Software Defined Radio

I’ve been ask,  “What is Mark up to now”?

You my friends now, I’m always learning new thing. Art, poetry, electronics, computing, as a matter of fact I’ve come to the conclusion my hobby is “Learning New Things”.

Now I’m learning how to make radios out of computer code.  There is a little bit of hardware.  But it’s a very little bit. The biggest part of the radio is the computer and the software to run the math.

Do you remember imaginary numbers from high school?  Right…     i = Sqr Root of -1

Well, I’ve found a use for all that math. Try to think of all the radio signals running through your space right now.  AM radio, FM radio, TV, Cell Phone, WiFi, Blue Touth, Child monitors, CB radio, Ham Radio, Satellite signals, and more. Now think of them as sound.  All that noise.

If you digitize that noise and run it through a few math functions, you can tune in one signal.  With a little more math you can demodulate it and turn it back into sound.

I’ll post a few videos and document in the next few weeks about what I’m learning.

The big build

I have started building my quad copter. It is a 3D quad copter design. It has GPS, altimeter, three way gyros, sonic ground detector, magnetic compus, camera relay and radio telemetry.

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My PhotoDuino

I’ve started a new electronics project. Think camera meets Arduino. Photoduino is as an existing project. I’m using a Arduino mega to add a stepper to drive a dolly on a track and take pictures.

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