Arduino Battery SMBus Reader

Introduction: Arduino Battery SMBus Reader

A simple SMBus reader for most smart batteries
Reads the data from the TI chip set used in many smart battery packs

http://www.ti.com/lit/gpn/bq29312

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1:

The 2x 1K resistors on data and clock inputs can be removed if you can’t get data
This was added for protection during testing other batteries with USB connection.

Step 2:

Original code was downloaded some time ago and heavily modified for formatting on Nokia display and getting data from larger battery packs (up to 8S)

Included the libraries that I used as these seem to change over time and the original code won't

More details are displayed via the Arduino Serial Monitor

Note the cell voltage displays 3 digits
Eg 356=3.56 volts
Cy = Cycles
CC = Current Capacity
DC = Design Capacity
DV = Design Voltage
V = Current Voltage

Step 3:

Build a Tool Contest

Participated in the
Build a Tool Contest

Be the First to Share

    Recommendations

    • Backyard Contest

      Backyard Contest
    • Silly Hats Speed Challenge

      Silly Hats Speed Challenge
    • Finish It Already Speed Challenge

      Finish It Already Speed Challenge

    2 Discussions

    0
    rossingtown
    rossingtown

    Question 5 months ago on Introduction

    Hi PB The board you gave me for the coffee, I managed to break the 5110 display and got one form ebay but when I run the arduino I get all pixels on.
    Is the code here the same as what I have on this nano?
    I want to try uploading the program again with different contrast values.
    Thanks
    Ross

    20191229_001110.jpg
    0
    pbtech
    pbtech

    Answer 4 months ago

    Yes . It’s the same code. It looks like the Arduino isn’t talking to the Nokia display properly. Recheck all connections.
    Edit - great to see you got it working again