Author Topic: Homemade PIC robot board.  (Read 3642 times)

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Offline galannthegreatTopic starter

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Homemade PIC robot board.
« on: May 04, 2009, 01:33:15 PM »
I am making my own "PIC board" for my robotics projects. I am trying to save as much space as possible on the board with out causing any serious problems, and now I just have one simple question. Would having the crystal placed under the MCU cause too much electrical noise that would interfere, or should I place it somewhere else?
Kurt

Offline hazzer123

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Re: Homemade PIC robot board.
« Reply #1 on: May 04, 2009, 01:55:24 PM »
Placing a crystal there wouldn't cause too much electrical noise :)
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Offline galannthegreatTopic starter

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Re: Homemade PIC robot board.
« Reply #2 on: May 04, 2009, 01:57:29 PM »
Thank you very much. :)
Kurt

Offline GearMotion

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Re: Homemade PIC robot board.
« Reply #3 on: May 04, 2009, 01:58:17 PM »
I am making my own "PIC board" for my robotics projects. I am trying to save as much space as possible on the board with out causing any serious problems, and now I just have one simple question. Would having the crystal placed under the MCU cause too much electrical noise that would interfere, or should I place it somewhere else?

It will be fine under the processor.

Offline galannthegreatTopic starter

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Re: Homemade PIC robot board.
« Reply #4 on: May 04, 2009, 02:02:11 PM »
Thank you aswell.

I just absolutely hate having something so far off and taking up valuable board space, and now it'll make the board a little neater looking aswell. :)
Kurt

paulstreats

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Re: Homemade PIC robot board.
« Reply #5 on: May 04, 2009, 06:46:35 PM »
I remembe seeing a recommendation just recently about running +5v and gnd directly under the PIC lengthways to help remove noise, maybe this could also be a consideration for you.

Offline SmAsH

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Re: Homemade PIC robot board.
« Reply #6 on: May 05, 2009, 12:50:19 AM »
I remembe seeing a recommendation just recently about running +5v and gnd directly under the PIC lengthways to help remove noise, maybe this could also be a consideration for you.
i do that always anyway... but i never knew it would do that?
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Offline galannthegreatTopic starter

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Re: Homemade PIC robot board.
« Reply #7 on: May 05, 2009, 11:09:21 AM »
Thanks paulstreats, I will consider this.
Kurt

Offline TrickyNekro

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Re: Homemade PIC robot board.
« Reply #8 on: May 05, 2009, 01:52:05 PM »
I placed one many times...
What you need to consider is power cables over the crystal line and to keep crystal lines short....
For whom the interrupts toll...

Offline galannthegreatTopic starter

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Re: Homemade PIC robot board.
« Reply #9 on: May 06, 2009, 12:39:34 PM »
I've finished the board, just need to get some pics up of it.
Kurt

Offline galannthegreatTopic starter

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Re: Homemade PIC robot board.
« Reply #10 on: May 11, 2009, 02:11:51 PM »
Here are some pics of the completed board. Give me some suggestions I should consider or integrate into the board.
Kurt

Offline SmAsH

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Re: Homemade PIC robot board.
« Reply #11 on: May 11, 2009, 02:28:11 PM »
wow, great job! so is it like a giant $50 board?
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Offline galannthegreatTopic starter

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Re: Homemade PIC robot board.
« Reply #12 on: May 11, 2009, 04:20:54 PM »
Yea, it would be called that, but with a PIC, and now I'm thinking if I should write a tutorial on this, for the minority of PIC users and the like who want to use them.
Kurt

 


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