## Choosing Sensors
Often the first step is to look for a sensor for what you're hoping to measure. Below we're collecting info on different kinds of water quality sensors, and their:
* links and documentation
Can you afford a sensor? Can it detect what you're looking for? Where can you learn more about it?
<a class="btn btn-primary" href="/notes/warren/02-16-2018/what-different-electronic-particulate-pollution-sensors-are-available-and-at-what-cost">Read more about choosing a sensor</a>
## Air sensor projects