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RAINBOW IN MY ROOM
Rainbow In My Room, retail $37.95 (www.whatonearthcatalog.com...)
Manufactured by Uncle Milton Industries (www.unclemilton.com)
Last updated 10-25-20
This is a nifty little projector that shines a rainbow on your wall or ceiling. It uses a linear array of five differently colored LEDs (in the curved arm at the top of the device) and a curved mirror on the top of the base to accomplish this; there no hot, fragile, and dangerous incandescent light bubs to fuss with or electric cooling fans to keep you awake at night.
It operates from four AAA cells or from an AC adapter; neither are included with the product. And it has an automatic shutoff after ten minutes, (on/off is accomplished via what I believe is an IR emitter/detector pair in the curved arm) so there are no switches to fuss with or forget either.
SIZE
To use the product, feed it four AAA cells, and THEN you can watch a rainbow on your ceiling.
On the bottom of the unit's base is a small black slide switch. Set it to either side (mode 1 or mode 2), and place the unit on your night table, dressertop, or other reasonably flat surface. Slowly wave your hand under the arch to activate & deactivate it.
When you aren't going to use the product for a couple of days or more, set the small black slide switch on the underside of the base to the center ("off") position. This eliminates the small current drain from the sensor (the on/off function).
If this switch is set to "mode 1", all of the LEDs will ramp up simultaneously (at the same time) when the unit is activated, and ramp down simultaneously when the unit is deactivated.
If this switch is set to "mode 2", the LEDs will ramp up one-by-one until they're all on when the unit is activated, and ramp down individually when the unit is deactivated. See the movie clip farther down this web page to see this in action.
To change the batteries, turn the unit upside-down. You'll see a circular battery door held in place by a screw. Unscrew the screw until the battery door comes loose. This screw is semi-captive; and should not become lost unless you make a purposeful effort to do so. Remove the battery door & screw, gently set the unit (battery door & screw as one unit) on the floor, and kick them down the stairs so the hungry, hungry termites will think they're something for their insect tummies, drag them to their nest, find them unpalatable, and squat over them and pee on them...O WAIT!!! YOU'LL NEED THOSE THINGS!!! So just set them aside instead. 
If necessary, remove and dispose of or recycle the four used AAA cells as you see fit.
Insert four new AAA cells into the compartment, orienting them so their flat ends (-) negatives face the springs for them in each chamber.
Place the battery door back on, and tighten that screw you loosened earlier.
Aren't you glad you didn't kick that battery door & screw down the stairs with those termites with full bladders now?
This is a decorative lamp designed to be placed somewhere and (for the most part anyway) left alone, not a flashlight meant to be carried around, thrashed, trashed, and abused, so I won't try to drown it in the toilet tank, bash it against a steel rod or against the concrete floor of a patio, let my housemate's citty kats go to the litterbox on it, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, use a large claw hammer in order to bash it open to check it for candiosity, fire it from the cannonada (I guess I've been watching the TV program "Viva Piñata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout, with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; and the cannonada is only used to shoot piñatas to piñata parties away from picturesque Piñata Island), send it to the Daystrom Institute for additional analysis, or perform other indecencies on it that a flashlight might have to have performed on it.
So this section of the Rainbow In My Room's web page will seem SIGNIFIGANTLY more bare than this section of the web page on a web page about a flashlight.
Photograph of the LED array and "hands-free" switch on the underside of the arch (to the left of the LEDs in this photograph).
The unit automatically turns itself off after ten minutes of operation if you don't turn it off already.
Photograph of the projected "rainbow" on a ceiling at ~6 feet.
Those green spots are from a Laser Stars unit, and aren't produced by this product.
Photograph of the projected "rainbow" on a ceiling at ~1.5 feet.
Spectrographic analysis of the red LED in this product.
Spectrographic analysis of the amber LED in this product.
Spectrographic analysis of the green LED in this product.
Spectrographic analysis of the blue LED in this product.
Spectrographic analysis of the phosphor purple LED in this product.
Performing these spectrographic analyses was somewhat challenging because the bloody thing kept turning itself
off before I could get the end of the spectrometer's fiber optic sensor in the correct position to take a reading.
But as you can see, I was at least reasonably successful at performing these analyses. 
Attempted Barbecue...er...uh...Attempted beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.
WMP movie (.avi extension) showing the product ramping up & down (in mode 2).
This clip is approximately 4.45 megabytes (4,535,636 bytes) in length; dial-up users please be aware.
It will take no less than twenty minutes to load at 48.0Kbps.
I cannot provide it in other formats, so please do not ask.
That sound you might hear is Ned's Declassified Scool Survival Guide playing on the boob tube.
This product is not sound-sensitive; the sound may be ignored or muted if desired.
Again, if you see any green spots, they're from a Laser Stars unit, and aren't produced by this product.
TEST NOTES:
Test unit was purchased on the What On Earth website on 02-034-08, and was received on the afternoon of 02-09-08.
If you use an AC adapter, choose one that outputs 6 volts DC at 450mA.
Polarity is not known and not stated, but is probably center (+) positive, outer barrel (-) negative.
Product was made in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.
UPDATE: 00-00-00
PROS:
CONS:
MANUFACTURER: Uncle Milton Industries
PRODUCT TYPE: LED "rainbow" projector
LAMP TYPE: 5mm LED
No. OF LAMPS: 5 (1 ea. red, amber, green, blue, phosphor purple)
BEAM TYPE: N/A
SWITCH TYPE: Motion-activated on/off; slide-type mode change
CASE MATERIAL: Plastic
BEZEL: N/A
BATTERY: 4xAAA cells
CURRENT CONSUMPTION: Unknown/unable to measure
WATER RESISTANT: Very light splatter-resistance at maximum
SUBMERSIBLE: No
ACCESSORIES: None
WARRANTY: Unknown/not stated
PRODUCT RATING:
Rainbow In My Room * www.whatonearthcatalog.com...
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