Posts with «uv» label

Tiny UV Alarm

 

So as commented my son (4) has a rare condition so he can't be exposed to UV light (the Sun, halogen and some other artificial lights). There are other issues but UV exposition is a high risk.

At the moment the sensitive device to measures the ambient UV light:

read more

Let's Make Robots 05 Apr 23:24
alarm  arduino  cheapduino  uv  

Tiny UV Alarm

 

So as commented my son (4) has a rare condition so he can't be exposed to UV light (the Sun, halogen and some other artificial lights). There are other issues but UV exposition is a high risk.

At the moment the sensitive device to measures the ambient UV light:

read more

Let's Make Robots 05 Apr 23:24
alarm  arduino  cheapduino  uv  

The Smartest Smart Watch is the One You Make Yourself

If you’re building a smart watch these days (yawn!), you’ve got to have some special sauce to impress the jaded Hackaday community. [Dominic]’s NeoPixel SmartWatch delivers, with his own take on what’s important to have on your wrist, and just as importantly, what isn’t.

There’s no fancy screen. Instead, the watch gets by with a ring of NeoPixels for all its notification needs. But notification is what it does right. It tells [Dominic] when he’s got an incoming call of course, but also has different flashing color modes for SMS, Snapchat, and e-mail. Oh yeah, and it tells time and even has a flashlight mode. Great functionality for a minimalistic display.

But that’s not all! It’s also got a light sensor that works from the UV all the way down to IR. At the moment, it’s being used to automatically adjust the LED brightness and to display current UV levels. (We imagine turning this into a sunburn alarm mode.) Also planned is a TV-B-Gone style IR transmitter.

The hardware is the tough part of this build, and [Dominic] ended up using a custom PCB to help in cramming so many off-the-shelf modules into a tiny space. Making it look good is icing on the cake.

Thanks [Marcello] for the tip!


Filed under: clock hacks
Hack a Day 13 Mar 09:01
arduino  clock  clock hacks  ir  neopixel  uv  watch  ws2812  

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