lol! YOU sir, are talented and full of esoteric knowledge. How much were you paid? Were you promised a full position, at least?
Yes, I had more than a full time position and esoteric knowledge is one attribute of an education. My degree was in engineering, but I took electives in everything from Geology to Technical Writing and many more. I spent most (30+ years) with one organization and made, and invested, enough that I have retirement income that is quite enough for me and in fact greater than my last official salary. I am still learning and staying active, but with projects and interests of my own.
I graduated with an engineering degree in 1970 and am now 68 years old and "retired." I retired as a network/security engineer back in 2007. Any idea as to how much of that was taught in college in the late 1960's? Well, actually NOTHING I worked on for the last 10 and very little of what I worked on for the 10 years before that even existed when I was in college.
An example of what I mean by learning how to learn is when our upper management decided in the late 1990's that their entire infrastructure based on Token Ring was not going anywhere and I was given the job of converting everything to eithernet. I was told we had a vendor conference in about two weeks to begin picking a vendor and the equipment that would best fit our needs. I knew very little about ethernet at that time, but was able to learn enough in just two weeks to be able to filter the BS and FUD out in the meetings and ask the right questions that needed answering. I did this on my own in my "spare" time by reading everything I could find about eithernet and all the vendors products we would be looking at. I had enough "education" to know how to learn this on my own very quickly. A background in electronics, knowledge of Boolean Algebra (yea, that is REALLY how a net mask works) helped, but were background to understanding how the new "stuff" worked.
There is a difference between education and training. With education you can learn on your own, sometimes with training your your "learning" becomes obsolete with the next change in technology. It is easy to remember the difference. Which would you prefer for your teen age daughter to attend -- a sex education class or a sex training class.
For the sensors I am using the average current drain is in the microamp range except when transmitting a reading, which takes only a few milliseconds, and are several minutes apart. The transmit current is in the low milliamp range, but so brief that the average current drain is less than one milliamp.
I do have and use eneloop rechargeable batteries in many other devices, but have not tried them in these since the 1.2 volts per cell is below the 1.34 volts per cell where the alkaline cells fail. However, I plan to try some the next time I have to change the batteries. Perhaps combining the voltage booster in the original post with the rechargeable cells would be the best of both worlds.
By the way, the 90's walkman was a far better case of engineering design than these sensors!
The sensors have average current drain in the microamp range except for a brief burst of only a few milliseconds when they transmit a reading. Then they draw several milliamps for that period.
Another issue I have had is the two lesser forms of skin cancer, many Basil cell cancers, and a few Squamous cell ones. Although I have a checkup by my dermatologist twice a year, most of the time I find something that I am suspicious of for him to examine. As recently as 2013 I had a very tiny growth very near my left eye that appeared suddenly in the late fall, shortly AFTER my exam. I was suspicious that it was a skin cancer and called and got another appointment for an exam. My dermatologist did a biopsy, which was positive for Squamous, and I was able to have Mohs surgery to have it removed before the end of the year. It was still small and the surgery was much less invasive than it would have been otherwise. If I had let it go until my next check up I would have had to have reconstructive plastic surgery in addition to the Mohs surgery.
While I am not a doctor, and never wanted to be one, I am very much in favor of any device that can let me monitor my own body and then find a doctor that will listen to me.
Whether it is called STEM or STEAM one problem is that too many people think in terms of training and not education. There is a huge difference, and only when both Art and Science are taught with the goal of imparting a true and deep understanding of how the world works is it really an education.
A simple way to remember the difference is to ask yourself one question. "Would you prefer to have your teenaged daughter enrolled in a sex education class or a sex training class?"
A much better and more efficient way to accurately simulate this process can really offer a lot in many areas, not just rocket engines.