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Arduino Voltage/Current Meter with SD Card Support

Arduino Voltage/Current Meter with SD Card Support © GPL3+

This device allows you to record current, voltage, and power values onto an SD card. Recorded data can help to create useful graphs.

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Components and supplies

About this project

NOTE: This project was completed in 2019 as a part of my science fair project

SUMMARY:

This device acts as a multimeter which stores the recorded data values on an SD card. This allows the recorded data to be graphed and analyzed for your own purpose.

PURPOSE:

For one of my research projects, I needed a way to be able to record the voltage current and power produced by different sets of Solar Panels throughout the day. Because I didn't have access to an oscilloscope and it wasn't feasible for me to record data for all the sets of solar panels at the same time throughout the day. I needed to create a device that would allow me to collect the data I needed.

This is why I ended up creating a power logger that recorded the voltage current and power produced onto an external SD card. I was later able to extract the data from my SD card and graph it.

DATA COLLECTED:

The following image of the OLED shows the values recorded by the Power Logger. These values are stored as .txt files on an SD card.

Code

Power Logger Code - Arduino Web Editor

Schematics

Breadboard view of Power Logger
Breadboard  multimeter bm2badr6ks
Schematic of Power Logger
Schematic p5tlnkyxeu

Comments

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