HM3301 Grove PM 2.5 displays static number

Products & Technology Grove
#21

I did not find a solution :pensive:

#22

Hi there,

Curious to know , if you repaired the solder joints?
GL :slight_smile: PJ :v:

Those looked terrible BTW… :stuck_out_tongue_closed_eyes: :-1:
did it come from the factory that way ?