SP4CEBAR 2022-09-21 18:40 (Edited)
This oscilloscope uses hand-made characters in sprites, the sprites are flipped and repeated to make a wave,
the noise wave works differently: it's a 2x2 cell sprite that is flipped randomly
It may need some consistency with the shadows on the triangle wave and the noise, the shadows should be pointed towards the center line of the wave (that's the only way it doesn't get weird when flipped)