I've started doing some hardware hacking as part of my new job, I'm amazed at what is available these days. This NodeMCU costs about $5, has built in WiFi, is programmable through the Arduino IDE and can be powered by a small solar panel. I'm blown away.

@mhall119 If you get the ESP8266 bare, you can grab 'em for about $0.75.

Harder to work with, of course, but unimaginably cheap.

@ajroach42
For testing or hobby purposes I would pay $5 every time to save time and frustration.
@mhall119

@kelbot @ajroach42 Yeah, if I was manufacturing stuff at scale I'd definitely go that route, but not for prototyping/hobby projects. I got a 3-pack of the NodeMCU off Amazon for about $16 USD, it's certainly worth the extra for the ease of working with them.

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@mhall119 @kelbot For sure. I have a couple of the NodeMCUs kicking around for exactly that reason.

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