I made a little LED Matrix and everything went wrong

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I designed this matrix 5 years ago and finally took some time to assemble and test it. All went wrong but I manage to make it work anyways. ...and it's bright!

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code: https://github.com/bitluni/sao1c

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Tools and parts (affiliate links):
Thermal Camera Infiray T2S+ /w focus lens: https://aliexpress.bitluni.net/t2splus
Preheating Station: https://aliexpress.bitluni.net/heatingStation
Low Temp Solder Paste: https://aliexpress.bitluni.net/lowTempPaste
Flux: https://aliexpress.bitluni.net/flux
Soldering Mat: https://aliexpress.bitluni.net/mat
SK6805 RGB LEDs: https://aliexpress.bitluni.net/sk6805
Clampmeter: https://amazon.bitluni.net/clamp
Tweezers: https://aliexpress.bitluni.net/tweezers

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