Make Your Own Power Meter/Logger

In this project I will show you how I combined an Arduino, an INA219 power monitor IC, an OLED LCD and a Micro SD Card PCB in order to create a power meter/logger that has more functions than the popular USB Power Meter. Let's get started!

The video gives you a good overview on how to create your own power meter. In the next steps though I will present you some additional information to make this project even simpler.

Here you can find a parts list with example seller for the portable version of this project (affiliate links).

Aliexpress:

1x LiPo Battery: https://s.click.aliexpress.com/e/_dZhZsnd

1x TP4056 Board: https://s.click.aliexpress.com/e/_dX8n0hp

1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_d62ALdV

1x INA219 Board: https://s.click.aliexpress.com/e/_dUZvYoX

1x OLED LCD: https://s.click.aliexpress.com/e/_dWfFi0n

1x SD Card PCB: https://s.click.aliexpress.com/e/_dUy68bd

1x Switch: http://amzn.to/2gz9ZtW

Ebay:
1x TP4056 Board: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Arduino Pro Mini: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x INA219 Board: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x OLED LCD: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x SD Card PCB: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

1x LiPo Battery: http://amzn.to/2gM2vXB

1x TP4056 Board: http://amzn.to/2eUvMNO

1x Arduino Pro Mini: http://amzn.to/2g6Ujjr

1x INA219 Board: http://amzn.to/2gM5M9v

1x OLED LCD: http://amzn.to/2g6Q3Rd

1x SD Card PCB: http://amzn.to/2gM9Zdf

Here you can find the schematic for the Arduino Nano version and the portable version of this project. You can also find those schematic on the EasyEDA website:

https://easyeda.com/GreatScott/PowerMeter-b6051723...

https://easyeda.com/GreatScott/PortablePowerMeter-...

You can also use the pictures of my finished board as a reference for your own.

Now that your circuit is complete, it is time to upload the code. You can download it here. But don't forget to download and include the following libraries before uploading:

https://github.com/adafruit/Adafruit_INA219

https://github.com/adafruit/Adafruit_SSD1306

https://github.com/greiman/SdFat

You can find an improved version of my code here: https://github.com/gilleshenrard/datalogger

You did it! You just created your own Power Meter/Logger

Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab