Search found 8 matches

by chris1seto
Wed 15 Dec 15 2010 1:15 pm
Forum: Space Balloon Project
Topic: Batteries
Replies: 2
Views: 2765

Re: Batteries

Are you also going to test how the battery performs in a vacuum?

Better safe than sorry.
by chris1seto
Fri 03 Dec 03 2010 12:35 pm
Forum: Space Balloon Project
Topic: Video/camera systems
Replies: 2
Views: 3107

Re: Video/camera systems

You can get AV out of the Hero rather easily. People were using them for FPV, so GoPro implemented a feature in firmware to output AV. No idea how it works, though.
by chris1seto
Fri 03 Dec 03 2010 11:40 am
Forum: Space Balloon Project
Topic: GPS Flight telemetry
Replies: 18
Views: 10139

Re: GPS Flight telemetry

http://www.sparkfun.com/products/177 is what i have coming. I think daniel has the same? I prefer this one, http://www.sparkfun.com/products/464 From the datasheet: http://files.chrisseto.com/O6e Does your GPS antenna have FOUR RUBBERS ? The only issue I have heard about with that antenna is that t...
by chris1seto
Fri 03 Dec 03 2010 2:05 am
Forum: Space Balloon Project
Topic: GPS Flight telemetry
Replies: 18
Views: 10139

Re: GPS Flight telemetry

The SUP500F, unfortunately, has dismal performance (cannot acquire at all.) Nate at SFE has posted that they no longer encourage people to use the SUP500F for the myriad of issues related to its' performance. The reason for this is unclear though but if could be a poor antenna design, or as you sug...
by chris1seto
Thu 02 Dec 02 2010 3:56 pm
Forum: Space Balloon Project
Topic: GPS Flight telemetry
Replies: 18
Views: 10139

Re: GPS Flight telemetry

Just out of curiosity, do you know of any OTHER issues the SUP500 antenna has besides the clock issue? SFE sells two versions of external antenna: * A "raw" one * A "rugged" one The rugged one is out of the question due to weight issues, so the "raw" model may be the way to go, but I'd like to see i...
by chris1seto
Thu 02 Dec 02 2010 3:30 pm
Forum: Space Balloon Project
Topic: GPS Flight telemetry
Replies: 18
Views: 10139

Re: GPS Flight telemetry

That's only confirmed for the SkyTraq units Chris, as i told you. Other companies may implement it differently (especially non-cn/hk/tw companies) Then why stray from Skytraq? I have had excellent results with my Skytraq Venus 6 devboard, fix acquisition is rapid and it's usually accurate to a few ...
by chris1seto
Thu 02 Dec 02 2010 3:12 pm
Forum: Space Balloon Project
Topic: GPS Flight telemetry
Replies: 18
Views: 10139

Re: GPS Flight telemetry

Limit is an AND not OR.

If you meet (or exceed) the speed limit AND altitude limit you will have exceeded the device's operational limit.

If you only exceed the speed OR altitude limit, you are within the device's operational limit.