Picture from the edge of space – Design
(This post is a work in progress for the moment., It will be updated as my design evolves)
- 800gm Weather Balloon
- N10 Helium Canister
With some help from CURF‘s predictor looks like the balloon will travel for around
- 2 hours 30mins
- Cover about 300km (Going about 75 mph!)
This of course, is based the weather on the day, I should run the predictor a few times,
- EVA foam, its lightweight, and I can work with it to shape it into what I need.
- Paracord for the ropping
- Rasperry Pi B+
- BMP180 Weather Module, for Pressure, Alt, Temp etc…
- BO23 “Slice of Radio” as our Radio Transceiver
- MTK3339 as our GPS Receiver
This is still an on going question, though it looks like lithium AA battries, connected up to provide 5V.
|Header Pin||PI Usage||Allocated for|
|1||3.3||BMP180 – VIN|
|15||GEN||SOR – DTR|
I cant wire the GPS module in as I would like as it used the Tx/Rx pins just as the radio does. SO I am going to wire it to a USB interface and connect to it as TTL device. The model I am using just outputs string, that I can read in like a console.
I know I am going to use Habitat, I still need to get to grips with it, so far as I can see it works like this:
GPS -> Pi -> Radio -> Your laptop in the car (or a helpful station you pass) -> To the internet -> Then Habitat updates its space tracker.
Final Budget and
|UART USB Converter||Link||6|
|Breakout 40pin + cable||Link||5|