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  1. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I received today my Fiido Q1S. It is small as expected, still my wife can not put the full feet on the ground - my expectation is for our family to share it: me, my wife and my son with 13 years old. Both me and my wife, our first impression is positive. What I really hate is the motor noise -...
  2. casainho

    Xiaomi M365: VESC + modular DIY OpenSource electronics and software

    I decided to unlock my Xiaomi Pro 2, by using the popular VESC motor controller. Also I added my EScooter DIY simple board to interface with M365 specific sensors, and it runs the firmware that implements the EScooter logic. You can see the project page with my all technical build notes...
  3. casainho

    Automatic switch anti-spark for JBD BMS -- very cheap, DIY, OpenSource

    What: a small DIY board that automatically switches ON the popular JBD BMS, effectively switching ON the EBike/EScooter, when there is motion / vibration. Automatically switches OFF the BMS after a timeout without motion, like 20 minutes (configured). Avoids the need to install a mechanical...
  4. casainho

    Motor Controller with Customizable Electronics, easy DIY and repair OpenSource

    Project page: https://github.com/EBiCS/EV_Motor_Controller_Customizable_Electronics The target for this EV motor controller is to power small EVs like EBikes or EScooters like Xiaomi M365. Main objectives: - Possible to add custom electronics: for reusing this motor controller on different...
  5. casainho

    Fiido Q1S - 14 inches wheels, 130 km/h, dual motor 5kW + 5kW

    I am being very curious with the idea of such a cheap and small electric scooter, with similar price and size of the smallers stand-up EScooters like Xiaomi M365, but that can be very powerful and fast (after being modded), as also easy to rest on the seat for long riding distances. Sure it is...
  6. casainho

    EasyDIY OpenSource display for EVs: TSDZ2 and Bafang M500/M600 EBike motors

    Final documentation on How to build the display, here: https://opensourceebike.github.io/ ------------------------------------------------------------------------------- Because 850C / 860C display are expensive, suddenly fail and were done to not be repaired, I now have our simple, DIY...
  7. casainho

    Xiaomi M365 scooter OpenSource firmware

    I started to put some notes online to help on possible development of a OpenSource firmware for Xiaomi M365 scooter. This scooter is very popular, cheap and we can easily repair and mod it, since we final users can buy at cheap prices on Aliexpress, every part at unit. I will not be able to do...
  8. casainho

    TSDZ2 EBike wireless standard (like Specialized Turbo Levo) - OpenSource -- CONT

    delete please
  9. casainho

    TSDZ2 EBike wireless standard (like Specialized Turbo Levo) - OpenSource

    :warn: See the project page for the most updated information: https://github.com/OpenSource-EBike-firmware/TSDZ2_wireless --- The inspiration for this project is the famous Specialized Turbo Levo Ebike. There is a standard for a wireless ebike: ANT+ Light Electric Vehicle (LEV). As a...
  10. casainho

    Hackaday: "AN OPEN SOURCE EBIKE"

    Hackaday covered an ebike build with TSDZ2 running our OpenSource firmware, with title "AN OPEN SOURCE EBIKE": https://hackaday.com/2020/02/23/an-open-source-ebike/ Also seems there is a popular thread on Reddit: https://www.reddit.com/r/ebikes/comments/9pyhsh/just_completed_my_tsdz2_emtb_build/
  11. casainho

    Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware

    I just started to gather information and seems possible to develop our own firmware, that would be mainly based on our current OpenSource firmware for TSDZ2 and that implements FOC. This would also would mean support for the displays 850C color and SW102 Bluetooth, also running our OpenSource...
  12. casainho

    Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware

    Please delete as I moved to a better section on the forum. https://endless-sphere.com/forums/viewtopic.php?f=28&t=102148
  13. casainho

    Developing eLegs / exoskeleton for sports, an OpenSource project

    I am being developing OpenSource tecnhology and knowledge for electric bicycles (2008 - 2019) and many developers joined the project, making it a success (see the ebike TSDZ2 mid drive motor OpenSource firmware) -- bicycles usage did grow worldwide and will keep growing so more and more users...
  14. casainho

