Search found 996 matches
- Thu 09 Dec 09 2010 1:39 am
- Forum: Space Balloon Project
- Topic: Cygnus Module development
- Replies: 20
- Views: 55844
Re: Cygnus Module development
In the worst case scenario, we can expect the balloon to rise to about 40km altitude and 20km lateral translation, which yields the highest distance of about 45km LOS. We know from existing tests that 500mW on 433MHz can get us out to 30km with correctly polarized antennas. Perhaps a turnstile groun...
- Wed 08 Dec 08 2010 10:03 pm
- Forum: Space Balloon Project
- Topic: Scorpion Controller Board
- Replies: 19
- Views: 58750
Re: Scorpion Controller Board
Your board is going to be quite big from the looks of it. Do you have a target size?
Daniel
Daniel
- Tue 07 Dec 07 2010 12:58 am
- Forum: Space Balloon Project
- Topic: Cygnus Module development
- Replies: 20
- Views: 55844
Re: Cygnus Module development
Cygnus will have an X-Mega A4 managing communications, and a dsPIC33F doing data logging. The current plan is to use a 1W 434MHz module as the main communications channel. This is an SPI local interface so it will need an enable line.
Daniel
Daniel
- Mon 06 Dec 06 2010 11:12 pm
- Forum: Space Balloon Project
- Topic: Cygnus Module development
- Replies: 20
- Views: 55844
Sensor list
The list of sensors are as follows:- 1. External temperature sensor (IR sensor, MLX90614 I2C) 2. Internal temperature sensor (DS18B20, TMP100/101) 3. Board level temperature sensor (DS18B20 One-Wire) 4. GPS module (LS20031 MTK) 5. Primary battery voltage sensor 6. Secondary supply voltage sensor 7. ...
- Mon 06 Dec 06 2010 10:27 pm
- Forum: Space Balloon Project
- Topic: Cygnus Module development
- Replies: 20
- Views: 55844
Cygnus Module development
The Cygnus module will be one of the two function-duplicate systems (the other being Mark's Scorpion module) making up the payload. These systems will have mostly independent functions, sensor and communication systems. This will list some of the key features planned for Cygnus:- 1. Bi-directional d...
- Mon 06 Dec 06 2010 9:57 pm
- Forum: Space Balloon Project
- Topic: RF Links
- Replies: 11
- Views: 41541
Re: RF Links
The stated -110dBm is the receive sensitivity. I think you need to find out the output power.
Daniel
Daniel
- Mon 06 Dec 06 2010 3:39 pm
- Forum: Support
- Topic: DragonOSD+ firmware upgrading
- Replies: 140
- Views: 289555
Version 16.1
Version 16.1
1. Fixed Wh calculation
2. Modified SWCHAN triggering slightly
Daniel
1. Fixed Wh calculation
2. Modified SWCHAN triggering slightly
Daniel
- Mon 06 Dec 06 2010 10:58 am
- Forum: Support
- Topic: DragonOSD+ firmware upgrading
- Replies: 140
- Views: 289555
Version 16.0
Version 16.0
1. Slight optimization to SWCHAN action
Daniel
1. Slight optimization to SWCHAN action
Daniel
- Fri 03 Dec 03 2010 6:32 pm
- Forum: Space Balloon Project
- Topic: balloon trajectory calcs
- Replies: 1
- Views: 14137
- Fri 03 Dec 03 2010 6:29 pm
- Forum: Space Balloon Project
- Topic: Adhesives
- Replies: 1
- Views: 14561
Adhesives
I'm wondering how well various adhesives (including hot melt glue) would hold up under those extreme cold conditions. Will them simply freeze and crack? If so, what kinds of adhesives are safe to use?
Daniel
Daniel