https://github.com/marc56k/electricitymeterlogger

An Arduino based solution to log your daily power consumption to an SD card.
https://github.com/marc56k/electricitymeterlogger

arduino logging platformio rtc sdcard

Last synced: 2 months ago
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An Arduino based solution to log your daily power consumption to an SD card.

• Host: GitHub
• URL: https://github.com/marc56k/electricitymeterlogger
• Owner: Marc56K
• License: mit
• Created: 2021-05-15T08:47:11.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2021-05-15T19:57:52.000Z (about 5 years ago)
• Last Synced: 2025-03-04T19:45:06.468Z (over 1 year ago)
• Topics: arduino, logging, platformio, rtc, sdcard
• Language: C++
• Homepage:
• Size: 896 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# ElectricityMeterLogger

An Arduino based solution to log your daily power consumption to an SD card.

![](photo.png)

## How it works

On most modern electricity meters there is a flashing red LED that indicates the power consumption. By utilizing a photo resistor, this LED can be used to wake up a Ardunio from deep sleep and log the time of the blink to an SD card.

## What you need

* [Ardunio Pro Mini 3.3V with Serial-Adapter](https://www.amazon.de/dp/B086ZN9M1J) (Remove the the power LED to reduce power consumption in deep sleep)

* [Tiny RTC I2C DS1307](https://www.amazon.de/dp/B07DJ4QL1L) (Remove R2 and R3 to reduce power consumption)

* [10K Poti](https://www.amazon.de/dp/B07X6RR6F8)

* [Photo Resistor](https://www.amazon.de/dp/B08SC1M7V7)

* [Li or LiPo Battery (1000mAh - 3000mAh)](https://www.amazon.de/dp/B07XF1FTGY)

* [Micro SD-Card with SD Adapter-Card](https://www.amazon.de/dp/B00M55C0VU) (Can by directly soldered to the SPI pins of the Arduino)

## Wiring

![](sketch.png)