Dust density returning negative value.

[andrealmeida98]

Hi ! I don't know if you're going to responde but I tried your library and I got this values :

15:23:28.187 -> Dust Density = -73.44 ug/m3
15:23:33.189 -> Dust Density = -80.91 ug/m3
15:23:38.200 -> Dust Density = -83.40 ug/m3
15:23:43.244 -> Dust Density = -57.67 ug/m3
15:23:48.270 -> Dust Density = -81.74 ug/m3
15:23:53.255 -> Dust Density = -84.23 ug/m3
15:23:58.284 -> Dust Density = -83.40 ug/m3
15:24:03.320 -> Dust Density = -57.67 ug/m3
15:24:08.316 -> Dust Density = -57.67 ug/m3
15:24:13.336 -> Dust Density = -54.35 ug/m3
15:24:18.385 -> Dust Density = -83.40 ug/m3

My dust sensor has 4 pins , VCC, GND, AOUT, ILED. I connected AOUT to A0 and ILED to PIN2. Don't know what I'm doing wrong. Cheers !