Pic Microcontroller Baud Rate register value calculator online

It is a must to set SPBRG value, when interfacing with UART/USART device with PIC micro controllers. 

The formula to calculate SPBRG is given below

Error can be calculated by

Where Fosc is the frequency of the crystal used in PIC micro eg: 20MHz. And Baud Rate is the desired  required baud rate.

The tool below can be used to calculate the SPBRG and Error %.

Crystal frequency : Hz KHz MHz

Desired  Baud rate : Hz KHz MHz

Is Synchronous

Result: Use calculate button

Convert laptop track pad to an external USB mouse

I have hp pavilion dv2000 laptop which was not useful as a laptop due to over heating problem.
every ones in 2 month the hard disk will crash and i need to replace the heard disk.
This was the triggering point that i thought i will tear down the laptop and make use of each and every part of the laptop.

In this article I will convert the mouse track pad of this laptop to an external USB mouse. There will be yet more post for each other components that i converted, like DVD drive to External portable drive etc.

First i disassembled the laptop using the below link.
http://tim.id.au/laptops/hp/hp%20pavilion%20dv2000.pdf

The track pad was having a model 430464-010.