Search found 8 matches

by simpletech
Jan 27 2020 4:39pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

Input voltage= 19.45V The LM317 tested output 15.48V. The 78L05 tested output 5V. 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 consu...
by simpletech
Jan 27 2020 12:38pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

Did this soldering extended legs to pcb and used external 12V input. The output pin gave 4.99V so the chip seems to be fine. 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...
by simpletech
Jan 27 2020 11:18am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

Valopallo wrote:
Jan 27 2020 9:20am
It's 4.5V without sensors connected and with sensors it drops to 4.2V.
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.
by simpletech
Jan 27 2020 8:49am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

I was thinking of flashing the firmware onto this controller: KT48ZWSRLT-LCD 48V controller with LCD5... 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...
by simpletech
Jan 26 2020 9:13pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

Measured 4.5V at the PAS and also 4.5V at the throttle. What next? 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: s06 throttle ...
by simpletech
Jan 22 2020 10:17am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

So this protocol is different to the LCD3 protocol ... 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 controlle...
by simpletech
Jan 20 2020 9:23pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

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

Can you log the bytes sent by the display with a USB-TLL converter? (Hex values, logged with hterm e.g.) 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:...
by simpletech
Jan 20 2020 8:49am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3930
Views: 349092

Re: 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 respondin...