Eagle PCB Basics

Create an LED-switch-resistor schematic in Eagle

Open Eagle and select Projects and projects folder

Create a new project (in this exercise we’ll call ours “simpleLED_yourname”)

Create a new schematic and save the schematic with the same name as the project and in the project folder

Choose Add Part from the toolbar on the left.

Using an asterisk (*), search for “*3mm LED”

why the asterisk?

Choose LED3MM from the search list and press OK.

Click the mouse to put a single instance of the LED in the center of the workspace.

Now search for a resistor. Type “*5 resistor” for a 5mm resistor. Then under Resistor and R_US, choose “R-US_0204/5”

Place one resistor into your workspace. If you right-click before you place it, you can rotate it. There is also a rotate tool in the toolbar.

Add a sliding switch using the add part button. Search for “*sliding switch” and choose the “M251” switch.

Add a coin cell holder to your schematic using the add part button.

This time when you open the parts, look for a button “Open Library Manager”

Now click on the “Available” tab at the top.

Browse for “battery” and choose the “Battery Holder” library and press the USE button.

Find the Part: Search for “*coin” and under Battery Holder choose the “79523141” a part we have in class.

Using the net tool, from the toolbar on the left, make the connections for a complete circuit. Note below that LED triangle must connect to the + side of the coin cell.

Save your progress!

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