P2DMD Editor in browser

Display Grid 128 x 32 in browser for editing

Need load:
– Convert source into grid rendered view
– Similar to Pixel RGB + brightness depending on PIN2DMD
Flip back /forth through frames

Select mechanisms:
– By colour
– By drag
– By Ctrl-click
Possibly
– Shift click for multiple drags

Colour selection:
– Colour palette
– Manual entry of RGB + brightness

Undo, array per frame per edit, same entire array

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How read EEPROMS to get frames