With the Arduino (Flight Computer) soldered up we connected the cell phone power bank and let it log GPS and temperature for 6 hours. When we looked at the data on the SD card, it was all chinese characters - honestly! The files were messed up. This made us think that the program got goofy after running a long time. THen we checked the voltage on the power bank and it was down to 3.4 V so the Arduino got unstable. We thought we could use a new battery pack and drove to Electronic Connection (Westland). It was closed so we went to Radio Shack and bought a 8-cell AA holder and loaded it with Energizer Lithium AA batteries. WIth 8 cells it had 14 volts! We connected Dad's multimeter and measured 300 mA of current. When we took two batteries out it dropped to 10 volts and we still measured 330 mA! So we decided to only use 6 batteries. We connected it so the current still flowed because the holder needs 8 to work. We checked the battery stats at: http://data.energizer.com/PDFs/l91.pdf and it looks like we can get 10 hours out of these batteries if they stay warm, and 5 hours if they get really cold. So we need to hand warmers to do a great job! 0.3 Amps is 300 mA.Dad connected the meter wrong and blew it two times! Almost let the smoke out!
13 Comments
Hope crocker
6/22/2016 07:43:12 am
Wow! Dad blew it twice, of course. Good job, I can't wait to see how it all works when you let it fly.
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Malachi
6/24/2016 02:53:47 pm
yup... meet dad.
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6/22/2016 01:38:54 pm
Is the code for the flight computer available? I'd love to take a look at it! This looks like a super awesome project, I'm looking forward to seeing how it ends up!
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Hint: MALACHI
6/24/2016 02:52:35 pm
the code is posted on the blog. :3
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The Klouse Family.
6/22/2016 04:27:38 pm
You guys are very creative. Keep up the great work on all your experiments and projects.
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Doris Crocker
6/22/2016 05:54:32 pm
You are awesome. Let me know when youlet this go up. I would like to be there.
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Malachi
6/24/2016 02:56:06 pm
we will post the details of the launch and you can come.
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Jacob
6/22/2016 06:57:06 pm
Wow!! Cool stuff!
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Wendy Greyson
6/22/2016 07:31:55 pm
This is very interesting. Good luck on the launch!
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Malachi
6/24/2016 02:55:01 pm
yes. we need ALL the luck we can get... especially if my dad keeps making things explode. yey
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Wendy MacLennan
6/22/2016 08:28:54 pm
With all your battery experience, Ford will be crying for you to come work on their electrified powertrains! Great job! You two are "make it happen" kind of guys!
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Ezra
6/24/2016 02:58:04 pm
thank you! 8]
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Uncle Stephen
6/23/2016 07:12:27 am
Uuuuuh - can you repeat that? In English please (or at least so dummies can understand it)
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AuthorMalachi and Ezra's page where we build cool stuff and either break it, set fire to it, etc. in the name of science. Archives
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