Sorry for butting in, are you sure the Grove Vision v2 works with 3.3v? I am having several issues with the grove vision v2 using 3.3v (grove port). With the official library I am getting errors with invoke too. I did a post a few days ago about my issue (Grove Vision AI V2 timeouts (Grove-I2C)) I bought a shield for Arduino with grove ports and I will test it tomorrow (to check if using 5v works), Thanks!
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