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Author Topic: my first board!  (Read 2258 times)

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Offline junior000Topic starter

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my first board!
« on: July 13, 2008, 12:47:27 PM »
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??

   
view my tutorials at


www.myfirstbot.blogspot.com

Offline paulstreats

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Re: my first board!
« Reply #1 on: July 13, 2008, 04:57:49 PM »
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)

Offline airman00

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Re: my first board!
« Reply #2 on: July 13, 2008, 06:04:09 PM »
fist......oscillato ....capacito...seial.....woking,....poweful

having trouble with the R key on your keyboard paulstreats?
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

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Offline Private Reid

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Re: my first board!
« Reply #3 on: July 13, 2008, 09:21:45 PM »
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  :)
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Offline junior000Topic starter

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Re: my first board!
« Reply #4 on: July 13, 2008, 10:21:14 PM »
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?
view my tutorials at


www.myfirstbot.blogspot.com

Offline paulstreats

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Re: my first board!
« Reply #5 on: July 14, 2008, 07:38:32 AM »
Quote
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  ;D

Offline polar bear6

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Re: my first board!
« Reply #6 on: July 16, 2008, 12:24:46 PM »
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.

Offline Admin

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Re: my first board!
« Reply #7 on: July 25, 2008, 09:14:21 PM »
Quote
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.

 


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