PRECEPT (https://preceptproject.info) will participate to the European Aerosol Conference (EAC) from 30 Aug. to 03 Sep. 2021 and to the International Conference on Environmental Science and Technology (CEST), from 01 to 04 Sep. 2021, by two presentations regarding the latest developments on low-cost particulate matter sensors  and their applicability in the next generation of cost-effective aerosol instruments.