Search found 15 matches

by Iambuilderman
Apr 06 2021 12:10pm
Forum: EBike Technical
Topic: Cycle Analyst with PAS bug [solved]
Replies: 4
Views: 403

Re: Cycle Analyst with PAS bug [solved]

It is an old post, but I think the problem is still very relevant today: I have bought a Cycle Analyst V3 for the sole purpose of adding pas + torque to my 150amp sabvoton controller. However, I am noticing the same pas bug that you have. It leads to very dangerous situations where a powerful ebike ...
by Iambuilderman
Apr 06 2021 12:06am
Forum: EBike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4625
Views: 885380

Re: Cycle Analyst V3 preview and first beta release

It is a mode for tecnical terrain where the output relies on the torque input from the BB torque sensor, and not torque and rpm combined. Yes, actually more to the point I'm strongly considering in the next update that we just drop the watts/Hwatt scaling factor and have it instead be Watts/Nm. [.....
by Iambuilderman
Mar 19 2021 12:23am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

Question (“Let’s talk about FETs”): how many peak battery volts have people successfully run their Toshiba TK150E09NE at (rated 85v dss)? I am wondering, because one of my first 18 fet KT controllers came with IRFB3206GPbF rated at 60V VDSs and ran fine for years at 58.8v with regen enabled. So with...
by Iambuilderman
Mar 17 2021 8:44am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

I have several motors, all selected from AliExpress for minimal width (I want 7 speed gears as well) and maximum performance vs price ratio: 1. A 1500 watt no-brand 3T motor with ferrofluid: comes from a totAl package of motor + controller + wheel + accessories that many sellers like pasionebike sel...
by Iambuilderman
Mar 17 2021 8:00am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

Funny; I'm also leaving sabvoton for KT ;) Do you have more torque with rotor angle correction enabled (FOC) rather than pure sine? Great to share experiences then! I need to do much more testing and especially measuring with the different wave forms. I don’t know about the difference in torque yet...
by Iambuilderman
Mar 17 2021 7:30am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

[quote=Vbruun post_id=1624989 Pretty interested in this as I think my sensor is slowly failing as well. Could this pull Up voltage be changed by a simple voltage divider? That i am not sure if voltage divider would help. Can you describe how are powering the T9? Are you disconnecting the battery wi...
by Iambuilderman
Mar 17 2021 7:00am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

Well I didn’t do any transient simulations or something like that. But I figured that as all phases have their own large capacitor, they all have access to the same instantaneous 60v anyway without any time delays. So feeding the bus bars from two sides should have no effect on the timings, only a p...
by Iambuilderman
Mar 17 2021 1:34am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

Wow that's some accurate feedback. Whats the purpose of the thick blue wire? Do you recommend beefing UP the traces for my configuration? 18fet controller ; max AMP battery 50A, max motor phase 130A, 67V. The purpose of the thick blue wire is to beef up the positive (+) bus bar for the power supply...
by Iambuilderman
Mar 16 2021 4:18pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

@casainho , @stancecoke & all other contributors to this custom firmware: As I wrote in my previous posts, I just finished beefing up some square wave 18 fet kt controllers. As adding a current sensor did not magically turn them into sine wave controllers, I decided to take a leap of faith and i...
by Iambuilderman
Mar 16 2021 2:13pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

I am also in the process of upgrading a 18 fet square wave to ‘sine’ wave with custom firmware. I have just finished beefing up the traces with additional copper and lots of solder. [...] damn thats some beefy traces, mine came with metal on it already so i just beefed it up instead with solder. [....
by Iambuilderman
Mar 16 2021 1:57pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

final question is did it work straight up attaching it or did you have to flash the firmware first? This has been already asked here, and no answer, please test for us :D I am also in the process of upgrading a 18 fet square wave to ‘sine’ wave with custom firmware. I have just finished beefing up ...
by Iambuilderman
Mar 04 2021 3:05pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

final question is did it work straight up attaching it or did you have to flash the firmware first? This has been already asked here, and no answer, please test for us :D I am also in the process of upgrading a 18 fet square wave to ‘sine’ wave with custom firmware. I have just finished beefing up ...
by Iambuilderman
Sep 12 2020 11:29am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

Hi guys, I've been reading through this forum; the work everybody did is absolutely great. But I cannot find a definitive answer on the following question: what exactly do you need to modify to make a 18fet 48v kt controller with a 48v KT3 display and a 48v bluetooth dongle work at 20s 84v max? Curr...
by Iambuilderman
Sep 11 2020 9:01am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4458
Views: 435928

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

I am new to this but yesterday managed to compile the code with no issues except that I had to comment out the following lines from the makefile-windows: # @$(ENTF) *.asm # @$(ENTF) *.rel # @$(ENTF) *.lk # @$(ENTF) *.lst # @$(ENTF) *.rst # @$(ENTF) *.sym # @$(ENTF) *.cdb # @$(ENTF) *.map # @$(ENTF)...
by Iambuilderman
Sep 01 2020 3:18pm
Forum: Motor Technology
Topic: For Sabvoton sine wave motor controller users
Replies: 83
Views: 27732

Connect pas signal cables to SVMC72150

Thnx for all the info above; very useful. I bought a svmc72150 without display, not realizing that it also does not have a pedal Assist signal cable. As I will be using the sabvoton for an ebike, I really would like to Be able to use a pas sensor. My questions to you: 1: is it possible to add a pas ...