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RP2040 ERB support ?

2024-10-15
2024-10-22
  • Marco Gargani

    Marco Gargani - 2024-10-15

    Hello robert, i've seen your project and i love it !
    also i would like to know if you are willing to port it to other platform, because im looking for a smaller solution and right now i stumbled upon an RP2040 integrated solution with TMC2209.
    actually is used in the Enraged Carrot Feeder (a funny name to have, indeed)
    The board is the ERB v1 by fysetc. it features a lot of IO and 2 integrated drivers, in a very small for factor and a wide range of input voltages.

    can you give a look at it and tell me what you think ? Thank you!

     
  • brownrb

    brownrb - 2024-10-18

    Hi Marco

    I looked at that but it seems to be costly when compared to others, and I have found its much harder to port firmware designed for certain architecture types. When one goes down that path, there are a lot of obstacles and challenges due to differences in internal changes like timers, not to mention the use of 3rd party libraries and drivers not working on those chips.

    There are smaller options available,

    Such as Nano SuperMini (should run with minor rotator firmware changes and would require components like tmc driver chip)
    https://www.aliexpress.com/item/1005007018930312.html

    Or using ESP32 S3 (set to use Serial). Would require firmware rewrite for use as rotator project)
    https://www.aliexpress.com/item/1005006406538478.html

    Or (what i consider to be the way forward for projects using stepper motors)
    https://www.aliexpress.com/item/1005003503352263.html
    which the module fits directly onto the stepper motor and includes a small display and TMC2209 driver, This is an option right now for the myFP2ESP project. Would require firmware rewrite for use as rotator project)

    Regards
    Robert

     
  • Marco Gargani

    Marco Gargani - 2024-10-21

    i wasnt aware of the tmotor ... that would be awesome ! im ordering one to thinker with, i understand the pain to rewrite a firmware for different architecture... thank you for the inspiration!

     
  • brownrb

    brownrb - 2024-10-22

    hang on a sec,

    as I wrote above re LilyGo motor driver
    Would require firmware rewrite for use as rotator project)

    This rotator project has been written to run on an Arduino Nano. There is no support at present for any esp32 chips. That may happen at sometime but it is still a long way off even if that happens, It would be a significant amount of work to fully implement.

    At present the LilyGo its supported by the myFP2ESP32 focuser project only.

    Apologies if I had spelled that out,

    Regards
    Robert

     
  • Marco Gargani

    Marco Gargani - 2024-10-22

    yes i understand!
    Thanks anyway for your kindness

     

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