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  1. guancio

    DIY Derailleur e-Shifter with Arduino Nano... need help with programming...

    I'll try to give a look to the code in the weekend
  2. guancio

    Cheap FOCer 2 (Open-source, Low-cost, VESC 6 based ESC) (v0.9 release! Beta testing still ongoing)

    May I ask why 12s? Will it work with 13s without regen?
  3. guancio

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

    Hi all, does someone know if this controller is compatible with the open source firmware? https://www.aliexpress.com/item/32972931563.html?spm=2114.12010612.8148356.6.3ed9628f3S4Fh0 I've a rear hub bafang 500w motor. Do you suggest this controller or the 1000W version? Thanks
  4. guancio

    Rear Bafang Hard Tail

    Thank you for the links
  5. guancio

    Rear Bafang Hard Tail

    Thank you for your explanation. I guess the DNP will end up soon in my basket. Any suggestion where to buy it in Europe?
  6. guancio

    BAFANG BBSxx change settings on the fly (aka 'cop button') and BBSxx communication protocol

    Have you tried to remove all logs from the serial port? During my experiments I had some trouble because I was introducing too much delay in the communication.
  7. guancio

    Rear Bafang Hard Tail

    This is the other torque arm. Also this wan is unfortunately set to pull, but I didn't see another way to put it on.
  8. guancio

    Rear Bafang Hard Tail

    Agree and unfortunately when I've bought the engine I've decided to opt for the same system of the original bike: a freewheel. It is OK to pedal up to 7.8 m/s (sorry, we are SI extremists :D ). I'm actually planning to buy a 11 rear. However, a 11T freewheel seems challenging to find and many...
  9. guancio

    Rear Bafang Hard Tail

    Thank you for you feedback, it is really really appreciated. That torque arm was a trash and it didn't fit precisely the axle. I mounted a new torque arm on the other side, I'll post a picture later today. Currently, I'm limiting max power to 20A, i.e. 1000 KW
  10. guancio

    opensource 3d printable electronic shifting?

    I totally agree that make it small, light, cheap and marketable is challenging. However, as ebikers we may be OK to compromise a lot. For instance, we all have at least 500 Wh of energy with us and we recharge the batteries quite frequently. So something that consumes 0.5/1% of my battery, that...
  11. guancio

    opensource 3d printable electronic shifting?

    I personally really appreciate your feedback. I think it is really nice that someone involved in the business (don't seem to me that Shimano is posting often in this forum :D ) spends his time to give feedback. I personally think xshifter isn't too expensive in case of single gearing system. Of...
  12. guancio

    opensource 3d printable electronic shifting?

    I agree, but I guess it uses internally some sort of mechanical means to counter the spring force, probably similar to the internal of a grip shifter. On the other side, the reduction created by the screw of a linear motor may be enough to reduce the force needed to counter the spring. I guess...
  13. guancio

    Rear Bafang Hard Tail

    Analog gauge for engine power, pas level, and battery level in progress ddX8qISCRlU
  14. guancio

    opensource 3d printable electronic shifting?

    I don't think just a stepper slider would work. If you connect the slider to the shift cable, you must keep the motor pulling to counter the spring of the derailleur. The existing DIY proposals attach the stepper directly on the derailleur and remove the derailleur spring. You still have to keep...
  15. guancio

    Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware

    Do you think VESC 4.12 is a good option? I've read that it fails with 13s (i.e. 48V) quite often
  16. guancio

    Bafang BBSHD BBS02 mid drive -- Flexible OpenSource firmware

    I've tried to contact them a couple of months ago, but I've received no answer
  17. guancio

    Rear Bafang Hard Tail

    Some small updates cheap handle grip from China tube bag suspended seat post u-locker mounted on front fork
  18. guancio

    Noob expat in Sweden attempting a first build

    Seems that there are only two versions of TSDZ2: 36V and 48/52V https://github.com/OpenSource-EBike-firmware/TSDZ2_wiki/wiki/FAQ#TSDZ2_different_versions The other difference is that there are versions with throttle and versions without throttle. My suggestion is to take the 48V throttle...
  19. guancio

    Noob expat in Sweden attempting a first build

    I forgot to remark that if you but not in Europe you should try to make the seller to pay the custom for you. Otherwise customs in Sweden will be expensive, i.e. 100 SEK + ~40%. Even if the custom is officially less than 40%, PostNord will never believe to the Chinese invoice. They will charge...
  20. guancio

    Noob expat in Sweden attempting a first build

    Hi I live in Stockholm too and I've finished my first conversion a month ago. I agree with you that buying from Green will be painfully expensive for you, since products are top quality, delivery is expensive, and you will have to pay custom. My first kit was from...
  21. guancio

    5kW Custom Hard-Tail Commuter

    Have you thought about using the german forumscontroller on you Arduino mega?
  22. guancio

    Rear Bafang Hard Tail

    For conversion I used this kit (https://www.aliexpress.com/item/32948796043.html?spm=a2g0s.9042311.0.0.6f314c4dEkPxbI): 500W rear hub from bafang cheap controller (unfortunately it uses cruise control to handle input throttle) 48V 12Ah Dolphin battery I'm using a cheap torque arm. It is...
  23. guancio

    Rear Bafang Hard Tail

    Hi all. This is my first e-bike conversion. I've started from a relatively cheap hard tail: White XC 275 Trainer 19 (https://www.xxl.se/white-xc-275-trainer-19-terrangcykel-herr/p/1143967_1_style) It has some cheap components, like Shimano Tourney MF-TZ500, 14-28T, however it is equipped with...
  24. guancio

    OpenSource bike "brain"

    For now I've decided to experiment porting your TSDZ2 firmware to Arduino (https://github.com/guancio/TSDZ2-Smart-EBike). In general I think the main part of the system (with exception of the FOC controller) can be used also as standalone brain. For now I'm just playing with some preprocessor...
  25. guancio

    OpenSource bike "brain"

    Thank you for your support. I think your firmware is an amazing product. I totally agree with the goal of supporting cheap HW. The main reason I plan to use an Arduino or similar board is to provide a platform that can be easily hacked, without requiring to modify controllers or display. I've...
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