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Author Topic: Radiation Counter  (Read 17714 times)
DaddyB
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« Reply #45 on: April 27, 2010, 02:30:39 AM »

 Tongue  I just completed mounting the GM counter on its Palet.  
The palet is made from corregated plastic sign material.  
The various pieces are tied down with plastic ties.  
The batteries shown will be replaced with fresh lithium batteries.

Oh, and I did test it after mounting everything, and it still works.....   Grin

          Photo here

« Last Edit: April 27, 2010, 02:32:25 AM by DaddyB » Logged
Dan
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« Reply #46 on: April 28, 2010, 03:11:16 AM »

Looks good! I dont' think NASA could make it look THAT good!  hahah
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DaddyB
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« Reply #47 on: July 02, 2010, 11:50:20 AM »

It's a little early for the next flight, but with Larry's help on a snag, the radiation counter is a little more bullet proof and ready to fly again!
 
If the power cycles now, it will come back on recording at the last used memory location in EEprom.  I am running a test now to make sure it still stops when memory is full.  It has been running all night and is up to 2123 records and memory location 22760. This is a record every 10 seconds.  By the way, that record count is not the actual number of records on the eeprom. I cycled the power a few times last night so the record count returned to zero.  The memory location is correct.

This is on the flight battery!  Battery is down to 6.2 volts.

Remember, this is NOT rocket science!   Grin
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Kneeknaw
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« Reply #48 on: July 03, 2010, 09:32:01 PM »

Yes, I would agree that this isn't rocket science. We'll have to think balloon science. Grin   Did we get ALL of our equipment back?
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DaddyB
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« Reply #49 on: July 03, 2010, 10:19:54 PM »

We got the WHOLE thing back, even the whole balloon.  It wasn't shredded... 
We have the video and I have a DVD for you whenever we can get together...
 Undecided
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DaddyB
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« Reply #50 on: August 10, 2010, 02:21:45 AM »

I guess there is always room for improvment, even if it is a year before the next flight.
I was browsing a balloon web site today and found where they were using the RM-60 Geiger counter.
There was a diagram showing the hookup using only a 5 volt source.  I tried it and it works very well.  Now we have
eliminated 2 9volt batteries!!  The module is running from the main battery supply.
So, we have eliminated some weight, and two batteries.

            Grin
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Larry
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« Reply #51 on: August 10, 2010, 02:57:51 AM »

Sounds good.  We need every advantage we can get.  I still haven't tried out my compass yet, but will let you know when I do.
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DaddyB
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« Reply #52 on: August 28, 2010, 05:24:15 AM »

At last, I have some stuff on the WIKI site.  Feel free to edit, I'm not a very good writer...   Embarrassed
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