[FR] Multiple INA226 support

[rflulling]

Is your feature request related to a problem? Please describe.

Feature Request: Inspired by the addition of the I2C amperage checking function via a singular INA226. I would like to ask for the ability to monitor one chip or channel per Axis. INA226 have one per chip. INA3221 have 3 per chip.

Are you looking for hardware support?

INA226 INA3221

Describe the feature you want

I would like to be able to use the INA226 or INA3221 to monitor the voltages and amperage of multiple axis.

In particular this may be useful in monitoring CNC axis load. Normally to do so a shunt or clamp must be placed inline. An extra monitor installed at the CNC router motor 120V or Spindle DC line to monitor router load. Monitoring load can improve the quality of cut parts.

I am certain the function was introduced to aid in monitoring current to the laser drivers. But I think it can be used for much more given that a clever person can derive a lot of data from these chips.

To be clear I am not requesting any changes to interface. Only serial output, maybe a clever way to view the data as a sub menu of the dot matrix type screens.

Additional context

I do believe the request, at least right now is of very low priority. I do not expect to see this request implemented. But I am hopeful that some one might see the value and work in a way to implement some expanded functionality for multiple I2C voltmeter/Ammeter channels.