For this assignment I used Eagle. I found the following tutorial to follow

I had a bit of trouble finding the libraries referenced in the tutorial. After a bit of googling, I found the Hello Echo library here This contained the fab library as will as the 'ng' library in the tutorial. For good measure, I also loaded in the fab library found here and here

I first got used to Eagle by loading in the Hello Echo board as a project and making sure I had both the schematic and broad screens at the same time here

I then started adding the parts needed for the assignment: LED, resistors, GND (grounds), resistor, VCC, and the Button. I practiced moving them around, and made connections directly with a net, as well as by labelling the nets to link them (e.g. see 'Button' and 'LED' that link a pin on the board to the component)

I then switched to the board view, and placed the new components within the area of the board. I played around with all the connecting routes, trying to get rid of the yellow lines showing a missing connection (see picture on left). I finally got all the needed connections, although was puzzled by the existance of yellow lines within a component (see picture on right)

This is a picture of my board view. However, we realized when there wasn't enough clearence for the cutting tool. This created some necessary design rework with the traces, but finally I got a design that could be exported to the Fab Module for file generation.

Once fabricated with all the parts soldered on, I found one more problem - there was a short. The issue was that the Modela hadn't milled the copper away as it should have (I hadn't picked it up when checking the Fab Module file). This created a short on the board. To fix it I desoldered the AT Tiny and then with a small blade sliced off the offending copper. I then resoldered the microcontroller and checked the board with the multimeter, making sure there were no shorts.