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Electronics => Electronics => Topic started by: pomprocker on January 21, 2009, 12:39:45 AM

Title: Can someone check my eagle schematic for errors?
Post by: pomprocker on January 21, 2009, 12:39:45 AM

attached

Its a USB to RS232 Breakout board. It can be found in the examples in the ft232rl datasheet

Title: Re: Can someone check my eagle schematic for errors?
Post by: Soeren on January 21, 2009, 04:02:56 AM

Hi,

Please post the Eagle files (.sch and .brd) and I will look it over. Some errors won't show on a picture, so I'll wait for the design files.

Title: Re: Can someone check my eagle schematic for errors?
Post by: bukowski on January 21, 2009, 11:16:04 AM

Why doesnt anybody use bus lines? They only take a couple of more minutes, but they do clean up a schematic.

Title: Re: Can someone check my eagle schematic for errors?
Post by: pomprocker on January 21, 2009, 11:54:07 AM

I'll post the design files tonight when I get home.

Bus lines....I'm very new to eagle...only used it a couple days now.

Title: Re: Can someone check my eagle schematic for errors?
Post by: TrickyNekro on January 21, 2009, 12:05:11 PM

Bus lines are mainly for parallel signals....
They won't do here.... :P

Post the libs... and we can get something!!! 8)

Title: Re: Can someone check my eagle schematic for errors?
Post by: pomprocker on January 22, 2009, 01:10:37 AM

posted...

Title: Re: Can someone check my eagle schematic for errors?
Post by: TrickyNekro on January 22, 2009, 04:40:00 AM

Check this man...
There are some corrections...
I don't know if your schematic is correct as far as the components go...
But I did some "CAD" corrections 8)

Title: Re: Can someone check my eagle schematic for errors?
Post by: pomprocker on January 22, 2009, 11:05:57 AM

Thanks man, I needed some help cleaning it up ;)

As far as the circuit being correct, well i'll just have to test it on a breadboard before i send off the pcb

Title: Re: Can someone check my eagle schematic for errors?
Post by: Soeren on January 22, 2009, 03:44:04 PM

Hi,

Here's my take on what you have wired up so far.

Here's some advice, that could help you along...
Be carefull with your junctions (green dots on wires) and don't just sprinkle them on - if you see a junction where none should be, you might have more than one wire.

Place capacitors in a logical manner, to show where they belong (eg. close to the positive line when used as decoupling).
You used Vcc and Gnd. In digital circuits, you should use Vdd for positive and Vss for negative line. In analog circuits, it's Vcc and Vee respectively.
Gnd is for ground lines.

Title: Re: Can someone check my eagle schematic for errors?
Post by: pomprocker on January 22, 2009, 09:31:23 PM

Wow thats really cleaned up.

I dunno what to call it but for gnd i need 0v, and voltage is 5v.

The only reason i labeled it vss on the jumper is because that is what the pin on the BS2 is called

Oh and one more thing....The MAX213 has vcc and gnd pins, 10 and 11, but they seem to be hidden....how does that work?