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  1. NIPSEN

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

    Hi Casainho, i have read the commit but i don't understand where you do you solved the boost bug, can you explain me ?
  2. NIPSEN

    MiniSpotA spot welder

    I prefer manual because I want to make sure I put enough pressure on it before I trigger. It is possible that I may be the one changing the type of triggering by mistake, but I would be surprised. It was quite annoying, it happened about once in 10 welds.
  3. NIPSEN

    MiniSpotA spot welder

    hi there, I have juste finish my first battery with MiniSpotA, 13S5P (LG HG2). Pure nickel strip 0.15mm x 6mm (5 meters ! :shock: ) Current time : 3ms Manual trigger. The only issue is that the MiniSpotA switch from "Manual Switch" to "Auto" by himself.
  4. NIPSEN

    Tsdz2 firmware open source adapted to vlcd5, vlcd6 and xh18

    Thanks for your feedback. :thumb:
  5. NIPSEN

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

    It's a great step forward, good work! :thumb:
  6. NIPSEN

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

    Unfortunately, I think our engine is limited by the BEMF and this limit is unbreakable. If you only reach 480erps instead of 522, is due to the fact that the engine was not running idle (load), the rpm stabilizes at the balance of forces.
  7. NIPSEN

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

    Thank you for all this valuable informations, if I understand correctly, it respects this graph quite well:
  8. NIPSEN

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

    Strange that with a PWM at 254 you only have 300W motor.
  9. NIPSEN

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

    Hi guys, About the shudder issue, I think you reach the maximum current limit, so controller start to decrease duty-cycle (every 12 cycle of 64µs if necessary), and then increase (because signal like torque pedal may be noisy, or under battery current limit) and you feel it, like micro torque...
  10. NIPSEN

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

    Oh sorry guys, it's 104 mOhms for 13S5P (8mOhm for 5P multiply by 13). :oops:
  11. NIPSEN

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

    It seems that the internal resistance of one cell is 40mOhm, as you have 13 in series, this gives a total resistance of 520mOhm.
  12. NIPSEN

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

    This is not wrong, it is an approximation, and it is as accurate as the one currently used.
  13. NIPSEN

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

    Thank you for taking the time to share these very informative documents, I am discovering an exciting field. I've read STM document (2,5 times) and your measurement, that's what I remember: _ The current in the phase is not constant during the whole PWM On, so it is interesting to measure the...
  14. NIPSEN

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

    Thank you stancecoke for your explanations, I continue to improve my understanding of the source code, I still have a little trouble distinguishing the difference between battery current and motor current, but I keep persevering. Regards, NIPSEN
  15. NIPSEN

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

    Hi, I was reading the source code, really very interesting in passing, and I found a small typo, when you calculated the pedal torque for each unit of torque measurement, you considered a gravity of 9.18 instead of 9.81m/s². This gives a value of 55 instead of 52 for #define PEDAL_TORQUE_X100...
  16. NIPSEN

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

    I'm sorry, I'm going to look like the boring guy, but that's fine. The problem is not to use an assistance factor dedicated to power for a torque. The problem is that you divide torque by voltage to calculate the setpoint current. The consequence is that the current setpoint will be...
  17. NIPSEN

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

    I don't know exactly where you want to go with this formula, except to check its relevance. Whatever it is, it is still interesting to play with the formulas, and as we can see, the ratio of the regime to tension is constant. The problem comes rather from the reading you make of it, indeed, by...
  18. NIPSEN

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

    I'm not saying you need to know the torque of the engine. I say that without pedal speed, you "must" have known the gear ratio and the engine torque constant Kt. The use of power is indeed interesting because it allows you not to have to know the gear ratio and the motor torque constant. But...
  19. NIPSEN

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

    If we consider that tsdz2 run at 4000rpm unloaded with 48V, so Kt = 83.3rpm/V And the relationship between Kv and Kt, so Kt=60/(2.pi.Kv)=0.115N.m/A Ex: for 10N.m on pedals, so 10/41,8 = 0.24N.m engine side. So I = 0.24/0.115 = 2A Ex2: for maximum current of 16A Engine torque = 0.115*16 =...
  20. NIPSEN

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

    You're explaining confirms my good reading of the code. Forgive me for expressing myself badly, I'll try to be less confused. My remark concerns the operation without pedal rotation. The pedal torque should not be transformed into motor current as you did. First of all you have to convert...
  21. NIPSEN

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

    Hi Casainho, I just read the changes you made to the code and I see that you use the pedal pair directly in case the pedals don't rotate. I think you should use this method with or without the pedals rotating. The first reason is that the motor current is directly proportional to the torque, the...
  22. NIPSEN

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

    Thanks ri53hu and Rydon for your help. :thumb:
  23. NIPSEN

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

    This picture is from LCD side 6 pins, are you sure that it is the same with wheel speed sensor side ?
  24. NIPSEN

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

    Hello, i think this picture is from the 6 pins LCD side, not from wheel speed sensor.
  25. NIPSEN

    MiniSpotA spot welder

    Absolutely.
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