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Turn off power draw for the Particle Electron IC2 battery only shield

In the Description on the Product page for the PR35-17 it mentions the ability to control the Boost circuit with pin A3, also it recommends to turn off the I2C port power when not in use. 

It is unclear to me if this is the same thing, or if there is an additional way to turn off the I2C power port. 

I'm using these in a scenario where they will wake up every 5 to 10 minutes, do a quick sensor reading over I2C, and then sleep.  Ideally I'd like to have no power draw from this shield or any I2C slave devices when sleeping. 

Also, I feel like the documentation is somewhat sparse in general.  The quality of all the your products I've used so far has been great, and largly just work as expceted, so thanks for that, but I do think that code samples, docs, or tutorials would take it to the next level.  




Hi Lance,

Yes, that's the only way to turn off the i2c port power, once you do that it will shut down the i2c port and there will be no power draw.

We are working on tutorial and libraries, we do have arduino library for most of the devices.


Let us know if there is anything else we can do for you.




Lance Andersen's picture

ya, looks like there's no libraries there for this particular shield.  but if the boost port is the only configurable thing on it, then maybe just a doc and a board diagram would suffice.  

Thanks for the info, I'm planning to verify my sketch is shutting it off properly with a multimeter on the I2C power port.  Do you think that will work?  Any suggestions?

Also, does the shield itself draw any power?