eduncan911
Active Member
- Joined
- Jul 5, 2016
- Messages
- 36
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Saw the recent $25 build thread for a GPS tracker and it made me think of this keychain GPS+SMS+3G device (uses direct line-of-sight GPS). But, it needs 3G to transmit back. Where we launch, and even the local club areas, have full 4G/LTE/3G coverage.
Given, it's not $25 (you can get it cheaper on eBay from overseas for about 1/2 the price).
My daughter recently bought me a Comanche 3, 3 stage rocket. Besides it hitting around 2300 feet... A part of me wants to do all 3x 24mm motors. And a G55 in the sustainer with two F24s means it gets to... gulp... 8100 feet. (modeled in OpenRocket - will publish the file soon for others).
It's a 24mm diameter tube. So something going even 2000+ feet makes me think I'll lose it.
So here's my thought...
* Get one of those GPS keychain.
* Disassemble it, strip it down to bare and hope it fits in the 24mm tube.
* Attach it to the nose-cone/payload area, along with a tiny altimeter.
* Launch.
When on the ground, I can SMS it to get its GPS location and/or their realtime software (which I am sure is pretty bad anyways).
I was thinking more complicated setups could use an Adafruit coprocessor (about the side of two dimes side-by-side) that I could program for the accelerometer to "stop" - and once idle, activate the SOS button to send a GPS to phone like every 5 minutes. But trying to keep the weight down.
Given, it's not $25 (you can get it cheaper on eBay from overseas for about 1/2 the price).
My daughter recently bought me a Comanche 3, 3 stage rocket. Besides it hitting around 2300 feet... A part of me wants to do all 3x 24mm motors. And a G55 in the sustainer with two F24s means it gets to... gulp... 8100 feet. (modeled in OpenRocket - will publish the file soon for others).
It's a 24mm diameter tube. So something going even 2000+ feet makes me think I'll lose it.
So here's my thought...
* Get one of those GPS keychain.
* Disassemble it, strip it down to bare and hope it fits in the 24mm tube.
* Attach it to the nose-cone/payload area, along with a tiny altimeter.
* Launch.
When on the ground, I can SMS it to get its GPS location and/or their realtime software (which I am sure is pretty bad anyways).
I was thinking more complicated setups could use an Adafruit coprocessor (about the side of two dimes side-by-side) that I could program for the accelerometer to "stop" - and once idle, activate the SOS button to send a GPS to phone like every 5 minutes. But trying to keep the weight down.