[TriEmbed] iPhone to MCU

[Brian]

I'd suggest a MOSFET instead of an SSR and switch the low-voltage side, 
since you need low voltage for your circuit anyway.  A MOSFET capable of 
switching 5 or 10 amps (way more than should be needed) can be had in a 
TO-220 package probably for much less cost than an SSR.

For app development, you'll need a Mac and Xcode.  Join the Apple 
developer network.  It's free, and includes lots of resources for app 
development.  There may be 3rd-party F/OSS-friendly toolchains, but I 
don't know anything about them and can only imagine they would require a 
jailbroken iPhone in order to deploy the app.

Also, while this sounds like a fine educational project, I feel 
compelled to point out that your iPhone is already very smart about how 
it charges the battery.  That said, have fun and learn a lot!

Cheers,
-Brian

On 8/6/20 3:01 PM, Charles J. Lord, PE via TriEmbed wrote:
> Unless you're wanting to do a complete design including PCB, I would 
> recommend the newer nodemcu modules that now include Bluetooth. For the 
> SSR I would just go through digikey and look at your specs.
> 
> Charles J. Lord, PE
> President, Blue Ridge Advanced Design and Automation
> Past Chair, IEEE Western NC Section
> Chair, IEEE NC Council
> Chair, IEEE SoutheastCon 2020 and Steering Committee
> c.j.lord at ieee.org <mailto:c.j.lord at ieee.org>
> 
> On Thu, Aug 6, 2020, 2:55 PM Ron Craig via TriEmbed 
> <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
> 
> 
>     I want to build a simple iPhone charger using a SSR and NFC or
>     Bluetooth to communicate with an app on the phone. Battery below x%?
>     Turn on. Battery y% or higher? Turn off. Small base housing
>     microcontroller and comms. App sleeping most of the time, but
>     periodically waking to check battery and issue status to base.
> 
>     Suggestions for the MCU and Comms selection and pointers to info on
>     app creation are very appreciated.
> 
>     Best,
>     Ron
>     Sent from my iPhone. Please forgive my typos.
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