PC Controlled Power Supply with Data Logging Team 04 - ECE342-W24

3D Printing
Enclosure
Junior Design

Our project is a variable DC power supply meant to test and power small loads. It can provide 2 to 14 volts with a peak output of 1.5 amps. This enables the user to provide power to their system while monitoring how much power the system is drawing. In addition to being a power supply, the system has a data logging system that saves the current and voltage outputs to a micro SD card. The system is able to record those values when prompted by the user, facilitating easier data compilation and analysis. The key technologies implemented are the voltage regulator PCB, a current sensing module, a Nucleo L476RG microcontroller, and a micro SD card module. The voltage regulator pcb controls the voltage that the channels are outputting. The current sensing module is where the voltage and current values displayed by the system are being read from. The Nucleo L476RG is the central processing unit that tells the voltage regulator what to output, sends values to the display, takes in user inputs, interprets the current sensing module, and sends the values to the micro SD card module. The micro SD card module saves 30 seconds of voltage and current values to a micro SD card as a text file when the user prompts. The main challenges we faced were designing and implementing a voltage regulator circuit, an accurate current and voltage sensor, and a method for recording the data that is both readable and accessible. The most notable accomplishments we achieved were designing a functional voltage regulator PCB, saving voltage and current values to a micro SD card, and an enclosure that meets IP43 testing standards.

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Artifacts

Name Description
Enclosure Drawings Fusion schematic drawings pdfs of Enclosure   Link
PCB Files PCB schematics and KiCad files   Link
Nucleo L476RG User manual The user manual for the STM32 Nucleo L476RG board   Link
System Verification Documentation Documentation about system testing, reference links used to make power supply, bill of materials, and code used in the system   Link
Project Showcase Video An overview video of our project   Link
Project Summary Executive summary that outlines the problem we solved, how we solved it, and what we learned while doing so.   Download