This is a fix for my other tutorial : ” DIY USB DMX INTERFACE FOR UNDER $10“, apparently there are multiple versions of this board being sold. Depending on what site you bought it you may or may not have received a working chip. For those who are stuck with a non-working chip, this is a guide on how to modify yours to allow DMX data output. Solution found by GermAndy!
Some boards still don’t work after lifting the DE/RE pins, Solution 2 fixes these boards: