great things...

To accomplish great things, we must not only act, but also dream; not only plan,but also believe.” santiz · Anatole France

Blue Ocean Strategy

found this interesting marketing/business management concept.
Blue Ocean Strategy vs Red Ocean Strategy
http://www.youtube.com/watch?v=HJH0g-EPGDs
http://en.wikipedia.org/wiki/Blue_Ocean_Strategy

a good summery
http://www.blueoceanstrategicplanning.com/news.htm

solar charger teardown

i bought above solar charger via ebay. my curiosity lead me to tear down the solar charger. unfortunately i didn't have a camera at the time of tear down but i was able to trace down the wiring of the components inside the solar cell charger.

The functionality of the charger as follows.the solar cell charger contains a internal rechargeable battery(unbranded Li-ion with protector circuit). this battery can be charge via solar power or usb hook to a pc. this internal battery can be used to charger your mp3/mp4 player or the cell phone.

the outer case made with metal alloy.By unscrewing two screws at the one end enable to slide the solar cell plus the electronics
out of the case.


above is rough sketch of the schematic.
the open voltage of solar cell measures maximum of 5.8v @ bright sun light .the solar cell is a good candidate for outdoor self powered device such as remote weather station , water tank level monitoring or small power sensor network nodes.
As on the schematic manufactures came with a clever trick to on/off the boost converter (U1) when external jack is plug to the socket.

NAND FLASH Basics

found a webinar form micron site which cover basics of NAND flash. worth to watch it!
http://www.micron.com/products/nand/nand_webinars

warming up to play with parallax propeller

waiting for the P8X32 parallax propeller board from ebay. it has all the features which parallax demo board had other than usb connectivity.


while google the internet find following interesting project. where
a platform which show the information which extract from the internet in your tv set.
http://www.ladyada.net/make/ybox2/index.html

some interesting quotes

following are some interesting quotes found from a user called "Sapieha" from parallax forum.

• Nothing is impossible, there are only different degrees of difficulty.

• For every stupid question there is at least one intelligent answer.

• Don't guess - ask instead.

• If you don't ask you won't know.

• If your gonna construct something, make it as simple as possible yet as versatile as possible.

fpga + usb in action

uses cyclone II FPGA (EP2C5T144C7N) and a NET2272 chip.
http://lekernel.net/blog/?p=72