Toks Fifo

Electronics Design

Fall 2013

I designed and manufactured an echo hello-world board, modifying it by adding an LED and button.

Deisgn: Schematic

I used Eagle for this project. Figuring out all the controls was difficult since this was my first time using Eagle. I downloaded the fab library and loaded it onto Eagle. I then added each component I needed, including the LED and switch. The LED is connected to a pull-up resistor. Lastly, I connected everything together using wire links; using GND and VCC nodes helped a lot.

Design: Board

After connecting everything in the schematic, I transitioned to the board. I created traces based on the yellow connectors between components shown in Eagle. I had to reduce the size of the grid in order to get more precise traces. Getting everything just right was more annoying than difficult, but it worked out in the end. I also created a border for cutting out the board on the bottom layer, so that I could export that as a .png image separately.

Milling Traces

Here's a video of the Modela milling out the traces. I had to mill 3 different times becasue of various errors. The 1st error was that the right side of the board got cut off when I exported the .png image. The 2nd error was that the border cut right into the board, destroying everything. I got it all right on the 3rd try.

End

All that's left is soldering all the components onto the board. I can't wait to program it using my FabISP!