Guide
Heliostat & daylighting guide
Plain-English answers about moving real sunlight into the places architecture forgot - dark rooms, north-facing spaces and shaded terraces. Start here.
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What is a heliostat?
How a sun-tracking mirror works, and how it differs from solar panels and light tubes.
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Daylight deficit: why so many homes miss real sunlight
How much sun a home should get by standard, who misses out, and why winter makes it worse.
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How to get natural light into a north-facing room
Every option for brightening a dark room - from paint and mirrors to skylights and heliostats.
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A dark ground-floor apartment: what actually helps
Why lower floors stay grey, what renters can really do - and where the limits are.
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Heliostat vs. tubular skylight
Cost, installation, flexibility and winter performance compared - which daylighting fits your home.
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DIY heliostat: can you build one yourself?
Mirror, mount, controller, calibration and glare - what a home-built heliostat needs and where it usually gets stuck.
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How to bring sunlight to a shaded terrace or garden
Reclaim an outdoor seat the buildings and trees have shaded - automatically, all afternoon.
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Privacy by design: how a sun-tracking mirror runs locally
Glare protection from mirror shape, firmware zones and placement, plus one-time phone AR: the heliostat computes the sun's position itself and runs locally on your Wi-Fi.
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Why your home office needs real sunlight, not just bright light
Bright is not the same as daylight. How real sunlight differs from a ceiling lamp, and how to get it to your desk.
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Why houseplants struggle under grow lights - and what actually works
Green, UV, far-red - what grow lights miss, and why the complete solar spectrum is still the gold standard.
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Grow light instead of sun: is a grow light worth it?
When a grow light makes sense, what the sun does better, grow light or daylight lamp, and how real sun reaches a plant in a dark room.
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Morning light at home: what research says, and why many rooms miss it
Why many kitchens, bathrooms and bedrooms get no direct morning sun, and how to change that.
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Can you redirect sunlight indoors without construction?
Bounce real daylight through a window you already have - no roof work, no drilling, nothing built indoors.
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Why "daylight" LED bulbs aren't real daylight
Colour temperature isn't sunlight: what a bulb can't match - intensity, full spectrum, movement - and what does.
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Natural light and wellbeing at home: what we know
The honest design-and-comfort case for daylight at home - no health claims, no overstatement.
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Heliostat vs. sun tunnel vs. light shelf: an honest comparison
Mirrors, light shelves, sun tunnels, LEDs or a heliostat - what each really delivers, and how to choose for your room.
Bring real sunlight where you miss it
The ohoya Heliostat is in its founders reservation phase. Reserve your place from €49 - fully creditable toward the price, refundable any time.
Not sure how much sun your window gets? The free Sun Check works it out for your location. Or join the waitlist for every milestone update.
This device has not been authorized as required by the rules of the Federal Communications Commission. This device is not, and may not be, offered for sale or lease, or sold or leased, until authorization is obtained.