There is an EU project with the topic of sensor citizen science initiatives, currently looking for collaboration:
We are looking for 30 COs or citizen-led initiatives, addressing issues such as Air Quality, Noise Pollution, Urban Heat, or other related topics, to work together with us in implementing, assessing and refining the tools and methodologies that our project is developing for co-creating data, knowledge and local action in an inclusive way.
Just wanted to let you know, that there is something going on (with a funding of 5M).