my first board!

[junior000]

hi,

    i have designed my first board using pic 18f4550.
   
  here is the link  http://myfirstbot.blogspot.com/2008/07/my-first-board.html

     is the board ok or does it need any changes??

   

[paulstreats]

The board looks fine at fist glance, the only things that i would do are to change the crystal oscillato to a ceramic one thereby removing the need for any capacito on it. Also add a header for in circuit seial programing. Add a seial or usb output so you can coneect it to a computer while its woking, and maybe swap out the l293 for an l298 (they allow a more poweful motor so you have an opportunity to upgrade)

[airman00]

fist......oscillato ....capacito...seial.....woking,....poweful

having trouble with the R key on your keyboard paulstreats?

[Private Reid]

The board looks nice and tidy

fist......oscillato ....capacito...seial.....woking,....poweful

having trouble with the R key on your keyboard paulstreats?

Lol that happens to my "A" key so i have learnt to push slitely harder on it now 

[junior000]

hi ppl,

  thanks and its nice to hear that the board is good.i ll start my work right away
 
  well to use internal interrupts do i have to add something to the board.i mean if i have to use PWM i won't be having problem right?

[paulstreats]

having trouble with the R key on your keyboard paulstreats?

Theres a pice of grit underneath my buttons, It chooses a different key to obstruct everyday. I think its intelligent and knows exactly what its doing 

[polar bear6]

to stay on topic:
you can use a screwdriver or a knife to pry out the buttons, i had to do it with all my keys cos the keyboard was full of shenanigans.
good way to learn where which buttons are too lol.

[Admin]

i would do are to change the crystal oscillato to a ceramic one thereby removing the need for any capacito on it

The ceramic type has a higher error rate, and could cause you problems with the UART. I recommend the xtal.