Score - Thanks HP Laptop

The donor laptop

Lithium Ion - 10.8V at 47 Watt Hours

Charging nicely

Score

Let me get this into a 'case', extend the charging connections and get a suitable connector to get the juice to the Weatherman.

Non-Tech

I can't make a playlist long enough for these guys.  Our first R and D platform is named in honor of them.

Dead Sara

"The Weatherman v1"

More SARA

I have been watching these in the lab - MIT YouTube Lectures - MIT 16.885J Aircraft Systems Engineering - It is from 2005 and the coolest thing about this years course is it's devotion to the Space Shuttle program.  So from one of the lectures they stress backup systems and since SARA is a research platform for avionics, we will take a nod to NASA and build in a backup sensor system.  This will indeed add weight and reduce flight time, although again, for research purposes, it will provoke an upgrade to the control software.  I picked up four of these guys to play with - 3d Robotics Failsafe MUX
Basically it has two sets of four inputs, out to one set of outputs.  I don't know how yet, but I will attempt to setup a set of matching sensors to those in the Android phone, maybe even two Android phones....

SARA - Small Avionics Research Platform

Pics - http://www.facebook.com/media/set/?set=a.287687374596211.75304.100000648530684&type=1&l=eecfaaefb6

So I mentioned before about using the Android phone as the sensor for the quadrotor.  Now that the airframe is completed, mechanically, it is time to delve into using the sensors from the Android and feeding an Arduino Mega, with a 2560 microcontroller.  The electronic speed controls use a pulsed width modulation signal to control rotational direction and speed of the props.  For testing, I will remove the props and verify that the motors are spinning in the proper direction (1 and 2, which are opposite each other on the airframe, should spin in a counter clockwise direction.  3 and 4, which are opposite each other on the airframe, should spin in a clockwise direction.)  I will attach each of the four ESC wires to their own digital pin on the Mega.  This will become a piece in a three part system consisting of Guidance (getting to where I want to go), Navigation (where am i now) and finally Control (the Mega will use PWM to manipulate the propellers around the vehicles center of gravity and send her in the right direction).

Great article in the vein of avionics.

http://en.wikipedia.org/wiki/Pilot-induced_oscillation

NASA test pilots are unsung heroes, are so many people really interested in things like Selena Gomez and Justin Bieber dating?

Need to read this

http://www.hilltech.com/products/power_components/amorphous_nanocrystalline_cores.html#Nano

Robot Vision Idea

A friend of mine once showed me how layers in Photoshop worked and that is when I 'got' how cool graphical design was and also realized it's potential.  When I see a well detailed image, the shadows and colors and the perceived depth are evident.  Could we take this layered approach to building a robotic vision system?  What would be required?  First, let's scrap the limitation of the eyeball's physical size, we just aren't there yet in terms of shrinking the tech.  For now, let's think of video layers, each with it's own sensor input.  What could we use as layer data?

Layer 1: HD camera input
Layer 2: IR sensor input
Layer 3: Thermal input

Bedtime, to be continued....