Current Voltage Logger (CVL)

The CVL is an in-house, open sourced data logger that will assist SCEL students when doing their analysis of components and boards. We had a need to collect current and voltage readings over a time interval so we can estimate the power consumption of devices.

This particular project hopes to build a cheap and useful tool that will also serve as an educational tool for future students in the lab.

Initial Specification

• Collect current and voltage readings from DUT
• Transmit data to a computer at real time through a USB to RS232 converter
• Display data after collection
• Export data as a .csv file
• DUT must have a maximum voltage of 10 V and 3.2 A
• Current repository can be found here

• Develop an open-source tool for measuring real-time current and voltage
• Create a GUI that will allow users to visualize and export data as .csv files

• Live plotting
• Dynamically select USB port (must currently be hard-coded)
• Testing system performance for high resolution readouts
• Power-saving features
• Simple data analysis tools

Meeting Minutes April 28, 2016

Meeting Minutes April 14, 2016

Meeting Minutes April 7, 2016

Meeting Minutes March 31, 2016

Meeting Minutes March 17, 2016

Meeting Minutes March 10, 2016

Meeting Minutes March 3, 2016

Meeting Minutes February 25, 2016

Meeting Minutes February 18, 2016

Meeting Minutes February 11, 2016

Meeting Minutes February 4,2016

Meeting Minutes January 28,2016

Meeting Minutes January 21,2016

instrumentation_final.pdf

instrumentation_cdr.pdf

instrumentation_pdr.pdf

instrumentation_proposal.pdf

current_sensor_ina219.pdf

https://learn.adafruit.com/adafruit-ina219-current-sensor-breakout/overview

https://learn.adafruit.com/adafruit-ina219-current-sensor-breakout/library-reference

https://blog.udemy.com/arduino-voltmeter/

https://www.arduino.cc/en/Main/Standalone

https://www.arduino.cc/en/Tutorial/ArduinoToBreadboard

As this is a work in progress, please see this link for updated versions of the GUI. Instructions to run script.

• Install python if not already installed.
• Install necessary libraries by using the following commands.
  • Install matplotlib
  • Install PyQt
  • Install pyserial
• Through command line, navigate to project main directory and run: python main.py