DIY COB LED Calculator

Timeattack · Nov 26, 2016

Updated the spreadsheet with 3000k,4000k, 5000k, 5700k, and 6500k.

All are at 38V fV/80CRI. Cells are are already formatted, so if you want to see the numbers for a light temp not listed, plug in the lumen # @25°C and the entire spreadsheet will adjust the numbers.

https://www.dropbox.com/s/u20dbjh9bxw7p5z/Vero 29 Gen7 Spreadsheet revision.xlsx?dl=1

lostre10 · Nov 26, 2016

what about lower amps?
1050mA for example

Timeattack · Nov 26, 2016

lostre10 said:
what about lower amps?
1050mA for example

I don't know what the factoring number is @1050mA. If anyone knows what it is or how to calculate it, let me know.

lostre10 · Nov 26, 2016

i don't know what you mean..
something other than this?
http://www.bridgelux.com/sites/default/files/resource_media/DS93 Vero 29 Array Data Sheet Rev A 20160622.pdf

Timeattack · Nov 26, 2016

I didn't see the fV and lumen output scaling charts at the bottom of the data sheet.

Just updated the spreadsheet to include .7mA and 1050mA

https://www.dropbox.com/s/iu932e55hxdr4lf/VeroGen7 0.7-3.6A.xlsx?dl=1

These factor values and efficiency %s are just rough estimates and I would take them with a grain of salt.

lostre10 · Nov 28, 2016

i can see that efficiancy=efficasy/322
why 322?

Can you do the same exel with vero 18?

Timeattack · Nov 28, 2016

lostre10 said:
i can see that efficiancy=efficasy/322
why 322?

Can you do the same exel with vero 18?

I honestly couldn't tell you why the 322 value is used. I just used SupraSPL's spreadsheets for vero 29 V2s and changed some of the numbers. Hopefully someone can explain it a bit better.

do you have the link to the data sheet for the 18's?

lostre10 · Nov 28, 2016

http://www.bridgelux.com/sites/default/files/resource_media/DS92 Vero 18 Array Data Sheet Rev A 20160622.pdf

benbud89 · Nov 29, 2016

I think 322 is the theoretical max output for leds or this particular cob in lumens. Now, where that number exactly comes from, I dont know

Grumpycat-cq · Jan 11, 2017

Is this link still up? Cant find the working one...

coreywebster · Jan 11, 2017

Cedric Bernier said:
Is this link still up? Cant find the working one...

You tried the one in bggrass sig?

Grumpycat-cq · Jan 13, 2017

Yep on page 1 ... But im getting a 404 dropbox error saying that file isnt here anymore...

coreywebster · Jan 13, 2017

Cedric Bernier said:
Yep on page 1 ... But im getting a 404 dropbox error saying that file isnt here anymore...

The one on page1 is out of date.
His Sig is the bit of writing which is just under any of his posts.
There are two links, one for the cob calc and one which is a calc for just citizen chips.

Here they are
https://www.dropbox.com/s/hqgj9n5qxb9xrei/DIYCOBLEDCalculator.jar?dl=0

https://www.dropbox.com/s/2s0xo583lw10m29/CitiCalculator.jar?dl=0

Nutria · Jan 17, 2017

Vero 29 on the calculator are the 36v, right? anyway to use the 52v?

sixstring2112 · Jan 17, 2017

someday i will learn how to open that damn calculator lol

Baura · Jan 23, 2017

sixstring2112 said:
someday i will learn how to open that damn calculator lol

I had a hard time but I was able to run it.
Maybe someone should make a tutorial and put on youtube.

No idea if it runs on android or iOS...

Cheers

Baura · Jan 24, 2017

sixstring2112 said:
someday i will learn how to open that damn calculator lol

as i'm broken and i dont have money to buy cobs this is my way to contribute :

kinda nooby but i hope it helps

hope you can run it sooner or later

cheers

Baura · Jan 24, 2017

http://www.cutter.com.au/prodimages/Bridgelux Vero SE Product Simulator EXPIRES 20170604 Rev. 1.xlsm
bridgelux calculator!!
i havent seen that!!!

beeing a number geek, citiled simulator and now bridgelux simulator is a nice tool to "waste time" smoking joints and wondering about cobs

cheers

sixstring2112 · Jan 24, 2017

Baura said:
as i'm broken and i dont have money to buy cobs this is my way to contribute :
View attachment 3883904

kinda nooby but i hope it helps

hope you can run it sooner or later

cheers

Im not sure i have any of those type screens on my windows 10 pc.it keeps telling me to go to the app store and download a program to open jar files,then i do that but it still wont open,just says to download another app.so now i have like 4 dif apps to open jar files and still nothing.i guessI will mess with it some more tonight . maybe it would be easier on my galaxy note 4 phone because its more automatic on these types of downloads?

Baura · Jan 24, 2017

sixstring2112 said:
Im not sure i have any of those type screens on my windows 10 pc.it keeps telling me to go to the app store and download a program to open jar files,then i do that but it still wont open,just says to download another app.so now i have like 4 dif apps to open jar files and still nothing.i guessI will mess with it some more tonight . maybe it would be easier on my galaxy note 4 phone because its more automatic on these types of downloads?

you´re telling me that your w10 does not have msdos?

take a look at the attach

cheers

DIY COB LED Calculator

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