To build a Weather Sat you will need a CR03 Radio Module, Power, and whatever sensors you want to fly. Here are the basics to get you going:

What Makes a Weather Sat?

Both your Ground Station and your Weather Sat have a radio, so how do they know what they're supposed to do?

Well, it all comes down to one thing: the Ground Station has a CW01 and the Weather Sat doesn't. That's it! When a CW01 WiFi Module is connected (physically) to a CR03 Radio Module, it goes into Ground Station Mode. Your Weather Sat will only have the Radio, since there's not going to be any Wi-Fi at 10,000 feet ;)

Weather Sat Recommended Setup

Chip	Description
CR03	Radio Module
PB04	Battery Module
OC01	Burn Wire Module
SW01	Weather Sensor
SL01	Light Sensor
SN01	GPS Module
SI01	IMU (Accelerometer)
MD01	Blank Chip (optional, used for structure and wiring)

NOTE: You may omit the MD01 blank xChip if you don't have one.

Assembly Information

If you are launching your Weather Sat in a frame to simulate the ThinSat enclosure, note that you will need to install the OC01 Burn Wire Module and the CR03 Radio Module on one of the edges so they face outward. Why, you ask? The antenna issues might be obvious, but the Burn Wire Module has screw terminals that need to be unobstructed so your balloon cut-down wire can be installed.

What to Expect

When assembled and powered on, the CR03 Radio Module status LED should illuminate BLUE. If you have a connection to a Ground Station, the Ground Station's CR03 Radio Module status LED should illuminate GREEN. When testing the OC01 Burn Wire Module, you should see a small red LED illuminate next to the corresponding set of screw terminals.