Trouble with Tongsheng TSDZ2B OSF + VLCD5, not working?

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Jan 17, 2025
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southport
I was told that the controller both the 36v/48v versions are the same 36v 250w + OSF -> 48v?

So I flashed a 36v 250w to 48v 250w using GitHub - emmebrusa/TSDZ2-Smart-EBike-1: TSDZ2 Open Source Firmware adapted to VLCD5-VLCD6-XH18 displays, which worked with the java configurator.

If I don't manage to fix it, it would be amazing if someone had the 48v firmware saved so I could flash it with STVP in the meanwhile.:)

When I power everything up, the VLCD5 display isn't displaying the correct battery level (1 bar, when it's @80%), throttle not working. My settings are to start up in street mode, in that mode, throttle is enabled unconditionally. So the VLCD5 only had the throttle plugged in. I did not test pedalling yet. But the battery level not showing right is worrying.

Hope someone has been through this before and managed to fix it, as I cannot find anything to help? Perhaps the speed sensors/brake sensors need connected (in settings it's not possible to enable throttle without choosing a brake feature, 3rd image) Here are my settings:

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I was told that the controller both the 36v/48v versions are the same 36v 250w + OSF -> 48v?

So I flashed a 36v 250w to 48v 250w
The controller is the same with different stock firmware, but 36V motor is different from 48V motor.
See also the configurator manual

Your motor is 36V 250W and your battery is 48V.
So your basic setting must be, for motor type is 36V and for the battery cells 13 (48V)
Max. acceleration % isn't 35 but 5 with this setting.
Battery power looks with 250W too low, better is 450W, with 13A current and almost empty battery 13x31= 403W, so you have a reasonable flat power curve with full and empty battery.
 
The controller is the same with different stock firmware, but 36V motor is different from 48V motor.
See also the configurator manual

Your motor is 36V 250W and your battery is 48V.
So your basic setting must be, for motor type is 36V and for the battery cells 13 (48V)
Max. acceleration % isn't 35 but 5 with this setting.
Battery power looks with 250W too low, better is 450W, with 13A current and almost empty battery 13x31= 403W, so you have a reasonable flat power curve with full and empty battery.
Thanks. Did everything as you suggested and still not working (at least pedals don't activate motor). Throttle works but very slow, incorrect battery level still.
 
....Did everything as you suggested and still not working (at least pedals don't activate motor). .....
imho you haven't configured the settings with the configuration manual by hand.
Are there any errors on the display if you try to pedal or use the throttle?
Without speedsensor there should be Error E08 and the motor does run only if there is no depency of the speedsensor.

I see now that you have enabled startup without pedaling and startup boost, which is a double encreasement of the motorpower at start.
In that case there is a chance on overcurrent Error E07. See for all errors the Display manual

Also you didn't do the torque calibration.
If your torque sensor is insensitive, the result will be low output of the motor
Same for throttle ADC values is advanced settings tab. These ADC values must be in line with the torque sensitivity.

Another reason for less to no motor support is starting the display with your foot on the pedal. That has influence on the torque zero calibration and made the motor less sensitive. You must start the display without any pressure on the pedal.

My advice is to setup the java configurator with the Configurator manual by hand.
You find both of them with OSF in the folder "Manuals"
 
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