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how can I make a RGB LED or three leds change colour on their own WITHOUT using a microcontroler? Answered

I am new to elecrtonics and dont have alot of money. How do i do this simply and cheaply?

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user
qs

Best Answer 9 years ago

The circuit to do this is here.

Could any one help me make a w5w led light bulb that I could have the color white or blue and want to have a bright bulb running on a 12v system

Could any one help me make a w5w led light bulb that I could have the color white or blue and want to have a bright bulb running on a 12v system

0
user
gmxx

9 years ago

both technoplastique and firehazrd are correct. it deends on what you want to do. if you can give more details, then we can give you better answers. by the way, if you get a blinkm, you must buy an arduino board, which costs between 20 and 35 bucks depending on which variant you get. however, this is WELL worth the investment.

Just look for a 'flash' or 'change' rgb led - you can get them (in larger quantities) for around 10 cents each from ebay sellers in China. You just power them up and they start changing from color to color on their own. You don't have any control over the speed, but they look pretty cool anyway.

http://cgi.ebay.com/100-5mm-Colorful-Slow-Flash-RGB-LED-FREE-RESISTOR-SCF5_W0QQitemZ290266333950QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item290266333950&_trksid=p3286.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A0%7C293%3A1%7C294%3A50

Sparkfun.com has an rgb w/built in controller. Search for "blink m" there's a $12 one & a $24 one.