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I am working on a set of Visual poi (like these https://lighttoys.cz/store/vpoi/v4/) and need to upload new pictures to the controllers every now and again. Currently I use a program to convert a picture in to code, paste that code in to an Arduino sketch as a variable and upload the sketch. What other ways are there to upload a new image (preferably without re-uploading the entire sketch)? Cheers

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