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  1. X

    Making bms's VESC compatible

    This is outstanding work! My last bike with my homemade raspi ASI display died August 2023 (and that SUV nearly took me with it). Life has repeatedly gotten in the way, but since then I have planned to develop an open source ESP32 based display for VESC that can handle lisp scripts for on-demand...
  2. X

    Ampy: Open source python display/interface project for ASI controllers

    This only works when the assist mode source is set to remote/MODBUS, this is how I control assist levels with my display. Also be aware of the Features3 bitwise switch, 'throttle bypass assist level'.
  3. X

    Ampy: Open source python display/interface project for ASI controllers

    I am trying to re-upload to Mega right now. For some reason it's going at 150 bytes/s! :shock: If it remains uncooperative I'll work something else out and PM you-- host it myself, or maybe telegram if you have that. PM me or post in this thread again on the off chance I forget.
  4. X

    Ampy: Open source python display/interface project for ASI controllers

    The software part would be relatively straightforward (The display backlight slider is an example of a screen button bound to one of the Rpi GPIO outputs) For the hardware you can definitely look up guides. Changing the GUI to add a new button vs. reassigning one is slightly more involved. You...
  5. X

    Axiom: a 100kW+ motor controller

    Just want to chime in and say, I've been watching this project closely for years. I'm interested. And from what I can tell you've made outstanding design choices at every turn. Props! :bigthumb:
  6. X

    Programming ASI Bac 8000

    Real late here but I can confirm you are correct. The modbus commands used for the physical serial connection e.g. In my open source display, also work when connected to the controller via Bluetooth. They actually use the same serial port on the board (e.g. Since I poll the physical port...
  7. X

    Sur-Ron Battery upgrade

    I have a BAC8000 and a QS205. Personally I would not use less than a 4000, it really is pretty well matched for the QS205. The biggest reason I like having an 8000 over the 4000 is the phase amps-- I've got upgraded phasewires, statorade, and hubsinks on my QS205 and while 450 is a very...
  8. X

    How about a 3D printer section?

    Take another look at this mount that goes inside the Qulbix frame. It may not be immediately obvious but it does actually have complex curves. E.g. look at the extended mounts for the relays up top-- one side is further from the profile. In principle this is just like modeling half of a wing...
  9. X

    How about a 3D printer section?

    I did this for a couple of the parts I printed on my bike. I took ~80 pictures and loaded them into Agisoft Photoscan, and let it work its magic for about 16 hours to create a mesh which can be used as a guide or if its good enough quality, to subtract/boss from your model. That said if it was...
  10. X

    How about a 3D printer section?

    I'm late here, but have 3d printed; 1. Agnius NESE snapfit 18650 modules for a 3.25kWhr pack (22mOhm lead-to-lead resistance for 21s14p 30Q cells) 2. screw clamps to secure the battery, 3. internal mount that fits inside the front of a Q140 frame box for a Pi, 12v system, relays, a 4...
  11. X

    QS motor shaft wear

    So you're gonna get a new shaft when you have to replace your sprocket? :shock:
  12. X

    Ampy: Open source python display/interface project for ASI controllers

    Just pushed updated gui displaying up to 24 cells. :thumb:
  13. X

    Ampy: Open source python display/interface project for ASI controllers

    In that case single/dual port doesn't really matter with respect to the display. As long as it's a JBD bms it should work with this display. Mine from ICGOGOGO has separate charge/discharge switches but only one port. At least, it does in software. I haven't tested to see if they cut out both...
  14. X

    Ampy: Open source python display/interface project for ASI controllers

    That depends entirely on your BMS/controller. I'm bypassing BMS for controller discharge via 3x 100 amp MNEDC-100 breakers, and do use a 300-amp battery current limit for my 350-amp rated pack. With this config the BMS detects only charging current and 12v accessory discharge. Controller detects...
  15. X

    Ampy: Open source python display/interface project for ASI controllers

    If you use LFP you'll want to update the voltage:state-of-charge mapping, named 'socmap'. Since LFP have phenomenally stable voltage in the middle-80% of their SOC, like any other coulomb-counter you may have to occassionally charge or discharge them beyond that 3.3v/cell plateau to reset it and...
  16. X

    Ampy: Open source python display/interface project for ASI controllers

    Finally, my last bump and necro of this thread for an age, unless anyone has suggestions/requests. Coolest feature of latest update is the ability to hack access codes on the controller. :twisted: The other planned additions to this project like the lojack and the intelligent route-based range...
  17. X

    Need part options for building two e-bikes using the Qulbix DYI Moto FRAME KIT's

    I use a QS205 on my Q140 frame and I like it, I can push 24kW! But if you're thinking of a non-hub, LightningRod makes a fantastic bolt-on parallel drive for Q76/140 that puts out an impressive 12kW. If you don't need more power than that (and that's a lot!) then it'll handle better than a hub...
  18. X

    ASI BAC 2000/4000/8000

    That's odd. All the integer scale registers should go up to at least 32767, I double checked and indeed I can set my wheel diameter to over 32 meters. Something else is going on-- doubly odd that you're getting 0 speed with a non-zero wheel diameter. I'd want to find out why even though without...
  19. X

    ASI BAC 2000/4000/8000

    Did you also setup the wheel diameter? RE: Doust72, the "cruise" control input has miscellaneous uses but there is no cruise function, ASI has cited safety concerns :roll: Frankly those are somewhat warranted given the power some of them reach. However, it would be possible to simulate cruise...
  20. X

    New open source tool for JBD / XiaoXiang BMS

    You could use multiple serial lines and open it multiple times. Grafana uses Go, you probably could send the data to it from the python backend one way or another.
  21. X

    ASI Bac855 programming via bacdoor

    Do you have access to ASI's support site? The number of PAS pulses detected before engaging PAS assist is set with "Pedal sense delay" in Peripheral Configuration -> Pedal Speed Sensor. Increasing the ramp rate depends on your input; if you are using only PAS then you probably want to look at...
  22. X

    New open source tool for JBD / XiaoXiang BMS

    The Gitlab page has instructions but it's pretty straighforward. Just a few lines. I've just been running it as python without building, personally... :thumb: I used the backend of this package for bms integration in my ASI dash app. The code is much cleaner than my own newb python :lol: And...
  23. X

    Programming ASI Bac 8000

    What you described sounds like you're hitting either a low voltage limit, or high current limit. When one of the limits is hit the controller cuts out completely, albeit momentarily. IIRC those cutoffs don't leave a persistent 'error' on the controller, like a hall sensor fault would, but they...
  24. X

    Programming ASI Bac 8000

    I'm going to assume your cabling is fixed since it sounds like you're running now. If not or in the future it should be easy to verify what's what if you have a multimeter (if you don't have one, you won't regret getting one-- you can use it to troubleshoot your bike someday if/when something...
  25. X

    Programming ASI Bac 8000

    Hello Macmaxi, I've subscribed to this topic now-- if you describe any errors you're having, I'd be happy to help you troubleshoot. The new ASI documentation on the support page is a lot better than it was, if you follow it carefully from the beginning you shouldn't run into trouble. But there...
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