WTS: Calibration lights for DIY integrating spheres / lumen tubes - 67 € -

333 posts / 0 new
Last post
maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland
Newlumen wrote:
Hi maukka, please pm me your paypal info and price.. i am ready to purchase. Thanks.

I added you to the list. I’ll PM you with the details early next week when I have measured the next batch of lights.

Newlumen
Newlumen's picture
Offline
Last seen: 1 year 5 months ago
Joined: 05/27/2017 - 00:19
Posts: 2092
Location: United states
maukka wrote:
Newlumen wrote:
Hi maukka, please pm me your paypal info and price.. i am ready to purchase. Thanks.

I added you to the list. I’ll PM you with the details early next week when I have measured the next batch of lights.

Ok. Thanks.

nkresho
nkresho's picture
Offline
Last seen: 4 months 1 day ago
Joined: 11/26/2017 - 20:36
Posts: 233
Location: Pittsburgh, PA, USA

So, I need some confirmation on my NW numbers. Reference numbers in yellow.

Does it make sense that the multiplier should be higher for the CW than the neutral? For some reason, I was thinking it would be the other way. Everyone says CW read higher, which makes me think I would need a lower multi for them, to bring them down.

Using a Dr Meter LX1330B in my sphere.

Getting an average of 0.1994 for the NW and 0.2081 for the CW.

The convoy light is very consistent with different battery voltages and light head temperature (back to back tests). The 348 is a bit more sensitive to the voltage and more so with the temperature (back to back tests always show lower numbers).

Do I keep digging or call it good?

Maukka, what voltage are your eneloops when you install to test? right off the charger (I get about 1.51v) or rested (I get 1.38v that way).

I also graphed (linear) the difference across color temps I have on hand. I’m hoping the linear relationship is a good way to go. Way easier with just two data points.

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

I test with the Eneloops right off the charger (within 20 minutes usually). I would think that the voltage drop when the light is turned on will be much larger than letting them rest for a couple of hours. That’s why I included the 60s number. The light temperature will have a bigger effect than the battery voltage, since the output drops very rapidly at the beginning but not at all after the temperature has settled even though voltage keeps dropping.

It seems your readings are very stable between different tests.

Meters react very differently to different wavelenghts as djozz’s latest lux meter test shows. For example, the noname LX-1330B reads 7.5% low on the 4500K 70 CRI Supwildfire Mitko thrower and 3% high on the 4000K 90+ CRI Sofirn SP33 compared to a good meter.

nkresho
nkresho's picture
Offline
Last seen: 4 months 1 day ago
Joined: 11/26/2017 - 20:36
Posts: 233
Location: Pittsburgh, PA, USA

Awesome. Thank you. I’ll call these results good, based on this particular dr meter. I’ll just re-run calibration every once in a while to make sure the sphere is reading what I expect.

Nicest part is now that I have your calibrated test lights, I can grab a better meter, down the road, and recalibrate accordingly.

These test lights are really a game changer for the entire hobby. Thanks again for offering them.

The_Flashaholic
The_Flashaholic's picture
Offline
Last seen: 1 week 1 day ago
Joined: 04/05/2017 - 12:46
Posts: 1213
Location: Wakefield
maukka wrote:
The S2+ uses PWM on the low and mid modes, but the integration time in lux meters is much slower than the 4.6 kHz on the light output. Shouldn’t affect the readings at all.

Is the PWM what causes the S2+ to buzz on mid mode?

My 4K Lumen Whore Reviews (MS18, X70, MS12, DX80, X80-GT, X45vn etc) - http://www.youtube.com/c/FLASHAHOLIC_TV

leroycp
Offline
Last seen: 5 months 12 hours ago
Joined: 12/27/2015 - 19:24
Posts: 738
Location: Stewart TN

Please add to list for one set batch 4.

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

All shipped! Thumbs Up

jdavis
jdavis's picture
Offline
Last seen: 1 year 1 month ago
Joined: 08/18/2018 - 16:09
Posts: 21
Location: SC in USA

maukka,

If these are still available I would like to purchase a set. Please let me know if you are still offering these. Thank you.

Jeff

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Yeah, I have a couple of sets ready to ship immediately. Will PM you.

jdavis
jdavis's picture
Offline
Last seen: 1 year 1 month ago
Joined: 08/18/2018 - 16:09
Posts: 21
Location: SC in USA

maukka,

Thanks. I have sent money via PayPal and returned your PM with the info you requested. Thanks for letting me have a set of these.

Jeff

Kasperrr
Offline
Last seen: 5 months 2 weeks ago
Joined: 09/18/2018 - 15:47
Posts: 7
Location: Germany

Hi maukka,

 

I would like to order one calibration set. I hope you still offering these. Please contact me. Thanks!

 

Kasper

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Yes, one set left for now. Takes a week for me to prepare more after this. PM sent.

