Solid State Sensors? (Very Edited) Answered
What properties of an environment can be measured with solid state sensors? Specifically, I am thinking of a project requiring a suite of sensors-on-chips that can measure their immediate (dry) environment and pass the data to a control unit.
So far, I know of temperature, magnetism, radiation, acceleration and light (a camera chip).
Are there any other (reasonably priced) solid state sensors, and where could I find them (either new, or reclaimed from something else)
OK, so I thought I could be vague about my questions and then surprise everybody with a working satellite.
Turns out I'm not so clever as I thought.
I'm trying to recreate Sputnik on a tiny budget. Something that could be made by Joe Public, without having to rely on grants or Lottery funding.
Sputnik weighed nearly as much as I do, but all it did was measure temperature and pressure, then send beeps that changed if the temperature or pressure went outside a certain range. I know it has been outdone by students with CubeSats, but they still cost tens of thousands of dollars.
I thought that it should be possible to recreate (and out-do) Sputnik's capabilities on a single board, a simple programmable control chip taking in the data from a set of sensor-chips encoding it somehow, then passing it to a transmitter to be beamed to Earth.
I thought - still thinking micro-budget - that the whole thing could be cased in a short piece of sealed PVC tubing, since PVC is radio-transparent.
In my head, in fact, the satellite looks like a relay baton, but shorter.
Am I being stupidly optimistic?