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  • @Spocki yes I do use a external power supply (5V 1A)
    I used a similar setting as shown on these picture:

    1. 5V connected to 5V power supply
    2. GND connected to 5V power supply + Pico GND (without connection GND also to Pico, everything is random and not stable)
    3. Data connected to Pico MOSI
    4. Clock connected to Pico SCK

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