' branch and can confirm that, for me, it works faultlessly. Certainly better than my cobbled up torquesensor and throttle wired in parallel method...

This Torquesensor with throttle override option is perfect for my needs, many thanks for your efforts.
by geofft
Sep 16 2019 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: 4076
Views: 371719

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

That pedals will not work for the ones that do mtb or road bike, because everyone uses the clip pedals. I think the sensor on the cranks would cover almost everyone. Hmm....good point, I hadn't thought of that. That's a shame because I got a reply from them saying they come with a receiver unit tha...
by geofft
Sep 15 2019 9:39am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

Regarding those pedal sensors:- https://forehorse.en.made-in-china.com/product/SvXmFnKxMOVB/China-Wireless-Electronic-Pedal-Torque-Sensor-for-E-Bike.html ....I was rather hoping they would come with a wireless (bluetooth?) receiver unit that had 'standard' torquesensor type outputs. This way I could...
by geofft
Sep 15 2019 6:56am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

I hope someday to use the 3kw Bafang BBSHD mid drive motor drive (for my future cargobikes when I will have baby) with KT motor controller and this firmware, then, I will want to add support for the 850C and SW102 as on the TSDZ2 firmware. The Bafang BBSHD, we can't simple develop firmware for it, ...
by geofft
Sep 15 2019 2:50am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

This awesome new color lcd states that it has the communication protocol supporting the tongsheng controller.. could the firmware be loaded onto one of these? The o/s firmware is actually loaded into the controller not the display. The display you mention isn't supported by the fw and even if the c...
by geofft
Sep 06 2019 3:43am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware
Replies: 41
Views: 6621

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

The Kunteng (S12S) type controllers would have a lot of advantages and make life much easier for the developers - if the size can be reduced a little these seem like the best option. I see that PSWpower are now marketing a "20amp" version of the KT36/48svpr (6fet), I'm wondering if for the lower po...
by geofft
Sep 05 2019 4:26pm
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware
Replies: 41
Views: 6621

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

I was looking again to the S12S motor controller I have here. The case says 40A. This controller is big but the PCB uses about 2/3 of the case and I think I can cut with a metal saw the 1/3 and let the case to be smaller and lighter. S12S has the advantage that there are versions up to 72V at least...
by geofft
Sep 05 2019 9:39am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

Hi, using this firmware, can I reprogram my 12 mosfet controller to a lesser amperage? I think the version I purchased is too much for my battery, but not entirely clear yet on why. Like could I limit it using the amperage setting to 20 amps? As long as your controller is a suitable type for the fi...
by geofft
Sep 03 2019 9:17am
Forum: E-Bike Non-hub Motor Drives
Topic: Tooth engagement for BBSHD
Replies: 3
Views: 375

Re: Tooth engagement for BBSHD

Does your derailleur have an adjustment for the spring tension on the lower sprocket? If it does increasing this may help..?
by geofft
Sep 03 2019 6:31am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware
Replies: 41
Views: 6621

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

Not sure if you guys have seen these, could be a possible option....? https://forehorse.en.made-in-china.com/product/SvXmFnKxMOVB/China-Wireless-Electronic-Pedal-Torque-Sensor-for-E-Bike.html ...I'm struggling to find much info on them though. I guess they will have the same issue as the Sempu T2 se...
by geofft
Sep 02 2019 5:50am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware
Replies: 41
Views: 6621

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

Yes, by now I already think it is a dead end road due to X8M06 That's a real shame, I was really hoping you guys would turn your attention to the BBS02/HD at some point. I've got a couple of these, great drives that would be even better with some more capable firmware and a torquesensor. Would ther...
by geofft
Jun 21 2019 3:24am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

For me there are just two situations where you need throttle capability in the (current) torquesensor mode:- 1) Pulling away quickly from a standstill, 2) In awkward 'feet down' situations where you are manoeuvring at slow speed around obstructions. For instance allowing X seconds of throttle withou...
by geofft
Jun 20 2019 2:36pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

I'm using the Sempu torque sensor and i have it working, but is it possible to use a throttle in addition to this? I'm currently using a Sempu T4 torquesensor and also have a throttle connected. My method was to connect both throttle and torquesensor signal lines in parallel to the controller i/p v...
by geofft
Jun 15 2019 3:33am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

I'm using the Sempu torque sensor and i have it working, but is it possible to use a throttle in addition to this? I'm currently using a Sempu T4 torquesensor and also have a throttle connected. My method was to connect both throttle and torquesensor signal lines in parallel to the controller i/p v...
by geofft
May 24 2019 3:42am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

"Before deleting, please find out the correct phase and Hall sensor assignment on the complete system with the original firmware. This ensures that the controller in principle harmonizes with the engine." Does this simply mean finding the right cable combinations for the phase and halls, or does it...
by geofft
May 04 2019 6:39am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4076
Views: 371719

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

If you don't want so much power dissipation/heat you could replace the linear regulator (resistor/LM317 combination) with a 15V buck converter such as the CUI V7815W-500. I did this on mine (ignore the TL783 stuff, I went for the buck instead). https://endless-sphere.com/forums/viewtopic.php?t=7976...