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  1. #1
    Technologist
    Join Date
    Jan 2020
    Location
    Bel Air Md
    Posts
    181

    TMC driver question SKR 1.4 Turbo

    Hello, the ongoing saga of me with my SKR 1.4 turbo, TMC 2226 drivers continues. I have installed and reinstalled my mainboard I bet 6 times I have checked wiring for breaks, and for proper connections I have updated the marlin firm wear and put a custom name (SKR 1.4 TURBO) because after I would see that in the Marlin side of the BTT TFT 3.5 screen. I have updated firm wear on the TFT screen. I have tested each and every stepper motor independently. Tested by resistance ohms. All the steppers were test both coils, so two ohm test for each 5 steppers (dual Z). All steppers measured at 0.1 ohms The Z steppers had no measurable resistance , 0.0 ohms. I used a 12 v led and tested both coils of each stepper.

    All the testing I know how to do tell me the stepper motors are good THEN WHY WHEN I TELL IT TO "HOME', I GET "HOMING FAILED MUST RESET". AND THATS WHEN MARLIN SAYS SKR 1.4 TURBO IS READY. I can heat the nozzle and the bed to desired temps.

    So is it a bum board ? OR is it the stepper DRIVERS (TMC 2226)? I was told 2226 were updated 2209's and I would be good to go with 2226.

    My question is do you think its the drivers? should I get a set of TMC 2209's ? If the board is bum then buying a set of drivers is moot point. I'm looking at either SKR 2 OR Mini E3 boards? stinks too because I also bought the DCDC board, WIFI board, and BTT writer board. useless to me if I get different board

  2. #2
    Technologist
    Join Date
    Jan 2020
    Location
    Bel Air Md
    Posts
    181
    I have also tried every serial port setting under the sun (options)

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