The radio and its alarm rendition of Pachelbel’s Canon sounds tinny compared with our more-expensive picks, and the time display is less subtle, but set it to the bird chirping and ocean waves and turn the display off, and you should be fine. (We found similar flaws in the other under-$50 wake-up lights we tried.) You can also pair the light with one of its seven alarm tones (almost as many as on the Somneo at a fraction of the cost), including the radio. Even at its peak, the light doesn’t quite fill the room-it’s only 130 lux, compared with our main pick’s 300 and the entry-level Philips’s 200. Rather than simulating dawn or dusk, its white light simply grows from dim to bright within a 30-minute window-no fancy color nuances, and with a less gradual change than on our other picks. We also like that you can set multiple alarms during the week and that the sunset component comes with the option of several “wind down” routines, complete with calming sounds and (if you like) visual prompts to guide you in deep breathing. We think it’s the intuitive app that truly makes the upgrade worth it, allowing you to program your sunrise and sunset times and other features much more easily than navigating the buttons on the clock. It also has sensors that detect temperature and humidity, noise, and light levels (which post readings on its app), a built-in nightlight (just tap if you need it), and a USB port. But it offers more alarm sounds and a wider range of brightness levels and programmable sunrise nuances. The Philips SmartSleep Connected Sleep and Wake-Up Light (essentially the Bluetooth-connected version of the SmartSleep HF 3650, previously called the Somneo HF3650, our former upgrade pick) has many of the same features as our main pick, including a natural, red-tinted sunrise and sunset light. It’s for anyone who is eager to use their clock as an accessory for an entire sleep ritual. Oh, and watch the 15-minute tutorial video to watch the device in action and learn more about how it's created.This upgrade isn’t for someone who is simply looking for a sunrise alarm clock to go to bed and wake up to. If, however, you have your own 3D printer and some spare time, the engineer has helpfully open-sourced the plans, so you can knock one up at home if that's preferable. If you want one, then you're in luck, because Mojoptix sells them on his Etsy store - although since it takes 35 hours to manufacture each one, be prepared for a long wait. In addition, it can only tell the time in 20 minute intervals, so you won't be ditching your oven timer for this unit any time soon. The system isn't without limitations, since it'll only work between 10 in the morning and 4 in the afternoon. So, when it's 10:00am, you'll be able to see 10:00am projected onto the table below. As our nearest star passes along the sky, it pours through the holes that correspond to the readout for that time. The principle behind it is rather simple: treating the sun as a backlight for a series of analog pixels that are calibrated to precise angles. Step forward a French engineer, going under the name of Mojoptix, who has created a digital sundial that expresses the time digitally, casting numbers into its own shadow. People have been using the sun to tell the time since life began, but few ever expected that system to be worthy of an upgrade.
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