I guess this could be called ambience TOH too, but I chose chameleon

This TOH prototype will have at some point (hopefully) following features:

- user selectable TOH color via SW
- "chameleon" mode: TOH will change color i.e. when you put the phone on a table or close to some other object. RGB sensor gives the color of the object and TOH will be adjusted according to that value

I'm using following components:

- https://www.sparkfun.com/products/9904
- http://www.adafruit.com/products/1334
- https://www.inventables.com/technolo...ptic-backlight
- https://www.inventables.com/technolo...ser-film-rolls

There's currently about 6 mm thickness increase in my TOH model, but I believe it can be reduced to 3-4 mm with custom pcbs.

Video (nothing fancy, just testing how to spread the light evenly):



Pictures: http://relativity.fi/jolla_chameleon/

This just look awesome
Will you hook it up with the notifications? (new call, new sms, charging and so on)

Yes, I'm planning to.

Those fiber optic backlight panels are a bit tricky. I tested them with different configurations (that's why stuff is connected in the pics so poorly):

The fibers have to be positioned to point straight to the LED to get enough light out of them. There has to be also some diffuser film between to get uniform color across the panel. Otherwise some fibers may have different color than others.

In a dark or shady room the cover is almost too bright. Normal house lightning is ok too, but the the effect is not so notable. Note that I haven't tested 5 V yet, only 3,3 V.

At sunlight there should be a wall of superbright leds to see changes in illumination, two leds just doesn't cut it. Adding more leds is not an option, because they draw too much power. Those 2 RGB leds will draw about 120 mA (60+60) at full brightness which will significantly reduce battery duration.

This is propably too big http://dangerousprototypes.com/2014/...ws2812-family/

Yes, 8 mm is pretty thick.

BlinkM minis are good, but they are now in 45 degree angle. 90 degree would be optimal to get most of the light into the fiber optic backlight panels, but then TOH thickness would be 12 mm.

wow really cool project!! Best of luck skvark

You should go to side-firing rgb leds (rare), or single-color and arrange fibers so that every other goes to different color.

or skip the fiber-thing, and use sidefiring with diffusors, something like in lcd backlights. ?dunno. use more leds with lower current to get even light?

Side-firing sounds viable. Arranging fibers, maybe no.

Based on my tests, I think the fiber stuff is enough (indoors). I may change the leds to side-firing ones later to make the TOH thinner. But if there's some backlight + RGB combo and it draws max. ~100 mA I'll happily use it

Problem with multiple leds is that every color draws at max. about 20 mA. If I have 10 RGB leds and I drive each color at 10 mA, those 10 (actually 30) leds draw total 300 mA.

Wow, so much bling Good work Skvark