RGB and controllers
- Thread starter Axkiker
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got any one controller in mind? Most of them use some sort of PWM "Pulse Width Modulation" to control the individual LED's separately. There are sellers on Ebay that sell little RGB drivers, or you could build your own if you were so inclined. Check out Dan Goldwater's DIY here...
http://www.instructables.com/id/RGB-Color-Controllable-High-Power-LED-Room-%2b-Spot-/
usLEDsupply
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an RGB controller works by varying the brightness of each color (using PWM) Red, Green, Blue and by making say red and blue bright and green dimm it will make purple so you can make most any color just by dimming different colors
there are lots of types of RGB controllers out there including ones that have remote controls and even some that have audio inputs for making the lights flash to the music or you could even make your own with an Arduino micro controller
there are lots of types of RGB controllers out there including ones that have remote controls and even some that have audio inputs for making the lights flash to the music or you could even make your own with an Arduino micro controller
Sure! all a RGB led is, is 3 leds in one package "1 each of a red green blue LED"
usLEDsupply
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keep in mind if you are using High Power leds you need to feed them a constant current like 350mA for 1w leds and most controllers are 12v constant voltage so you will need an adapter/driver like this to convert a 12v controller to a constant current supply or you could put several leds is series with a resistor or if you only need one led and don't mind loosing some efficiency you could just use resistors (here is a site to calculate the sizes)
either way it is a great learning experience and you can make some sweet projects
either way it is a great learning experience and you can make some sweet projects
Are you sure you have to use constant current simply because the LED is high power? You'd better check the LED you are buying because not all high power LEDs run at constant current. It depend much rather on the making.
Joe
http://www.ledcentre.uk.com/232-led-strip-lights/173-30-smd-power-5050-strip-led-light-rgb-12-v-dc.html
Joe
http://www.ledcentre.uk.com/232-led-strip-lights/173-30-smd-power-5050-strip-led-light-rgb-12-v-dc.html
usLEDsupply
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HTML:
Are you sure you have to use constant current simply because the LED is high power? You'd better check the LED you are buying because not all high power LEDs run at constant current. It depend much rather on the making.
Joe
http://www.ledcentre.uk.com/232-led-...b-12-v-dc.htmlthe leds on that strip are not high power leds and the current is still limited by the resistors (little black chip) wired in series with every 3 led lights
while you can connect them to 12v the current is still limited to the correct amount for the led based on a 12v input voltage
Very impressive! Out of curiosity why did you make the controller box out of wood?
Because I had some lying around, I find it easier to work than plastic or metal and it looks good.
