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  1. M

    'lightest.bike' 1.7kg 1000w mid drive

    Yeah! I thought it was a great compromise between power and weight. Admittedly I've only ridden older steps bikes and bafangs, but it absolutely blew them out of the water. I would think the largest issue at play in terms of 'smoothness' would be the control methodology. As I understand it, the...
  2. M

    'lightest.bike' 1.7kg 1000w mid drive

    I think people are missing the fact that this is used by RockyMountain on their mid drives and it works very well. By far the best responsiveness of any I've tried. The biggest benefit is that by using this system you eliminate the requirement to have to install a crappy torque sensing bottom...
  3. M

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

    Ah, yes you are correct accumulated starts at Timeout, thanks for that :wink: . Changing that in the example I provided above actually helps my case and shows that it matches up with my debugging. #include <stdio.h> int PAS_is_active = 0; int ui16_time_ticks_between_pas_interrupt = 64000; int...
  4. M

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

    Ahh yes! That makes sense, remember I was getting switching noise on my ADC inputs. On a high speed Input with an interrupt this could be the issue! PAS flag must be getting set when the PWM first gets enabled I will confirm later today. Thank you for the help btw :thumb: Also, should I just...
  5. M

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

    Do you understand that it takes about 300 cycles for time_ticks to reach max as it starts at 0? That it what I am saying is the issue. Maybe someone else can debug time_ticks every loop and compare. I have many logs showing over 200 cycles for time_ticks to reach max, with the current set point...
  6. M

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

    So after about 9 hours debugging and tracing my way through the unfamiliar code, I have landed on the following as the part of the cause of the unwanted acceleration on startup. ui32_time_ticks_between_pas_interrupt_accumulated -= ui32_time_ticks_between_pas_interrupt_accumulated >> 3; // do...
  7. M

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

    So I have my 18FET KT60SVP and it weirdly the high side and low side drivers are identical to the 48v 12FET I have. Perhaps this is something we should add to the WIKI for those with >48v controllers to check if the polarity config matches their hardware as it doesn't seem to be consistent based...
  8. M

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

    Has anyone had luck in sorting the High/Low side polarity of the 60V/72V SVP's? I have just picked one up (KT60SVP) and am not wanting to pop any transistors or mosfets :)
  9. M

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

    Hi all, new here and looking for some direction. So I'm building a ~3-4kW peak BHT style mid drive direct drive ebike and am hoping to use a KT controller with this firmware, however I am not sure what kind of phase amps I could squeeze out of it. My goals would require about 120A phase Amps. I...
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