This is a set of drivers originally designed to support polling the Ambient Weather API. It was started back in July of 2019 but has seen quite a bit of changes over time. I have now edited this post (May 2020) to bring it in line with what the driver actually does now.
This driver allows you to connect to the Ambient Weather API using an API Key you obtain from Ambient as well as the MAC address of your Ambient Weather station. From there it will poll the API on a regular basis and make the data available to your Hubitat. Further, if you load the child driver also and enable child devices, each device will represent a sensor and contain data for that specific sensor. For example, soil sensors, pm2.5 sensors, or secondary temperature/humidity sensors.
This driver ALSO supports Ecowitt devices that will communicate directly to the Hubitat, such as the GW1000 gateway. This gateway gets the information from all the supported weather sensors, including Ambient models like the WS-2902, and provides them to the Hubitat. From there the driver parses the data and provides it, including with child devices if desired.
You can find the latest version of the main driver here, and the child driver for it as well (if you want to use the child devices):
The original driver is still available at this time, but the newer one is better in pretty much every way: