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@allObjects
...you mean raw image... 5.22 in .pdf doc? - Is that not what @PaddeK said he struggled with? It is about 20KB and I assume there is a buffer overflow or something else that is going on that it times out. It times out because it does never reach the condition of done... (done receiving the 4 + 19200 + 2 bytes (payload plus the extra 6 bytes for admin). Lookup the flags for buffer overflow when the timeout hits... If you want to fix that, you may need to pre-declare a new, fast, contiguous buffer and place the received data into that buffer rather than do string concatenation and/or reducing the baud rate (for just that particular function). I would see that a only possible solution, if there is a solution at all for this. I'm not sure if you can build a compile function to handle that (see "compiled" for making things faster).