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Topic: HELP ME WITH DESIGN Eagle file - my first proyect (Read 4714 times) previous topic - next topic

Sulivan22

hello, cyclegadget

   Yes, i know that. my prototype is over this board... but i want make my own board only using the necessary componentes that arduino ethernet have...

    The schematic that i put in my last post is a modification of Arduino Ethernet board.

CrossRoads. i am in a good way??? good!!!! Now i will add the PIR sensor etc etc..

   
Thanks


CrossRoads

Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Sulivan22

#17
Aug 21, 2012, 01:00 pm Last Edit: Aug 21, 2012, 01:11 pm by Sulivan22 Reason: 1
Hi..

   I think i removed all componets unnecessary.

   Please, can you check the Schematic and tell me if i can removed more component unnecessary?


   can i do the board with this componentes?

CrossRoads

If you've decided what crystal you are using, you can delete 2 of Q1, Q2, Q3.
Check the pinouts on J1 - looks like its set up to accept an FTDI Basic or similar - make sure Tx on whatever that device is goes to Rx on the '328.
The '328 you have shown is the leadless part. You will need to bring its Reset, SCK, MOSI, MISO, +5, GND out to a 6 pin header so you can download a bootloader (or a sketch with no bootloaded) into it.
You will not be using a crystal on the '328? I think you will have better results with high speed communications (such as SPI) if you use a 16 MHz crystal/22 pF caps with it.  You can always not install it later, but it will be hard to add one if you don't have room for it at the start.  You can use a small surface mount part if you want:
http://www.digikey.com/product-detail/en/406C35D16M00000/CTX856TR-ND/2292780
I think there's an existing library symbol for this part.

You have several signals that end in LED - where these intended to drive LEDs that show status or something?

When you think you're all set, run the eagle Design check (bottom left button on the left hand menu bar) to help identify things that look connected but may not be.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Sulivan22

umm thanks this is a littler hard for me. i am using the same components that the Arduino Ethernet Board  the crystal is the same and the J1 is the same FTDI Basic that the Ardu Eht board.

   i want the power through POE... can i download the scketch through FTDI ?

attached  the schematic eagle file and the arduino ethernet board eagle file too..

thanks for your help

CrossRoads

You can leave off the ethernet connection while downloading sketches via the FTDI port (J1).
If you are using an FTDI Basic, connect pin 2 to GND also.

http://www.sparkfun.com/datasheets/DevTools/Arduino/FTDI%20Basic-v21-5V.pdf

Your J1 pinout looks good to mate with this after you connect pin2 - it is an input to the FTDI Basic.

I can't see the eagle files from here, will check at home.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Sulivan22

Yes, I have this FTDI

http://store.arduino.cc/eu/index.php?main_page=product_info&cPath=11_12&products_id=143

Thanks

Sulivan22

finally i have this schematic.. i removed the unnecessary elements.

Can you please tell me if this schematic is ok? or i need to remove more thing unnecessary ? or add something else?

Thanks

i attached a foto from the prototype too

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