Title: #twatch schematic....
Post by: ezflyr on November 23, 2009, 10:02:36 pm
Post by: ezflyr on November 23, 2009, 10:02:36 pm
Hi,
Any chance to get a schematic in .pdf format or something else that's readable when enlarged? The .png file on the website is just not cutting it for this purpose. I don't use Eagle, and I'm trying to avoid having to install it just to get a readable schematic unless I absolutely have to!
Thanks,
John
Any chance to get a schematic in .pdf format or something else that's readable when enlarged? The .png file on the website is just not cutting it for this purpose. I don't use Eagle, and I'm trying to avoid having to install it just to get a readable schematic unless I absolutely have to!
Thanks,
John
Title: Re: #twatch scematic....
Post by: IPenguin on November 23, 2009, 11:31:09 pm
Post by: IPenguin on November 23, 2009, 11:31:09 pm
Here is the #twatch_v2b schematic in high-res PNG format ...
(http://http://img99.imageshack.us/i/twatchv2bsch.png/)
and in PDF format ...
http://img136.imageshack.us/img136/7349 ... v2bsch.pdf (http://img136.imageshack.us/img136/7349/twatchv2bsch.pdf)
(http://http://img99.imageshack.us/i/twatchv2bsch.png/) and in PDF format ...
http://img136.imageshack.us/img136/7349 ... v2bsch.pdf (http://img136.imageshack.us/img136/7349/twatchv2bsch.pdf)
Title: Re: #twatch scematic....
Post by: ezflyr on November 24, 2009, 04:12:15 am
Post by: ezflyr on November 24, 2009, 04:12:15 am
Hi IPenguin,
Thanks for the schematics, I appreciate it!
Can someone describe the circuitry associated with RD-/RD+ and TD-/TD+? This area of the schematic is very strangely drawn. It looks like TD- and TD+ are pulled up thru R32/R33 and L1, but I'm not sure if there is a connection there to RD- and RD+. The connections are superimposed, but there are no tie-dots. It looks to me like there is some sort of an error in the schematic drawing at this point!
Thanks,
John
Thanks for the schematics, I appreciate it!
Can someone describe the circuitry associated with RD-/RD+ and TD-/TD+? This area of the schematic is very strangely drawn. It looks like TD- and TD+ are pulled up thru R32/R33 and L1, but I'm not sure if there is a connection there to RD- and RD+. The connections are superimposed, but there are no tie-dots. It looks to me like there is some sort of an error in the schematic drawing at this point!
Thanks,
John
Title: Re: #twatch schematic....
Post by: ian on November 24, 2009, 08:40:46 am
Post by: ian on November 24, 2009, 08:40:46 am
There's no connection to RD+/-, it just overlaps slightly in the schematic. That's just the termination circuit for the PIC side of the magnetics inside the ethernet jack. In Eagle and you should be able to move them apart or look at the net lists.
Title: Re: #twatch schematic....
Post by: IPenguin on November 24, 2009, 02:44:02 pm
Post by: IPenguin on November 24, 2009, 02:44:02 pm
ezflyer, yaw :)
Eagle by Cadsoft(dot)de is free for private/non-commercial use in the freeware version and available for Linux, Mac OS X and Windows (in alphabetic oder) :D
I use the freeware version of Eagle at home and on my laptop and so far I have been able to view, edit and export/convert all of Ian's (and Seeedstudios) Eagle projects I have looked at.
It really pays off to install Eagle (about 70MB once intalled) if you want to follow the projects and see/verify the details.
Eagle by Cadsoft(dot)de is free for private/non-commercial use in the freeware version and available for Linux, Mac OS X and Windows (in alphabetic oder) :D
I use the freeware version of Eagle at home and on my laptop and so far I have been able to view, edit and export/convert all of Ian's (and Seeedstudios) Eagle projects I have looked at.
It really pays off to install Eagle (about 70MB once intalled) if you want to follow the projects and see/verify the details.
Title: Re: #twatch schematic....
Post by: ezflyr on November 24, 2009, 05:41:22 pm
Post by: ezflyr on November 24, 2009, 05:41:22 pm
IPenguin,
Yeah, I'll probably install it as you suggest. Hehe, it will be the third PCB software suite I've got on my machine. I normally use PADS PowerPCB for all my work, but I've also got ExpressPCB, and soon Eagle as well :-)!
I downloaded the Microchip datasheet for the PIC on the #twatch, and I can now see clearly the connections that seemed confusing on the schematic.
John
Yeah, I'll probably install it as you suggest. Hehe, it will be the third PCB software suite I've got on my machine. I normally use PADS PowerPCB for all my work, but I've also got ExpressPCB, and soon Eagle as well :-)!
I downloaded the Microchip datasheet for the PIC on the #twatch, and I can now see clearly the connections that seemed confusing on the schematic.
John
Title: Re: #twatch schematic....
Post by: IPenguin on November 24, 2009, 09:41:36 pm
Post by: IPenguin on November 24, 2009, 09:41:36 pm
ezflyer,
I know what you are talking about :D - I run KiCAD and Eagle for my private projects and to follow/view Open Source/GPL projects while we use Cadence/OrCAD in the company (by customer demand).
Uwe
I know what you are talking about :D - I run KiCAD and Eagle for my private projects and to follow/view Open Source/GPL projects while we use Cadence/OrCAD in the company (by customer demand).
Uwe