    Bafang SW102 Bluetooth LCD - OpenSource firmware and mobile app

    This thread is for discussion on development of OpenSource firmware and mobile for Bafang SW102 Bluetooth LCD. See all the details about the firmware, here: https://github.com/OpenSource-EBike-firmware/TSDZ2_wiki/wiki
  15. casainho

    Bafang 850C color LCD, currently working for TSDZ2 motor -- Flexible OpenSource firmware

    Finally I got Bafang 850C color LCD working!!! My plan is to make it working for the TSDZ2 mid drive motor running our flexible OpenSource firmware (see here), as I did for KT-LCD3. But I think would be great if other developers want to join and use this LCD for other motor controllers. -...
  16. casainho

    Unlock the max power of your scooter: Flexible OpenSource firmware for Kunteng KT motor controllers (0.25kW up to 5kW)

    Inmotion L8F: Denis Voloshin decided to use on his Inmotion L8F, a KT motor controller running our Flexible OpenSource firmware -- no more speed and current limits restrictions!! Read here about our Flexible OpenSource EBike motor controller firmware for BMSBattery S/Kunteng KT motor...
  17. casainho

    Improving original firmware - TongSheng TSDZ2 mid drive motor

    Wish list of improvements: - send motor/battery current to LCD - send the pedal cadence With LCD3, I started to develop the firmware for it and I then can measure battery voltage, with battery current we can see on LCD battery power being used. With pedal cadence and torque, we can see on...
  18. casainho

    KT LCD3 firmware -- Flexible OpenSource firmware for Kunteng KT-LCD3

    I started the project of OpenSource firmware for the popular BMSBattery S series controllers / Kunteng KT and TSDZ2 mid drive motor controllers. There are a few models of LCDs used on KT controllers and LCD3 seems to be the most complete, that shows for instance the motor real time power in...
  19. casainho

    TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

    Project status as of 2020.01.17: full working and tested, other developers did join and users are very happy, including online shops selling the TSDZ2 motor and 850C displays with our firmware installed. About the TSDZ2 Flexible OpenSource firmware/embedded software This OpenSource firmware...
  20. casainho

    Gen2 controllers: advantages of 1 phase current sensor??

    Anyone knows potential advantages of adding 1 phase current sensor when the controller already have 1 motor total current sensor?? I am talking about Gen2 cheap chinese controllers. Gen1 just have 1 motor total current sensor (shunt, like the KU63 -- schematic here) while Gen2 have the same 1...
  21. casainho

    Controller increases supply voltage and asks to much current

    I think experts in PWM schemes, motor controller algorithms, regen, etc, may understand what is happening. I am trying to develop OpenSource firmware for Kuteng motor controllers with STM8S105 microcontroller. With 6 steps the motor runs ok. With original firmware that implements sinewave, the...
  22. casainho

    Q85 motor BMSBattery Square Wave or SineWave??

    I am being trying to run BMSBattery Q85 motor with my firmware as 6 steps and SVM for a possible FOC. I also have BMSBattery S06S controller to run this motor. What I found (with no load): - 6 steps gives the less noise and less current (1.8A at 30V and max speed) - sinewave from S06S...
  23. casainho

    Q85 or simillar, how to rotate in both directions for regen?

    Hi. BMSBattery Q85 and others geared motors freewheel in one direction meaning I can't get regen from then, which I would like. Also I would like to try build an electric unicycle from it. Is there anyway to remove the freewheel?? if so, can you please point me to some link with information...
  24. casainho

    Hacked / owned BMSBattery S series STM8S controllers!!

    Fresh news - I just did it!! I think is the world's first time someone is able to program a ultra cheap 16€ widely available EBike controller, to make OpenSource firmware!! If you are interested, please follow the project here...
  25. casainho

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

    This OpenSource firmware/embedded software runs on the BMSBattery S/Kunteng KT motor controllers. The main advantages of this controllers are: 1. sine wave/"FOC": motors run silent and very efficient 2. cheap: starting at 20€ 3. widely available: many online shops sell them and ship to worldwide...
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