Hi Art, I was asked to have an evaluation for sleep apnea and asked my doctor if a = logging oximeter would be adequate for this and in my case he said it was O= K. Your needs may be different but in my case it was enough to rule out sle= ep apnea so I was able to skip any further screenings for that. I used a CO= NTEC CMS50D+ that was unly $35. If you get one, be sure to use the supplied= USB cable since it is actually a USB to serial cable even though both ends= look USB. I ran it for three nights and used a bandaid to help secure it to my finger= .. Download it after each night since it only stores one session. If you decide to try it, don't get the CMS50D. Get the CMS50D+ it's the log= ging version. Maybe combined with an audio recording this would fit enough of your desire= d criteria. Friendly regards, Bob ________________________________________ From: piclist-bounces@mit.edu on behalf of Art=20 Sent: Thursday, April 5, 2018 10:22 AM To: Microcontroller Public Subject: [EE] sleep apnea home test? I've gone through a massive change of lifestyle (diet, weight loss, realization of the myth that the traditional type doctors, FDA, USDA, American Diabetes Association, pharmaceutical industry, farming mafia, Congress, health insurance industry etc) are all lying scum. Many of my health conditions are drastically improved, just with a proper diet as specified by Functional Medicine practitioners in the first 3 weeks of my lifestyle change. I am still in recovery, but..... My sleep improved, I am curious whether I have need for my CPAP machine any longer. I need at least a screening test for sleep quality evaluation, rather than a full blown lab type sleep test. Sensors to detect breathing patterns (sound recorder), sleep paralysis (wrist or leg worn accelerometer) and O2 sat meter (finger clip on) and to data log the results overnight is good enough for my needs at this point= .. Has anyone done a PIC program for this purpose? Or maybe someone has a kit?= ? I would interpret my own results, at least as far as a 'preliminary' home test/evaluation. Any ideas? TY Art --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .