To get ready for testing, I gave the lab a custom build of the PaperMETAR firmware. It runs the device flat out, with every electrical and wireless component as active as it can be. Labs test products in this worst-case state, because if a device passes like this, it will pass in normal use.

PaperMETAR Prototype Running the FCC Testing Firmware

PaperMETAR Prototype Running the FCC Testing Firmware

PaperMETAR shipped off to the lab, and I spent the next few days fretting while they worked through the tests. Then the email I’d been anxiously waiting for showed up:


Hello Farhan,

All testing has been completed, and your device passed the FCC Part 15 tests.
...


YES! I’m thrilled to report that PaperMETAR has officially passed FCC testing!

Yes!

Me. Excited.

I know some of you will ask which lab I used. I looked at numerous US-based labs and settled on HB Compliance Solutions in Tempe, Arizona. Before I signed on, I asked them a lot of questions, and they answered every one quickly. That didn’t change after I signed the contract, which isn’t always the case. Some vendors are quick while they’re selling and then slow down once the work starts!

Because PaperMETAR is a fairly simple device, they finished within a few days of receiving it. They have all the required accreditations and really know their stuff, and they were helpful the whole way through. If you’re building a hardware product and need FCC testing, I highly recommend them.

With FCC testing done, my next step is getting the 3D-printed case into a final state that looks good and prints the same way every time. A nice perk of 3D printing is that I can offer the case in lots of colors, so I’m trying out a few. Want a pink one? Sure, I can make you a pink one!

AI-generated Pink Version of PaperMETAR

A Pink PaperMETAR?!

Full disclosure: the picture above was edited with AI to show what a pink PaperMETAR could look like. But you get the idea!

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