Oregon Scientific BMI Scales with Remote Monitor

Post by **Bwired** » Mon Dec 03, 2007 12:28 am

Those reading should be fairly easy to decode from the packet. Step on the scale write down the values the display is showing, grab the 64 bits and start calculation

, Checksum is harder to get, still don't have it for my scale. Good luck on that!

Post by **Digit** » Mon Dec 03, 2007 1:02 am

Easier said than done...
So could you please tell me where the value 27.7 is hidden in this packet:

07C4B508011433D3

Just kidding [:D]

Post by **TANE** » Mon Dec 03, 2007 1:08 am

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Digit
 Easier said than done...
So could you please tell me where the value 27.7 is hidden in this packet:

07C4B508011433D3

Just kidding [:D]
<hr height="1" noshade id="quote"></blockquote id="quote">27.7 is you Fat Index [:D]

I hope mine will be under 30...few years ago was 24 [xx(]

Post by **Snelvuur** » Mon Dec 03, 2007 1:28 am

well whats a normal fat index then?.. 20? 10?

// Erik (binkey.nl)

Post by **Bwired** » Mon Dec 03, 2007 1:32 am

Are those the correct values? packet and corresponding value

Post by **Digit** » Mon Dec 03, 2007 1:48 am

Yes.
Bytes are in reverse, so not as RFReceiver would display them.
RFReceiver would have displayed something like this:
40D333140108B5C407 bits=64, if you know what i mean.

And actually, i'm not sure the number 27.7 will ever be found. Maybe it's just some number being transmitted by the scale that has to be converted to get to the 27.7. Who knows...

That's why more packets are needed to be able to understand what's going on inside this scale...

Post by **Bwired** » Mon Dec 03, 2007 2:08 am

Robert,
Yes you are right, and Oregon Scientific has a hand to it in making those kind of constructions.
For the Barometer you had first to do some calculations then add (like) 685 to it to get the result.
You are right about the readings, put them in a excel sheet and try to figure out a pattern, also log all the other readings of the panel to it.
But how to get different BMI readings? .... wait for Xmas or put everybody on the scale who is visiting you

If you have anymore readings let me know, perhaps I can help

Post by **Digit** » Mon Dec 03, 2007 2:15 am

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Bwired
 
But how to get different BMI readings? ....
<hr height="1" noshade id="quote"></blockquote id="quote">My thoughts too! Not really easy to manipulate the BMI...maybe putting one end of a resistor between your toes and let the other end touch the scale? [:D]

Post by **Snelvuur** » Mon Dec 03, 2007 4:41 am

You mean read the body fat? You have to stand on the machine with naked feet. Then it goes from the toes to the end of your foot.. electric current to get the bmi, or i'am i just not on line with the conversation..

// Erik (binkey.nl)

Post by **Bwired** » Mon Dec 03, 2007 11:26 am

Yes you are not online [:D]

Post by **TANE** » Mon Dec 03, 2007 2:40 pm

BMI Calculation

http://games.voedingscentrum.nl/body_ma ... _mass.html
http://nl.wikipedia.org/wiki/Queteletindex

Post by **Digit** » Wed Dec 05, 2007 12:22 am

A small update:
HA software updated to start supporting the GR101. Data is written to a separate file for analysis. Last measured weight is displayed online:
http://www.hekkers.net/test/Devices_Main.aspx (second row from the bottom).

Post by **Digit** » Wed Dec 05, 2007 12:25 am

One more thing:
Thanks to Bert, without whom all this would've been impossible to accomplish!

Post by **Snelvuur** » Wed Dec 05, 2007 12:30 am

sweet.. i ordered the scale allready.. thats the easy part. (sending stuff is more complex)

// Erik (binkey.nl)

Post by **Bwired** » Fri Dec 07, 2007 4:14 pm

For those who want the BWR102 for cheap in the Netherlands. Here is a sale for 39,95 euro.
http://www.vandaagleven.nl/index.php?pa ... &Itemid=26