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  1. stancecoke

    Current Sensing

    Are you variing the time with the duty cycle? Most people only measure at the middle of the cycle, that only works up to 70-80% duty cycle. Above that, the signal gets noisy. Then you have trigger the ADC conversion at a different time. Always make sure, that you read from the two phases with...
  2. stancecoke

    Thoughts on the All-Axle cassette torque sensor

    Yes of course. The position of the motor has nothing to do with the assistance behaviour. It's just proportional to the riders effort. Each manufacturer may have his own strategy to calculate the motor power from the sensor data in detail, but the main principle of motor power = factor * human...
  3. stancecoke

    Thoughts on the All-Axle cassette torque sensor

    I did a test ride on the German Spezi fair trade this weekend. The bike was from EBS, they shared the booth with Grintech. The system is great! :cool: I've tested three different geared motors with the KCLamber cassette integrated torquesensor so far, but as I'm a fan of direct drives, the Grin...
  4. stancecoke

    FOC Angle calculation

    You have to be aware, that this is no classical FOC with Park, Clarke etc. It's just adjusting the advance angle following the theory. But it's the best, you can get of the poor controller hardware :) ?! @casainho has implemented the advance angle adjustment following the paper of Shane Colton...
  5. stancecoke

    Current Sensing

    ?! Why do you think this is noisy? You just have to do it the right way. The timing is extremely important, to get proper reading. See this ST paper. Chapter 5 shows, how to do it right...
  6. stancecoke

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

    OK, you will have to update the windows makefile I guess. We had a discussion at GitHub, if someone will maintain this project in future, but nobody was found. :( https://github.com/stancecoke/BMSBattery_S_controllers_firmware/pull/31
  7. stancecoke

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

    You don't need to use the Java tool. You can just edit the config.h file with any text editor and start the compiling and flashing by double click on the Start_Compiling.bat file. https://github.com/stancecoke/BMSBattery_S_controllers_firmware/blob/Master/Start_Compiling.bat
  8. stancecoke

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

    Can you ask JYTCon for a firmware, that controls the current with the levels, not the speed. Or make this option settable in the display, like Kunteng does with the parameter P3
  9. stancecoke

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

    Yes, I know, but they seem to be only available in the UK shop?! And they seem to have simple speed levels, not power levels. https://www.yosepower.co.uk/products/rear-e-bike-conversion-kit-36v250w-27-5-28-cassette-motor-with-36v13ah-hl1-battery?variant=43388458959068 The JYT controllers are...
  10. stancecoke

    Installing a torque sensor on my Benelli e-Misano

    there is no wrong or right, both ways are working. There is a detailed german tutorial how to compile at github and flash via the display connector. It should work even with a very old controller. open_source_firmware_fuer_lishui_-controller:compilieren_bei_github [Wiki Pedelec-Forum] If not...
  11. stancecoke

    Bird Scooter battery communication

    Bird scooters are using Lishui controllers, so it should be quite easy to make them run with the EBiCS firmware. Is there any information about the communication protocol between the battery and the controller? I've listened to the datastream, it uses a KM5S-like protocol @9600BAUD. The...
  12. stancecoke

    How do you use Grins new v6 Z9 BaseRunner with a 3rd party display?

    It won't work with Kunteng displays. ASI has native support of some UART (SWLCD and 5S) protocols, but not Kunteng. Kunteng uses the same pinout on the Higo connector, but a different protocol. The 5S protocol is the most used in chinese sytems I think., you can get displays with 5S protocol...
  13. stancecoke

    Open-source connected e-bike platform

    ?! What is the aim of your project?! Any navigation app can track your tour, no DIY bike needs a fleet management..... The only interesting thing would be the torquesensor for controllig the motor power proportional to the rider's effort, but implementing it via an unreliable Bluetooth...
  14. stancecoke

    Should we add a better marketplace or knowledgebase next?

