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Junior Member
Posts: 16
Reply with quote  #1 
PLEASE IGNORE - I solved it 😉
I have spent literally all day building and rebuilding and testing things out but I am having a complete nightmare with Project 21 : Creating an LED matrix.
I have the following LED Matrix :
I have tried following the mappings in the book to no avail - random rows and columns seem to light up. 
I have searched on Google and wired it up according the following matrix : - again, random lights
I followed this guide : - this showed me which rows and columns were controlled by which pins, so I changed the wiring accordingly but again - random lights.
Can someone tell me - is the matrix in the datasheet completely different to the one specced in the book ?  Or am I just going completely mad ?
Help !  [confused]
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