No code yet; I'm still researching. As is usually the case in new territory, the more I learn, the more I find I need to learn.

Also, now in the throes of buying an on-the-edge-of-my-budget house, all pennies are pinched by default until we're past the Raman Noodles stage.

That said, the electronics kit looks wonderful; I'll be adding that to my startup materials. Thanks for the link.

The other expenditure needed is Arduino step motor controls; this design needs to be mobile and is itself a mobile platform of moving parts.

I'm also considering building a simulator test platform so the testing doesn't require constant portage to the bot -- but that is an entire project unto itself and may not represent the most expedient way to go about this.

I'm thinking with the WiFi option on RPi3, a physical test environment might be the better way to go. I may have to revisit this decision as I start developing the self-defense module.

So actual shareable code will be awhile.