In lab_3 we built a prototype of our microphone-servo board. Now let's design the schematic of our own PCB. We'll draw an Eagle schematic of the microphone amplifier and servo supply / connector from lab 3, using the PCB design tool Eagle. It is not a very super powerful tool but installs very quickly, comes in a freeware version with limited functionality, can run on multiple platforms, and has lots of user-developed parts libraries. In lab_5 after the long Easter break, we'll complete the layout of this board.
This is an individual exercise and each student must complete it on their own laptop.
In this exercise we'll draw an Eagle schematic of the microphone amplifier and servo supply / connector from lab_3:
Remember that you actually modified some resistor values in lab_3 to bring the LM324 output more in the middle of it working range (see datasheet extract below).
When you are finished with your board schematic, send your schematic file (.sch) to email@example.com?subject=micboard schematic for Electronics for Physicists II