This LED slowly cycles through various colours, making it ideal for mood lighting, toys or ornaments.
|Operating voltage:||2.7V to 5V (this LED does not require a current limit resistor)|
|25mA||Brightness (ave): 1000 mCd|
Mood Lamps by students at St Marys Catholic High School and Sixth Form, Manchester.
Colour Changing LED demo and explanation video.
Colour Changing LED demo video.
A video about LED current limits taken from our Ask Kitronik Live event 2012.
Learn how to use a through hole LED in a simple E-Textiles circuit in our easy to follow tutorial.
Learn how to position LEDs through fabric in our easy to follow tutorial.
A guide to understanding how Colour Changing LEDs work.
Hi Adrian, This should be fine, we use the 5mm version of this LED in our electro-fashion range and this runs off a 3V coin cell battery without a problem.Posted byon Monday, 23 January 2017
Hi Carol, Unfortunately the only colour changing LED’s we have are diffused. The only other alternative we have is an RGB LED, https://www.kitronik.co.uk/leds-and-lamps.html?led_colour=170&lens_type=162 you would then use a micro controller to change the colour that the LED outputs.Posted byon Tuesday, 20 December 2016
0voteA: If you mean these colour changing LEDs then yes https://www.kitronik.co.uk/products/components/leds/leds/colour-changing-and-rgb-leds/5v-colour-changing-led-10mm/. You can connect them directly to the USB power supply without the need for a current limiting resistor.Posted byon Monday, 8 April 2013
0voteA: The LED needs to run off 5V, you are best using a 5V regulator to achieve this as you will always get 5V irrespective of the current consumption of the LED. The LED works by turning on different amounts of red, green & blue LEDs therefore to get red just the red LED is on to get purple the red and blue LED are on. This means that the current consumption of the LED when purple will be twice the current or the red as twice as many colours are on. The way you would normally work out the current limit resistor is to look at how much current the LED takes and the voltage that would drop across the resistor, the issue is that whilst there would be 4V over the resistor the current is variable. This means that you can?t work out what the value of the resistor using theory. If it is possible to keep the voltage on the LED in specification across the full colour range then you may be able to drop the voltage using a resistor however I couldn?t guarantee that it would work or recommend the resistor value.Posted byon Tuesday, 18 June 2013
0voteA: You could use this power supply https://www.kitronik.co.uk/products/batteries-holders-chargers-usb-power/power-supplies-and-usb-power/5v-uk-mains-wall-power-supply/ without a resistor it should be able to power 100 of the colour changing LEDs. If it struggles when a lot of the LEDs change to the more power hungry colours you may wish to use 2 power supplies with 50 LEDs on each. As for a board to do this, you could try these https://www.kitronik.co.uk/products/pcb-equipment/pcbs/strip-board-pack-of-5-100x160mm/ . One last thing, the colour changing LEDs don?t stay in synch for very long, they all have slightly different timings so after a few cycles they are all showing different colours. If you want control over the colours you would need to use https://www.kitronik.co.uk/products/components/leds/leds/colour-changing-and-rgb-leds/rgb-led-5mm-common-cathode-pack-of-500/ or the common anode version and some circuitry to control the timing of the colours.Posted byon Wednesday, 27 March 2013
0voteA: It takes about 45 seconds.Posted byon Tuesday, 29 March 2011
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