SIM300/SIM508 connect to internet via GPRS

following shows connecting TCP server ("111.223.133.252","4120") with sim508 .
here the setting (apn ,user name ,passwd) here i have used , for the Mobile operator Dialog in SL.

AT+CGATT=1
OK
AT+CGDCONT=1,"IP","ppwap"
OK
AT+CSTT="ppwap","",""
OK
AT+CIICR
OK
AT+CIFSR
10.178.1.146
AT+CIPSTATUS
OK STATE:
IP STATUS
AT+CIPSTART="TCP","111.223.133.252","4120"
OK
CONNECT OK
AT+CIPSEND
> Test1 by dilan check dilancw.blogspot.com
SEND OK
AT+CIPSEND
> TEST two
SEND OK

following screenshot of the TCP sever

This FAQ (http://www.madeeasykits.com/Faqs.asp) is very much helpful!

2D barcodes - QR codes

• this is a good web page which summarized all type of bar codes with a sample images.

(http://www.neodynamic.com/Products/BCWinC/Barcode_NET_Windows_Forms_Standards_Symbologies.aspx)

• Zxing (Zebra Crossing) a open source Java based 1D , 2D barcode decoder (http://code.google.com/p/zxing/)

this code work for me well in decoding QR-codes.

Welcome PIC24H

a good tutorial ...

http://www.engscope.com/pic24-tutorial/2-getting-started/

Orien analyzer

A good Easy software to check the functionality of the GPS.Connect GPS directly via com port and the software decodes the NMEA strings and shows data in nice graphs.

Global Positioning System: ya it's really global

0.0.0.001

PIC USB RGB LED Notifier Part 1

i have made with my first prototype on a vero board.Here are some glimpse of the prototype.

The RGB Led with (10% Blue and 10% Green)

RGB Led with (20% blue and 20% Red)

Modified VC2005 application to setup the LED pattern /mode.The sourceforge project files will be updated after code cleanup.

PIC USB RGB LED Notifier Part 0 update2

I received some RGB Leds yesterday which is ordered via ebay, $6.04 for 20pcs. I connect one led with my arduino board and had some fun .
here is the video. (http://www.youtube.com/watch?v=3hnSBgtLXRI)




I had to apply lump of hot glue and trim it on the clear LED to better color mixing of R,G,B lights.
Anxious to hook up the LEDs with the PIC .Get ready for the magic!

PIC USB RGB LED Notifier Part 0 update

i have created sourceforge project page for this and you can download the source files of PIC firmware,driver and Test App from following project url.
http://picbasedusbrgbl.sourceforge.net/

Nethu saluna...

credit should go to who have write this lyrics and
the unknown person who originally publish this lyrics in electronic format.
please click on the image to zoom it.

PIC USB RGB LED Notifier Part 0

following RGB LED notifier make me to do little experiment with pic18f2455.

http://eeegadgets.blogspot.com/2009/07/usb-mail-notifier-final-revision.html


based on this tutorial (http://pe.ece.olin.edu/ece/handouts/050201_lab1.pdf) i make
my first steps to making usb device out pic18f2455.following is the schematic i setup on the breadboard.

olin college tutorial comes with source coded for both pc/pic. you can find them here.i come up
with mplab project plus visual c++ program to control the led.

• mplab project download
• visual c++ mfc app download
  
• libusb project (which provides the driver / platform to access the usb device)
  

(seems Google blog not support store image files .i'll come up with a solution.if you need the code
drop me a mail to dilan2005atgmaildotcom)

hope to continue the story after i received my RGB LEDs.

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

playing AMT MP3

bought cheap Chinese mp3 player , which is a clone of ipod shuffle 2nd gen from ebay.( not a 1:1 clone shuffling feature is missing / there is 1:1 ipod shuffle clone in ebay) .
ebay tag is 2GB MP3 MP4 Player Mini Clip Metal Case
it cost me 6GBP .

i found following finding were useful.

• AMT_MP3 can be only formatted in FAT format (not FAT32)
• to copy mp3 file ,had to use windows media player copy device feature (simple drag and drop mp3 files through windows explorer wont work.. it gives some copy errors)
• http://mp3gain.sourceforge.net/download.php
  

On your mark! Get set ! Go!

"When the starting gun fires, it is up to each runner to decide how he will run the race. This decision will ultimately determine who will become the winners. "

remote control beetles for spying..(i guess)

i found this interesting breakthrough by university of California via hackaday
control a beetle using 6 electrodes...
control a living being like R/C helicopter

http://www.technologyreview.com/computing/22039/?nlid=1733&a=f

after long time...

black , red & white ...

why?