This product is currently under development!

Power Monitor Module

This product is a high-side sensing current/voltage monitor module. The sensing voltage is 0~36V and the current is ±20A. The operating voltage is 2.7~5.5V, and these values are available via I²C I/F. The slave address is selectable on the board, and up to 16 modules in total are connected.

This product has been verified to be able to acquire current and voltage values using the following Arduino library.

• asukiaaa/INA226_asukiaaa

SUSTAINA-OP^TM connects to Jetson Xavier NX through a carrier board and obtains values using the following library.

• hiroki-0001/INA226_Library

Features Rev. 2

Top Surface of PCB	Bottom Surface of PCB	Assembled Electronic Components

PCB

• 8" x 5" (20.32mm x 12.7mm) PCB layout
• 1" (2.54mm) pitch through-holes for pin headers
  • 2 x 5 pin headers - 1
    • VIN+: Power input side
  • 2 x 5 pin headers - 2
    • VIN-: Load side
  • 1 x 4 pin headers: I²C Interface
    • SDA: Serial bus data line
    • SCL: Serial bus clock line
    • VS: Supply voltage
    • GND: Common Ground

Texas Instruments INA226

• Bus voltage sensing from 0 V to 36 V
• Power-supply operation: 2.7 V to 5.5 V
• High accuracy:
  • Gain error: 0.1% (maximum)
  • Offset: 10 μV (maximum)

Note: The I²C address of this product is selectable from 16 addresses by the short lands on the board.

Development Environments

This product is designed with the following software.

• Autodesk Eagle 9.6.2

Repository Contents

\images

PCB preview images and capture of design screen

\libraries

Libraries used in Autodesk Eagle design

\pcb_order

Gerber data and documentation for ordering PCB

schematic.pdf

Circuit diagram of this product

*.brd

Board wiring design file by Autodesk Eagle

*.sch

Circuit diagram design file by Autodesk Eagle

.gitignore

A file that tells Git not to track a particular file

LICENSE

License to use this product

Documentation

The following documents are available for this product.

• \pcb_order\README.md: Information for ordering the PCB or PCBA

References

This product was designed with reference to the following products.

• Texas Instruments INA226EVM: INA226 evaluation module
• Strawberry Linux INA226: I2C digital current, voltage, and power meter module (up to 20A)

Contact

If you have any questions, please contact the designer of this product, Masato Kubodera, by e-mail.
E-mail: [email protected]

License Information

This product is open source. Please review the LICENSE for license information.

This product by Masato Kubotera is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.