    We have a Wiki in the German forum. I've written many articles there, but I think no one reads the Wiki. All typical newbie questions are asked and answered again and again in the forum, no one gives the hint to just read the Wiki.... 🤷‍♂️ regards stancecoke
  15. stancecoke

    Controllers that support Bafang Torque/pas cranks?

    There are many ways to attach a torque sensor to a controller. You can get Bafang controllers as spare parts from your local dealer. Kunteng, Lishui, ASI have controllers, that work with bottom bracket torque sensors out of the box. So, there is no need to use additional hardware like the CA...
  16. stancecoke

    Where can I locate the CAN bus addresses for programming the ASI Bac500/Bac800 controllers?

    There are no adresses in this range in the ASI documentation also. In the known XML files there is no adress between 511 and 1536 also: https://github.com/rberger/asi_bod/blob/80b725bc946495f8f43e556c838ae57749258fe2/ASIObjectDictionary.xml#L6002 regards stancecoke
  17. stancecoke

    Neo 650B torque sensor trouble

    https://forums.electricbikereview.com/attachments/easy-motion-electric-bike-diagnostic-flows-pdf.271/ Here is a repair manual, perhaps it helps. I found this source in Switzerland. Can it be the right one...
  18. stancecoke

    Where can I locate the CAN bus addresses for programming the ASI Bac500/Bac800 controllers?

    https://www.pedelecforum.de/forum/index.php?threads/asi-bac500-bac800-programmieren.94233/post-2114811 https://docs.google.com/spreadsheets/d/1-DX--UICXyDalAlGAg1CMVDOJJmCP5fjrjqYxZj-S04/edit?usp=sharing
  19. stancecoke

    Neo 650B torque sensor trouble

    The bike uses a Dapu motor system. http://www.dapumotors.com/Goods/index.html?t=en-us But I don't know, if the recent products are still compatible to your quite old model. I found this manual, error 3 means failure on TMM sensor. The TMM4 sensor for the rear dropout is easily available as a...
  20. stancecoke

    QS138 90H V3 Max Voltage

    The torque is always defined by the motor current, independent from speed. That's the basic physics of a motor. 🤷‍♂️ At some speed, the BEMF will get too high, so the voltage difference between BEMF and battery gets too low to push the wanted motor current through the coils. Only in this case a...
  21. stancecoke

    QS138 90H V3 Max Voltage

    What is your aim? Higher voltage only increases the maximum rpm. For more torque you'll need more motor amps. The controller defines the maximum motor current. mechanical power is proportional to motor current*rpm. regards stancecoke
  22. stancecoke

    Activate walk assist on an ASIBac500

    Hm, these documents were available some time ago, but the link doesn't work any more: https://www.pedelecforum.de/forum/index.php?threads/asi-bac500-bac800-programmieren.94233/post-2109610 But there are several XML files that contain the same information as the official documents... The risk...
  23. stancecoke

    Activate walk assist on an ASIBac500

    Can someone give me a hint. I'm struggeling with an old ASIBac500 (firmware version 5.5190). I want to drive it with a simple analogue LED Display, using the "jog" mode (register 210 Assist mode source =1). Register 138 let you choose the input for the walk mode, but I don't know, if my firmware...
  24. stancecoke

    Using rear dropout torque sensor with generic ebike controllers

    The sensor seems to be a clone of the TMM4. It has an analogue output, like a throttle normally. You can build a simple precontroller to convert the signal to be throttle input suited. An ESP is overdone for that simple task. Look at this project with a simple Attiny digispark, for example...
  25. stancecoke

    Lishui "Open Source Firmware" project / KingMeter 5S

    I never finished the mobile app, as there was absolutely no resonance on it. There is a release of an APK file, that can be installed on an android phone. But I don't know, if it still works with the recent master. https://github.com/EBiCS/EBiCS-Flutter/releases/tag/v0.1 regards stancecoke
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