Step 2The PCB Layout
Here is the PCB layout.
As with all of my projects, I make the circuit boards using press-n-peel blue as a toner transfer, and cuperic chloride as the etchant.
This layout can be printed onto a laser printer directly and used as artwork.
I wrote detailed instructions in my Arduino Wordclock writeup that you can follow to etch your own board. Check out http://www.instructables.com/id/The-Word-Clock-Arduino-version/step2/The-hardware-Make-the-controller-board/ for details.
One thing with this layout - I had to use a surface mount IC (a 74HC08) - Please do not be too scared by the surface mount technology - it is extremely simple to solder - as we will see in the next step.
Anyway - Go on - make a PCB, and check out the next step for how to assemble the board.
Remember - download the PDF file as the master - not the PNG picture - the PNG is just there so that you can see what it will look like - it is almost certainly not to scale! If you print the PDF full size (without scaling) then it is the exact correct size for Toner Transfer.
*Upate* - I just made another controller and realised that the pin spacing on the Ethernet jack was slightly off.... It has been fixed in the attached PDF layout.
Arduino-Ethernet.pdf(595x842) 47 KB| « Previous Step | Download PDFView All Steps | Next Step » |












































https://www.jameco.com/Jameco/PressRoom/makeoneetch.html
On that subject - if anybody wants some of these boards, I would be very happy to etch them for people.
If you would like one, just let me know, and I will add some PCBs to the next batch of clock boards that I make. I can accept paypal payments to doug@doughq.com
I love your design!
I am wanting to add SD card and a RTC to this for data logging temperatures, do you think this is possible? Any suggestions?
Would it be possible to get the CAD files for the design?
Thanks.