i2b

http://www.slideshare.net/prajakt.raut/converting-ideas-into-businesses

ADC

http://en.wikipedia.org/wiki/Analog-to-digital_converter
http://embedded-lab.com/blog/?p=379
http://www2.tech.purdue.edu/eet/courses/referencematerial/atmel/Port_Stuff/PortA_ADC.htm

iOS - Iphone Programming

Static LIB  -  http://www.icodeblog.com/2011/04/07/creating-static-libraries-for-ios/
Sample Project - http://mobile.tutsplus.com/tutorials/iphone/learn-ios-game-development-by-example-10-projects-to-get-you-started/
                       - https://github.com/urbanairship/ios-samples

perpetual motion

mostly fake --> http://www.youtube.com/watch?feature=player_embedded&v=287qd4uI7-E

davinci design http://www.youtube.com/watch?v=r66E6QLsMLg

http://www.youtube.com/watch?feature=player_embedded&v=usBFNJSiU1g

Paint Brush

Flex Sensor Circuit - http://www.sparkfun.com/datasheets/Sensors/Flex/flex22.pdf
                                  http://sitemaker.umich.edu/me552f04/files/group3_circuit.pdf
                                  http://www.makingthings.com/teleo/teleo/cookbook/bendsensor.htm#diagram

Capacitance Touch - http://www.extremecircuits.net/2010/05/simple-capacitive-touch-sensor.html
                                  http://www.circuit-finder.com/categories/sensor/touch-sensor/page-1
                                  http://www.buildcircuit.com/modes-of-ne555-monostable-and-astable/
                                  http://www.siongboon.com/projects/2007-11-29_touch_sensor/index.htm

LED Shift Register - http://www.protostack.com/blog/2010/05/introduction-to-74hc595-shift-register-controlling-16-leds/
                                  http://www.instructables.com/id/LED-matrix-using-shift-registers/?ALLSTEPS
                                  http://www.radiolocman.com/shem/schematics.html?di=106943
                                  http://robots.freehostia.com/Software/ShiftRegister/ShiftRegister.html

                                 

nice video collection

http://m.kunoku.com/?sk=video&vid=m2isActDQnw

About.com - Basic Sci & Updates

Chemistry Experiments -http://chemistry.about.com/od/demonstrationsexperiments/u/scienceprojects.htm

All School Level Math Videos - http://video.about.com/math/?zIvb=1

All basic Education - http://physics.about.com/
                                  http://chemistry.about.com/
                                  http://space.about.com/                                           
                                  http://biology.about.com/
                                  http://archaeology.about.com/
                                  http://math.about.com/