Professional at Being an Amateur: Expert Amateur is a website and video channel for people who do serious things without being paid to do them. We document open-source projects in solar energy, home automation, fire resilience, and anything else worth building — with enough detail that you can build it too.

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Popular Videos and Posts

Free Watts From the Ground: Boosting Bifacial Gain With What Was Already on My Pallets

In the last post I got 30 bifacial panels mounted straight and neat on the Chiko rack. But a bifacial panel is only half-installed when the modules are bolted down, because the whole point of paying for glass on both sides is the light that comes up...

Setting 30 Panels on a Chiko Ground Mount: What the Manual Doesn’t Tell You

My particular installation might serve as a useful guideline for yours, even if you elect to do a DIY rack. For various reasons I decided not to do mine DIY, mostly because I was concerned that I’d need an engineering stamp to pass local codes...

How the EG4 18kPV Knows the Grid Is Down — and Why It Doesn’t Need a Transfer Switch

If you’ve ever installed a backup generator, you know the drill: the generator can’t just be wired into your panel alongside the utility. You need an automatic transfer switch (ATS) — a big mechanical relay box that physically flips your...

New Rules

This is what I posted on Facebook: New plan. I’ve been considering pumping my solar channel by doing better videos. But that means less getting stuff done and more screwing with videos. So no. Instead I’m going to do short posts to...

It’s harder than I Thought

so my newest EMS/Detection/Fire Resilience experiment is implementing the system at my home and my shop in Hood River. I previously stated that once I had the prototype of the project files to dump into Claude, that it only took four hours to...

Sometimes I’m Just Wrong

I’ve been telling people for years that changing tires is all about technique, not equipment, and you can change tires easily with just two small aluminum tire irons, and good tire lube. A bead holder is handy but not critical. I’m not...

The value of an EMS

What a Smart Energy Management System Actually Saves a Two-Income Household There’s a specific kind of household that’s perfectly positioned to get the most out of a solar-plus-battery energy management system, and almost nobody is talking...

EMS Knowledge File Build Checklist

Who Cares? This post is really for geeky folks who want to know what this thing is going to be who appreciate technical detail. If that’s NOT you, then maybe just read the next four paragraphs. It’s also useful for those folks who wonder...

A little build it your way demo: Smarter Presence Detection with the Sonoff SNZB-06P– A $15 Sensor That Makes Your EMS Work Your Way

This is a demonstration of how you can work with the EMS system to have it precisely suit your needs. We’re getting closer to a release for the system. If you can’t wait for the tested and proven version and want to start playing around let...