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@ChappIO maybe we could also pack solar cells?
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Agree with @ChappIO. Likely raspi is overkill, arduino sounds good.
If this gets off the ground, count me in! -
We would need to figure out something more energy efficient. A pi would take too much energy. An arduino would be better as said above. Also the pings doesnt have to be realtime so just hooking up a solar panel to the arduino would cut cost of the battery, the only problem i see on this would be if it got to the north pole and stayed there which would be a problem anyway. It would need something like the satalight phones to stay connected though
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Would it be feasible to use the emergency network, if coverage is an issue?
Satellite modems hit about 50€ on eBay, but perhaps we want to buy new....
As mentioned above, it doesn't have to be real-time, just vaguely frequent.... even scheduled power ons.
1) power on
2) transmit
3) power off
4) charge using solar
Repeat -
Would it be feasible to use the emergency network, if coverage is an issue?
Satellite modems hit about 50€ on eBay, but perhaps we want to buy new....
As mentioned above, it doesn't have to be real-time, just vaguely frequent.... even scheduled power ons.
1) power on
2) transmit
3) power off
4) charge using solar
Repeat -
@Player2 I dont think using the emergency frequency is even legal
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Problem wth solar is we need to weight the hardware to keep the solar panels facing sunwards....
wylliej22@gmail.com (yes I know, public email address, but I trust u guys)
http://work-sat.com/Home_files/...
http://geekprepper.org/long-range-c...
http://work-sat.com/Home_files/... -
@liammartens true.
Alternatively, use solar PTTs,(IE, what is used to track migrating birds). Those things are tiny, 5g-50g -
@Player2 cant we wrap the whole thing in solar cells perhaps? So that it will always face sunwards (if not submerged or obstructed)
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@Player2 and if it turns out to be too heavy we can replace the air by helium maybe to force it to the top of the water
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@liammartens perhaps.
Technically, we should be launching 3 or 4, to minimise damage from shipping. More of a program than a one off project.... :D -
@liammartens the titanic floated, but helium would limit oxygenation/rusting so a longer life project, if that's the aim.
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@Player2 yes, power on, transmit, power off seems best.
Solar should provide enough power for a couple of devices. -
@Jumpshot44 700ma per second of transmission....
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Summary links:
LEO comparisons
ftp://geo.ucsd.edu/pub/usend/...
HAM rf:
http://work-sat.com/Home_files/...
http://work-sat.com/Home_files/...
http://geekprepper.org/long-range-c...
Http://funcube.org.uk -
@Player2 well yea but boats float because of their empty space between hull and deck 😄 so depending on how packed the thing is going to be it will/will not float. It all depends on the density of mass
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@Jumpshot44 I was going to draw something out because I have a good idea on that 😄
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@Jumpshot44 I'd go cube. But then again, HW is not cubical.
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@liammartens great!!
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@Jumpshot44 I'd guess, but you'd want wraparound, or the ping pong balls would float and submerge the actual HW.
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Funcube.org.uk is a ham relay, so we could transmit to that, however it's only active certain hours, but you'd only need 1 or 2 transmissions a day.
What's the pricing and latency like I wonder?
https://drive.google.com/file/d/...
http://funcubedongle.com//...
http://kb5wia.blogspot.co.uk/2013/...
http://funcubedongle.com//... -
@Player2 interesting.
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One problem with the timed on/send/off cycle, you would need a watch battery to use a clock, i guess its not much of a limitation besides that the battery might die and shutdown for good. But it would make the ardunio easier to program since it would just pull the gprs signal, send location and shutdown. and the hardware would do the rest
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@Player2 would need a charging circut to prevent it from overcharging then.
I hope somebodies either writing this down or feels like going all the way back to get a list of what needs to be on this board -
@Player2 i vote slack or irc
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@jckimble lol yeah. It is written down.
Also, end of life new modem:
https://globaltelesat.co.uk/globals...
50mm×50mm
100€
20 activation
10/m plan
Vs $4000 for a birdmodem -
@Player2 yeah give me a few minutes so i can rig up an autojoin for slack
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@Player2 im working on it, setting up stacktodo right now
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@Player2 its stotv.slack.com stacktodo is being agravating and not wanting to work
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@liammartens I can - verrrry cool!
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@Jumpshot44 i think it should work out that way , to keep hardware safe and so on
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@Player2 try now, some crap needs better instrustions
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Hey @dfox, just clarifying something: you expressed an interest in this (very much active, we have a github repo and all :D) project, so are we "the devRant community project 2016" or "a project inspired by devRant"?
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@Player2 I'm not sure exactly how we'll work it but I think we'd like to sponsor it and make it an official devRant project!
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@dfox oh my god! Thank you! I've dropped you and tim invites to the slack, where we can further discuss?
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@dfox that is wonderful news! Takes this exciting project to a new level. Maybe a framework for other team projects in 2017. Thank you!
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@Jumpshot44 are u in the slack btw? I assume you are but....
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@Jumpshot44 we are somwhat kind of already working on it xD
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@Jumpshot44 if you'd like to do that, we are working on it in the slack linked above.
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@yonathanMeguira join the slack
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@SZenC join the slack linked above
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@letmecode
you said you'd follow it... thought about joining? -
@Letmecode further down the road you could help loads, we're making it all from scratch, so we'll need to make the receiving end as well.... if you joined now you'd be in a much more informed position by the time that comes around...
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@Letmecode yup. Git, figma, circuits.io, slack
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@Letmecode in the slack :p
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@Letmecode cool
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@Letmecode yup, I'll admin you if you want? We can try to cleanup a bit. Especially #specs
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@Player2, I tried, but it doesn't let me access it trough my student mail (s.mol@student.utwente.nl) nor my private mail which I used to sign up for DevRant.
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@Jumpshot44 willing to help out with costs for this
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@SZenC I'll send you an invite
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@darkcode join us on stotv.herokuapp.com
Failing that, give me your email and I'll invite you -
@SZenC get it yet?
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@Player2 Nope, there's nothing in my inbox
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@SZenC I'll try again check spam as well. I'm sending to your student email
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@Player2 Got it now! Thanks!
UPDATE: devRant Trans-Oceanic Journey Community Project
It was a mere 12 days ago that I asked the question...
Talking to Little Devie makes every day great!
I earned devie middle. Bought devie left. I came in this morning and devie right is looking at me???
This may...
devRanters do you think this is feasible as a fun/learning devRant community side-project?
Possible community side project: 'devie Stressball Trans-OceanicTrackable Voyage': So, my idea is based on the 2,000 year old concept of a message in a bottle. In fact, bottles from the Titanic were found 100 years after it hit the iceberg.
Pseudo: we pack devie into a bottle along with maybe a Raspberry Pi,GPS module, solar battery... Hopefully, it could send pings and we could track the journey. I am more a software guy than a hardware guy but I have played a bit with Pi and I know a few devs good with Pi's.I will also talk to the folds at Adafruit.
Here is an interesting paper I found in my beginning research. http://netlab.tkk.fi/u/jo/...
Also, I have seen low cost Raspberry Pi cubesats powered in outer space by solar.
Please let me know your thoughts if you think this might be possible. Also, if some of you might be interested in taking this learning journey. If we decide to try it I will purchase the hardware. Looking forward to your thoughts. Love this community!
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devie
message in a bottle
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