[HN Gopher] DIY Night Clock Projector (2018)
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DIY Night Clock Projector (2018)
Author : GeoAtreides
Score : 86 points
Date : 2023-12-25 19:12 UTC (3 hours ago)
(HTM) web link (microengineer.eu)
(TXT) w3m dump (microengineer.eu)
| KennyBlanken wrote:
| This seems incredibly counter to good sleep hygine. There's
| extensive evidence that even relatively low levels of light harm
| sleep quality; blue light from white LEDs is particularly
| disruptive to circadian rhythm, and if you're having trouble
| falling to sleep, this seems like an excellent way to just ramp
| up your anxiety?
|
| One of the best things I did for sleep anxiety was to NOT have a
| bedroom clock at all, my phone goes face-down, I disabled my
| watch's auto-backlight functions, and I've tried very, very hard
| to not try and figure out the time once I'm "going to bed."
| Thankfully my e-reader also doesn't have a clock displayed unless
| you tap something, so if I wake up, I can read (with an orange
| book reading light) until I'm sleepy.
|
| The only lights I have that are on once I'm in bed are red LED
| night-lights (finding them was surprisingly tough.)
|
| Literally _never_ has determining what time it is helped me get
| back to sleep.
| jstanley wrote:
| What about when you wake up and it's still dark and you don't
| know whether it's worth trying to go back to sleep?
| Turing_Machine wrote:
| Exactly so. "Do I have time to get another hour or two of
| sleep, or is it time to get up and make coffee?"
| theglenn88_ wrote:
| You and parent comment don't have kids xD
| nkrisc wrote:
| That's what alarms are for. You go back to sleep and your
| alarm will wake you up.
|
| In my opinion it's always worth trying to go back sleep if
| you've got an alarm.
|
| Speaking for myself, there's nothing worse for falling back
| asleep than looking at the time. When I wake at night and
| it's dark, it might be 11pm, 2am, or 5am. I don't want to
| know what time it is. I go back to sleep and unless it
| happens to actually be within minutes of my alarm, I'll fall
| back asleep and never know what time it was.
| 1023bytes wrote:
| Red filter could probably help
| nirav72 wrote:
| Can be easily solved by adding some kind of motion sensor. Wave
| hand and the clock projects the time on the ceiling. Have a
| 10-15 second time out period to turn off the projection.
| mft_ wrote:
| I recall reading about a bedside clock which offers a dim and
| subtle colour-shift at certain times; for example, it might
| glow red until 4am, amber from 4-6am, and green from 6am
| onwards.
|
| The idea was to offer you you the ability to roughly determine
| the time to aid decision-making (as another commenter wrote,
| 'is it worth trying to go back to sleep?') without the
| alertness and/or anxiety that interacting with a gadget that
| tells the exact time.
| 2024throwaway wrote:
| > There's extensive evidence that even relatively low levels of
| light harm sleep quality; blue light from white LEDs is
| particularly disruptive to circadian rhythm
|
| Maybe not.
|
| https://www.unibas.ch/en/News-Events/News/Uni-Research/Light...
| itishappy wrote:
| Yeah, when I complained about sleep issues, projector clocks
| were one of the first thing my doctor mentioned. Right up there
| with screen time and food before bed. I was told no light, no
| clocks, phone on the other side of the room.
|
| Anecdotally, removing my brains ability to worry about how soon
| I need to wake up has been one of the most impactful sleep
| hacks I've found.
| kentiko wrote:
| I love this. I would really like to have a clock like this with
| the outside temperature and maybe a counter for unread messages.
| FirmwareBurner wrote:
| A counter for unread messages on the bedroom clock? I can't
| think of anything more anxiety inducing for my sleep than that.
| Bedtime is the one time and place I want to fully disconnect
| from anything 'on-line'.
|
| I even charge my phone in the other room just to eliminate the
| thought of reaching over from the bead to the nightstand to do
| 'smartphone things' with it.
| kentiko wrote:
| It could be set with an allowed list of friends and family
| only. The idea for me would be to know if it's worth looking
| at my phone if someone I care about tried to reach me, or if
| I can keep my eyes closed a bit longer instead. I absolutely
| do not want an email or Slack messages counter, of course.
| But in any case, maybe you are right, and it's a bad idea
| entirely...
| Havoc wrote:
| Image is impressively sharp
| roge7331 wrote:
| I love the project in terms of creating something but actually
| using such a clock just gives me anxiety just thinking about it.
| Endless cycle of waking up, checking the time, calculating the
| rest hours until I need to get back and falling back to sleep.
| ourmandave wrote:
| Can you adjust the size to like 3' numbers?
|
| I'm so near sighted the store bought ones that project on the
| ceiling are like trying to read the bottom row of an eye chart.
| GeoAtreides wrote:
| The article gives a formula for image width; the author also
| tried it with a Walimex Pro 10mm 2.8 lens, which gave a 2 meter
| width image.
| speps wrote:
| I bought a MicroVision Laser Projector from eBay a while ago. It
| doesn't need the usual focus adjustment and can project from 15cm
| to 2.5m. Originally only meant to be used with an iPod, I managed
| to get the VGA cable as well which will be useful.
|
| Docs: https://www.projectorcentral.com/Microvision-
| SHOWWX_Laser_Pi... Tech details:
| https://www.techinsights.com/blog/look-inside-microvisions-p...
| vardump wrote:
| Can it run continuously for years?
| spdustin wrote:
| Where'd you find the VGA cable? I've held on to my MV for years
| in hopes I could find time to resurrect it. I only had a dock
| connector, like you. I thought about just using composite and
| an external video DAC, but I know the thing can take a VGA
| signal as well.
| barbs wrote:
| Cool project. Does anyone know if they make those LCD screens in
| a higher definition? I've tried googling but I tend to find
| consumer electronics instead of electronic components.
| orenlindsey wrote:
| It would be too bright for me. And it would probably be quite
| anxiety-inducing.
| Rebelgecko wrote:
| FWIW you could probably just recompile with a lower brightness
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(page generated 2023-12-25 23:00 UTC)