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RGBW LED strip current

jocke4u last edited by

Hi,

I have a stupid question and since it's referenced in the "MySensor shop" I would like to post here

The LED strip on the "MySensor store" here http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575069610&toolid=10001&campid=5337433187&customid=&icep_item=171158397695&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
says

Specifications:
● Color: RGBW Mixed
● View angle:120°
● Working Voltage: 24V DC
● LED Quantity: 300 leds/5 M(150pcs RGB LED and 150pcs White LED)
● Working Current/Meter: 6A
● Output power: 72W /5 Meter

As I understand 5050 SMD LED have a standard power consumption of 0,24W/LED = 72W for the one above which seems ok. With 24V it should be 3 Amp for 5 m (72W/24V) and not 6A per meter as it says.

Also it would be good to have a good recommendation on 12V LED driver as you also have 12V LED strips in the shop
/ Jocke
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@Nca78 Yes, I was actually thinking using DIP switch (or even more easy to read thumbwheel switch) to give a unique ID to each node! As soon as I receive the extra radio modules I ordered, I'll test that. @Grubstake I'm afraid you're right! But it's ok to have just a few days of battery life. As I wrote, it might be often disassembled and reassembled.
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Nice job, efficient and clean ! I'm tempted to buy this microscope now, so I can make your led light
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Very nice! I'm planning to build a 12x12 led 40x40cm "screen" and Fadecandy looks like a great match to create art to display on it.
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With how long max tape you test it ? I have a living room and i need control RGBW with about 16 meters.... I can use your controller ?
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@destos Wow!
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@Samuel235 said: Just one of many ideas, the possibilties are endless. I'de always go for RGB leds over just white, allows for more customisation while able to still give you the same white as the white leds. ... unless, as in my use case, colors are not needed. I'm too stingy to pay for the unused dry powder!
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@krisztian Hi krisztian, the singleLED board - as its name suggests - features only one LED output. If you want to have a setup with multiple LED strips you need to design a board with multiple outputs. I have already designed a board with 4 outputs, but I haven't built it. In terms of software you need to register multiple sensors in your program like this: #define numCh 4 //the number of outputs const byte ledPins[] = {9,6,5,3}; byte ledLevel[numCh]; boolean ledDimWay[numCh]; //in the setup function request the dim levels from the gateway for(byte i=0; i<numCh; i++) request(i, V_DIMMER); //in the presentation function register multiple lights for(byte i=0; i<numCh; i++) present(i, S_DIMMER); //if you receive a signal, you need to check for the sensor id setLED(message.sensor, requestedLevel); //to set the LED level (function: setLED) you need to use the sensor id to determine brightness and pin //Fade LED to set level int delta = (level - ledLevel[child]) < 0 ? -1 : 1; //Write to LED analogWrite(ledPins[child], map(ledLevel[child],0,100,0,255)); I will probably publish the whole code once I have built and tested the 4LED controller (i call it "MySensors rainbowLED") Hope I could help you ThetaDev

RGBW LED strip current

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