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

    It seems that the power ICs are fine then. If the 82R resistor is measuring its specified value and the battery is relatively charged, then I'm afraid I don't have any other places for you to check. Something is consuming too much current to force the 5V rail lower than normal, and apparently...
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    KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

    OK, then check if the LM317 IC is working properly by applying 20v on its Vin pin and checking if: - The LM317 output reaches 13-15V - The 78L05 outputs 5V properly again (in this case, it will use the LM317 output voltage to generate 5V, as designed) You can check it in-circuit, the only thing...
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    KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

    Well, then I suggest you checking the 78L05 IC in a separate circuit, if possible, to check if the chip can generate the 5V properly.
  4. S

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

    Hi, According to the documentation, the KT-LCD5 is supported (it will show info on the screen), but as far as I know only the assist level, speed limit and lights on/off are configurable through the display on the custom firmware. The P and C parameters have to be preset using the equivalent...
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    KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

    Hi, Just my opinion about the issue, from what I know about this type of motor controller. Normally the throttle VCC pin is a little lower than 5v because there's a diode in series with the 5V rail that feeds that pin: Use the 5V Hall sensor pin (red wire) to check the voltage of the rail...
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    KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

    Right, it's roughly the same encoding when the display talks to the controller (first 6 bytes have the same function). I'll check what the controller sends to this display when I grab one with the original firmware to compare with the controller-to-lcd documentation on the link you sent, maybe...
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    KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

    Hi, Here's the hterm log file with the bytes sent by the display (hex values). Used 9600 as baud rate. EDIT: I was able to get some different patterns when changing assist levels on the display: 0C00E557299B0E - Assist lvl 0 0C01E557299A0E - Assist lvl 1 0C02E55729990E - Assist lvl 2...
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    KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)

    Hi, Does anyone else on the thread tried to use a KT-LCD1 display with this firmware? I flashed the firmware on a KT48ZWS controller, but the display shows nothing apart from the assist level. The battery indicator is showing as empty and all numbered fields shows zeroes. The controller is...
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