CE 351 Spring 2022
Course Project
Name: David Lee
Email: djlee1@fortlewis.edu


Introduction:
This Project was to take a PCB that we designed to be compact and use the ESP32 to be able to transmit data wirelessly, solder it and have it function.

Materials and Methods:
PCB, ESP32, Other MISC components.

Results:

Task 1: Fully Solder an ESP32 Board you designed

Figure 1: The Fully Soldered PCB

Task 2: Board must be Powered by a 1-cell Lipo Battery
 

Figure 2: Shows the Battery Powering the Soldered PCB (Blue LED is ON)

Task 3: You Must make a charging circuit. To Show that you can charge the 1-cell battery.


Figure 3: Shows video of the Initial Voltage


Figure 4: Shows the voltage After charging using the module given to us to use

Task 4: Demonstrate the Functionality of the Soldered PCB


Figure 5: Shows the Video Demonstration of the System working


Figure 6: Shows the data transfered from the PCB to the ESP32 Connected to the SD card

Discussion:
This Assignment was able to be succesfully completed. This Project proved to be very challenging for many reasons. The First reason was because all of the components were small expesically the TVL751. This componet was the smallest piece I have soldered and it proved to be difficult. After many attempts of it not working I asked Dr. Li for help. Once Dr. Li showed me how to do it, it was one there good. However I still wasnt getting the proper voltage to make the ESP32 powered. This was because I during the Design process I had forgotten to short the Enable pin on the TVL751 to be able to function. Dr. Li, was able to provide the solution of jumping the pin directly using the red arched wire that can be seen in Figure 1. This is not Ideal however it functioned properly and allowed me to finish the task. Overall this Project was fun to complete since I really enjoy the hand on fabrication process of the PCBs.