Electronics Design

This week, I made hello echo board. I used Eagle to design my PCB board, which was really painful. I struggled a lot to use the program to draw circit lines and layout component. Also, while I maximize circit widht, I accidently make a circuit that some part are not cut as design. I reallized it after I solder all peices, so I need to remove tiny44 and cut the circit by knife. Luckly after debugging the circit It works well.