save 1KB of RAM
save 1KB of RAM

save one KB (4*256 bytes) by not storing the "upper half" of FFT results. Only the lower half has interesting results.

Aircoookie/WLED,Aircoookie/WLED,Aircoookie/WLED,Aircoookie/WLED,Aircoookie/WLED,Aircoookie/WLED