BBS02b is there a RPM, PAS threshold?

[mowienenene]

Hey there,
im trying to fix the problem, that if i pedal slow, my PAS wont start the motor. Only 2 to 3 fast crank turns will start it. Current Ramp is set to 10 a/s, so I should get some acceleration after at least half a crank, as i used 0° PAS start degree. Anyone else encountered that? Firmware 1.5 is uploaded. I was seaching the code if i could find something out, but im not... Also the .xml config from the config tool doesn't show any parameters for that. Is there way to upload a firmeware with customized settings, without compiling the complete firmeware or any way to fix it? Pretty sure my pas sensor is fine, as it worked very well just before flashing and the motor is 1 Week old, maybe 80km driven. Any advice is welcome:)

[dav0000000]

These two values in cfgstore.c control that.

g_config.pas_start_delay_pulses = 5;
g_config.pas_stop_delay_x100s = 20;

[mowienenene]

Thank you for the help. That should mean that after 5/12 crank rotation pas should start, which it does not?! Also i have the feeling pas only starts "pedaling" with fast rpm, and pulses don't matter. Does it behave the same way for you, or do you get instand acceleration?

[dav0000000]

So there are 24 pulses in a revolution so 5/24. The value of 20 I'm pretty sure means max 200ms between the pulses. So a 200ms stop delay will equate to 4800ms with the standard 24 magnet pas sensor. So 4800ms for the pedal to do a rotation. That is 12.5rpm and is not fast. Are you sure you didn't change this value in the config tool?

[mowienenene]

Thats what i thought as well. I couldn't change it within the config tool, so im thinking im not doing a mistake, as the firmware number was matching with the ones daniel agreed on being okay to patch. My settings:

[EigenMania]

It's correct as @dav0000000 explained it :)

pas_stop_delay_x100s, which you can set in the GUI with PasStopDelayMilliseconds, sets the minimum time between PAS pulses in order for the controller to register that the rider is pedalling the bike. In one equation:

min_crank_rpm = 60'000 / (pas_stop_delay_x100s * 10 * 24)

Pedal slower than this RPM, and you won't get anything from the motor. Since the relationship is reciprocal, decrease pas_stop_delay_x100s to increase the minimum crank RPM (less responsive), and increase it to reduce the minimum crank RPM (more responsive).

[dav0000000]

decrease pas_stop_delay_x100s to make the startup more responsive

Don't you mean the other way. increase pas_stop_delay_x100s to make it more responsive?

[EigenMania]

Oh no I got it backwards XD Fixed the comment, thanks :)

[dav0000000]

But you have 50 milliseconds, whereas the 20 value in cfgstore means 200 milliseconds. That means you need 50rpm for the motor to start. Best set your pulses back to 5 as well, 0 sounds dangerous.

[mowienenene]

_"Stop Delay
Stop delay in milliseconds for when PAS shall disengage when no pedaling is detected.

Default: 200"_

If im right, i could not set it below 50ms.

[mowienenene]

ill check if im right before telling untruth:)

[dav0000000]

You need to go higher, not lower.

[mowienenene]

🫠 ok thank you for clearing out that misconception... thought that would set the value as low as possible so i don't get accelerated after stop paddling.