Kategori: Ketosis detector
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Ketosense – An Arduino based ketosis detector
In this post I will go through the hardware and software of the instrument I have made. If you are curious to why I have made it, I would recommend that you start reading the other posts I have done about this project and work your way forward. Just click on Ketosis detector under categories.…
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Calibrating a Figaro TGS822 sensor, by drawing…
After consulting with the boys and girls at chemicalforums.com about how to produce an ethanol gas with a 300 ppm without having to buy a lot of fancy gear and thus finding out that it was more difficult then I initially thought I have reluctantly decided that I don’t think I will be able to pull…
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Hi, I’m Ketosense
During the weekend I have managed to put together a first very early prototype of my ”Ketosense”. It does register when a person is blowing in to the ”gas chamber” where the sensor is located and something that feels encouraging is that my wife gets significantly higher readings then me. Since I’m still a carbohydrate…
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Measured sensor characteristics MQ-3 and TGS822
The 48 hour burn in of both sensors has now been completed and I have been able to do some initial measurements of the sensors characteristics. So far both the sensors does seem to react to acetone but that is not rely surprising. The sensor resistance range (Rs) does vary a lot between them, the…
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The sensors has arrived
Yesterday the sensors I had ordered arrived, I had ordered the Figaro TGS822 and the MQ-3 from Hanwei Electronics. Since this type of sensors require a burn-in of 24-48 hours I wired them and applied some power. I had a suspicion that the sensors were actually going to be identical in function but perhaps I was wrong since they…
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Sensors
There are a bunch of different sensors out there, based on price and sensitivity I have chosen to buy two different sensors the TGS822 from Figaro sensors and the MQ-3 from HANWEI ELETRONICS. If i wasn’t on a budget I would also have ordered a WSP2110 – air polution detection since I believe that a combination with on of the TGS882…
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Expected aceton concentration
After doing some Google searching I found several different studies on the concentration of acetone in a persons breath and here I will look in to some of them. Study 1 I found a Study published in the paper ”The American Journal of clinical nutrition” where the concentration of breath acetone was measured after every hour for…
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What am I looking for?
Based on Steves posts it looks like it is actually possible to detect if a person is in a ketose state or not by analyzing that persons breath. But what are the signs of ketosis? After doing some researching on Wikipedia I concluded that what we are looking for is acetone. Properties Molecular formula C3H6O…
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Steve’s newsgroup post
Steve also published a post at a newsgroup were he presented some more details about his ”KetoFlute”. He also included a picture of his creation. Date: Jun 12 2012 21:12:02 Gang… I’ve been silent for the past week while I’ve been pushing to get a prototype ketone breathalyzer finished I’ve never worked with USB at the…
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Ketone detector – First research
This all began when I heard of Steve Gibsons work of building a ”KetoFlute” and I decided to look in to if I could build one as well. I use this blog as a note book for my initial research. From what I have found Steve talked about his ”KetoFlute” twice at the Security now! podcast.…
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