Endless Sphere

Hi, Just received Erider T9 torq sensor to be later added for my Kunteng 6fet controller. Because the rumours of quality issues and broken sensors i did following founding’s. 1. Cadence output has different topology than regular PAS sensor. T9 Cad output is sourcing 4.1 volt at high state and groun...

[quote=Vbruun post_id=1624989 Pretty interested in this as I think my sensor is slowly failing as well. Could this pull Up voltage be changed by a simple voltage divider? [/quote] That i am not sure if voltage divider would help. Can you describe how are powering the T9? Are you disconnecting the ba...

I don't know, why the ERider T9 / T13 torquesensor always dies on a Kunteng controller. One guy in the german forum wasted three sensors this way. Now he uses a Lishui Controller and everything works well :shock: Could it be due to different pull-up voltage on PAS pin? Measured voltage at free floa...

I wanted to share two small e-bike conversion with Open Firmware recently acomplished to my family and friends: 1. 24inch e-MTB with Q85 motor, and Sempu T4 IMG_20210109_183319.jpg 2. 20inch with bafang 020.350 DC and eRider T9 IMG20210123181227-1.jpg Both have reduced battery current to 7A and Phas...

motor spin all time at very low speed Nice to see the motor spinning, this is a great sucess already! Congratulations! It seems that the battery-current measuring is not stable fast enough at startup. We already have build in a pause in the autozero procedure in the adc_init(void) function, but it ...

Of course it works to remove the additional 5 magnets, but it takes at least 2h to disassemble the motor, remove the magnets and reassemble the motor. It only takes 2s to type "*6" :lol: regards stancecoke Then it is really faster, although i do not know where is the main code :oops:

From the other side i heard some poeple remove the excessive (five) speed magnets from the motor and then it works. Are you crazy? :shock: You just have to add a "*6" to one line of code ! ACAcommons.c line 98: ui32_speed_sensor_rpks_accumulated += (((uint32_t)ui16_pwm_cycles_second)*1000...

I think if you select 'External speed sensor' and then divide your wheel circumference figure by 6 (in the configurator) it may work. I say 'may' work, but there might be a problem. Your speed pulses will be arriving at the controller at 6 times the usual rate and they may get blocked by the firmwa...

I do have Bafang motor with 6 magnets for speed reading. How to setup this properly so i can get real time speed read? Shall i select "external" speed sensor? How about defining six magnets? Appreciate any response.

Okay that explains a lot! So it seems i need to fine tune the Torque miltiplier.

No, just the direction detection via the PAS fraction is irrelvant. else { // torque sensor mode float_temp = (float) ui16_sum_torque; float_temp *= ((float) ui8_assist_percent_actual / 100.0); if (flt_torquesensorCalibration != 0.0) { float_temp *= flt_torquesensorCalibration / ((float) ui16_time_...

The PAS threshold is irrelevant in torque sensor mode. It's not used in the code. regards stancecoke Okay but then is it PAS irrelevant at all. I though cadence is affecting the power calculation ? so then i am looking for the reson why sometimes the motor does not star from idle. It may takie few ...

I have set the PAS threshold on 1.5 for Sempu T4 with 48pulses per rotation. Is it correct given the readouts for forward rotation in BlueOsec (bakward is just zero):? PAS status - PAS fraction 2,44 - 8/3 2,4 - 9/3 2,4 - 9/3 1 - 7/4 1,68 - 5/3 2,58 - 7/3 1,66 - 8/4 1,77 - 5/3 2,48 - 7/3 1,65 - 7/4 1...

Just run first test. It works just great. I have set the Gain P on 0.10 and Gain I on 0.02. Are those perimeters also responsible for the speed of power decrease?
The lower values seemed to sluggish and we need some reactivity for offroad riding. Tomorrow next test

I read the manual but cannot clearly determine which Ramp schould i define and what value pit there. The ramp settings are for "torque-simulation" mode only. With a torque-sensor, they have no function. For slower respond you have to reduce the Gain P and Gain I settings of the PI-control...

I am flashing the firmware for junior MTB on 24wheels with AKM 85 motor with torque sensor. What i would to achieve is kimś od soft start do the motor powr does increase over 0.5 to 1 sec. I read the manual but cannot clearly determine which Ramp schould i define and what value pit there. Can you he...

I have not found na answer anywhere do here the very basic(dumny ) question:
When flashing the firmware the controller schould or schould not be connected:
1. To a battery?
2. To other peripherals like LCD, Pas etc.?
3. Powered on or off?

stancecoke wrote: ↑

Sep 25 2020 1:55am

szkuba wrote: ↑

Sep 25 2020 12:50am

Does anyone knows what is the EN pin for?

This is the enable pin. It has to be on TTL high to enable the 12V output.
You can just short it to the VIN+ pad to enable the output permanently.

regards
stancecoke

Thanks

The dynamic assist mode: what is the assit variation here? Sorry, this feature was added by @Xnyle. I have no idea, what it does, I don't use it. regards stancecoke Not sure if you've seen this, but there is some reference to it in the wiki, copied below:- Ride Options: Dynamic Assist Level: Using ...

because I was trying to pore over every single ligne of the program to figure out where I had to change the code.... I've implemented the walk assist in the new branch "Walk_Assist": https://github.com/stancecoke/BMSBattery_S_controllers_firmware/tree/Walk_Assist It's just quick and dirty...

stancecoke wrote: ↑

May 19 2020 2:09am

No. If you want to use the LCD Display you have to adapt most settings in the Java-Tool. You can use the LCD for the basic settings max speed and wheel size.

Thanks, so the PAS levels work as well i suppose? Would the walk assist and lights activation work as well?

I havent found the answer in the docs so the basic question:

would the firmware work with both the LCD4 and bluetooth adapter?

I would use it to program/monitor the perimeters but when released the bike to 10y kid i would only let him use the LCD

Is it possible?

Hello folks, has are your xionga motors afer some time?
I do plan to use mini hub motor for the 10year kid on his 24inch MTB.
Would you recomend XIONGA or rather Q100?
Loking forward for your reply

silentguy wrote: ↑

Mar 03 2020 2:11pm

My first test drive with the Sempu T4 torque meter

https://youtu.be/PPevxzOZn8M


More videos are here.


https://m.youtube.com/channel/UC6iR085o ... ame=iossmf

Nice to see it works for you btw i do have 5 assist levels.

1. Dynamic assist level? You have to ask Xnyle for that feature :-) 2. Speed influences Tq Sensor? If you activate this, the assist factor increases with the speed (for lazy commuting :-)) 3. I was wandering how the cadence is being calculated? The number of timertics (@16kHz) between two PAS inter...