Well, 'gadget' will be too much of a word for this baby.This is basicaly an arduino powered RGB mood lamp plus the simon says game, two in one. This one is supposed to be my gf's Birthday gift.

The device starts with the default RGB Mood Lamp program, when you press any of the four keys at the bottom, the Simon says game starts. Whenever you press the Lonely Button ( A poet I am) above the mood lamp starts again. The thought behind is, my gf can play the game as long as she likes,then when she wants to go to sleep she can turn the mood lamp on. I hope she likes it.
                     
Now for the technical part: the chip inside is a ATMega8L, running on 8 Mhz internal clock. I am using a bootloader from this page http://todbot.com/blog/2009/05/26/minimal-arduino-with-atmega8/. As you can see in the photos, there is no crystal, also there is no regulator as I am using a samsung cellphone charger (the jack modified) to power it. The Samsung cellphone charger is basicaly a SMPS rated at 5.0 Volts 0.7 Amp.

I did the whole project on stripboards,programmed the chip in a Diy-stripboard arduino. I can post images of that too if anyone is interested.

As for the sketch, I have added up two sketches and modified it for my purpose, the Simon Sketch is from here: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1235696263  and the RGB Mood Lamp sketch is from the book 'Beginning Arduino' by Michael McRoberts. Thanks to both of them. I hope they have no problem with the way I am using their codes.

Now check out the videos:

How to operate the thing: http://www.youtube.com/watch?v=gNO1ofhuH30&feature=mfu_in_order&list=UL


Me dissecting the device: http://www.youtube.com/watch?v=_02b0uUFK5o&context=C3d1ff58ADOEgsToPDskLHTlbsnBa9xF0M5uEkyXHT


The mood lamp in action: http://www.youtube.com/watch?v=FPjupWpcf30&context=C3fcdb07ADOEgsToPDskKIQBjqdWrfFfebKW2k8c00


Now thanks for watching, please rate and comment. This is my first instructable,so you know : blah blah blah.......