Grove Display supports 3 colours: Black, White and Red ... Let's use Red to fill in as Grey ... Here's the code for converting Greyscale PNG to Black and Red Bitmaps

github.com/lupyuen/pinetime-gr

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@PINE64 talking to Grove Display ... All shall be explained in this (short) article ... Thanks for watching the 24-hour BL602 Hackathon! 🙏

lupyuen.github.io/articles/uar

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