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Step 5: Use EAGLE to draw a schematic for the CMOY Mint Tin Amplifier CircuitGo back to the TEAMS EAGLE Home Page or to the 16.100 Intro to ECE EAGLE Home Page Task Description (due at beginning of class on Feb 13)Now that you know how to create a printed circuit board using EAGLE, try your skills using the "Mint Tin Amplifier" schematic you completed for the November 18 class. On Friday Feb 13 you will turn in the following pages, stapled in the order shown below...
Print these items at home--don't rely on university printers/networks!! Here are some instructions & hints...1. Correct your schematic, if necessary...b. I have reviewed a couple diagrams for students and have found many unconnected joints (they looked connected on the schematic, but were not). Try moving the components in the schematic--if connected, the wires should move with the components! Also, use the show tool!
c. Make sure you've added +9V, -9V, and PE (ground) symbols from the supply2 library (see notes in red from my solution Δ).
d. Make sure you add the "Mint Tin Outline" and "9V_Battery_Outline" project boxes to your schematic (highligthed in yellow in revised parts list.
e. Carefully review your schematic to make sure it is complete and correct before moving on to the PCB layout steps below! In Particular, make sure all of the wire connections are correct using the show tool.
2. Create your PCB...On the top tool bar click on the Board/Schematic button. Eagle will ask if you want to create a new schematic—click yes. Maximize the window.  The parts on your PCB layout screen should look exactly like those shown to the right, although your parts may be in a slightly different order. For example, you should have ONE 8 pin DIP chip (the OPA2132PA amplifiers), ONE dual potentiometer that looks EXACTLY like the one below, etc. If they don't look the same, you chose the wrong part (go back to the schematic, delete the incorrect part, and add the correct one).
Note: Always use the Board/Schematic button to switch between the schematic view (a logical abstraction of the physical device) and the board view (a CAD representation of the physical layout of the printed circuit board). DO NOT use the MS Windows tabs on the bottom of the screen to flip between the windows--although I have never had a problem, I have heard that using the windows tabs can cause problems.
As you are moving the components around on the board, you might want to take a moment to see if yellow wires are attached to each pad on the component. If a yellow wire is missing from a pad, you may have missed a connection on your schematic!
PCB Layout Restrictions You Must Follow!
Project Grading & Bonus
Go back to the TEAMS EAGLE Home Page or to the 16.100 Intro to ECE EAGLE Home Page |