Funtastic
Funtastic's picture
Offline
Last seen: 2 days 4 hours ago
Joined: 06/26/2014 - 02:14
Posts: 2064
Location: New Zealand

Hi Maukka,

I’d be keen on a kit shipped to New Zealand. Just received Texas’s PVC Lumen Tube and would like to compare readings.

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Sure thing. I’m out of measured sets, but I’ll probably have some ready next weekend and will PM you then.

Funtastic
Funtastic's picture
Offline
Last seen: 2 days 4 hours ago
Joined: 06/26/2014 - 02:14
Posts: 2064
Location: New Zealand

Awesome, thank you. No hurry

Will different 18650’s effect the calibrated reading? I’d be using the 30Q, NCR18650B or NCR18650GA. Should they read the same on Med?

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

There’s no difference between different batteries, since the S2+ uses current regulators at a very undemanding level.

clemence
clemence's picture
Offline
Last seen: 1 year 6 days ago
Joined: 07/12/2015 - 02:58
Posts: 2474
Location: Bali - Indonesia

Hi Maukka, I’m in for one set.

- Clemence

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland
Funtastic wrote:
I’d be keen on a kit shipped to New Zealand. Just received Texas’s PVC Lumen Tube and would like to compare readings.
clemence wrote:
Hi Maukka, I’m in for one set.

These have been shipped now.

clemence
clemence's picture
Offline
Last seen: 1 year 6 days ago
Joined: 07/12/2015 - 02:58
Posts: 2474
Location: Bali - Indonesia

Great, thanks Maukka

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland
clemence wrote:
Great, thanks Maukka

You okay in there?

edit: doesn’t seem to be close to Bali

clemence
clemence's picture
Offline
Last seen: 1 year 6 days ago
Joined: 07/12/2015 - 02:58
Posts: 2474
Location: Bali - Indonesia
maukka wrote:
clemence wrote:
Great, thanks Maukka

You okay in there?

edit: doesn’t seem to be close to Bali

Yes, I’m okay. Thanks for checking Maukka. We’re in alert mode and stay away from the river and shoreline. Sulawesi shares the same tectonic plate with Bali.

- Clemence

Kame Sennin
Kame Sennin's picture
Offline
Last seen: 1 year 4 months ago
Joined: 09/24/2018 - 14:38
Posts: 347
Location: France

 Hi !

 

Not sure how PM work here Wink so i prefer to double : I'd like to have a lights kit (you have a PM)

Terry Oregon
Terry Oregon's picture
Offline
Last seen: 3 days 18 hours ago
Joined: 10/21/2017 - 17:03
Posts: 616
Location: Beaverton Oregon

I was able to use maukka's calibration light with the Texas Ace Calibrated Lumen Tube in a review 

HERE

 

 

 

 

My reviews: , My personal collection of lights LINK,  J5 Tactical V1 Pro review LINK,  Thirteen Optical Sensors review LINKZebralight SC700d review LINK,  Ray-O-Vac Super Power Sportsman review LINK,  Convoy S2+ color combos LINK,  How To flash D4V2 LINK,  Convoy S21A LINK

vestureofblood
vestureofblood's picture
Offline
Last seen: 1 day 16 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1987
Location: Missouri

Hi Maukka,

I was wondering something. When you use your sphere to test flashlights do you put them on that post in the center of it or do you shine them in thought a hole on the outside? Also does your sphere have a baffle that prevents light from hitting the sensor directly? If yes do you have a picture? Thanks

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

I use the side input port with an additional diffuser. The post inside the sphere is for omnidirectional light sources such as LED/incan bulbs. There’s a baffle between the light source and sensor port.

vestureofblood
vestureofblood's picture
Offline
Last seen: 1 day 16 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1987
Location: Missouri

Ok, thanks. When you put it in from the side is the flashlight butting up against the added diffuser or a piece of glass to make the insertion depth the same each time? Or does that even matter?

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Exactly, the bright end of the light is a couple millimeters inside the sphere pushed against the diffuser. The insertion depth doesn’t really matter as long as it’s not outside the sphere and the depth is the same as when I measure the absorption effect of the light itself with an auxiliary light. The consistency is useful though when measuring several similar lights as I don’t have to measure the absorption for all of them.

DB Custom
DB Custom's picture
Offline
Last seen: 1 day 24 min ago
Joined: 01/13/2013 - 22:28
Posts: 20731
Location: Heart of Texas

Hi Maukka, I am interested in getting your calibration set… 3 of us here in Texas with boxes built from the same source have been talking and we’d like to test our boxes with the same two lights, so we will compare our P-Trap light boxes and see where we all stand based on a single set of calibration lights.

Please inform…

maukka
maukka's picture
Offline
Last seen: 6 months 6 days ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Sure, I’ve got two sets ready to go immediately. Will PM you the details.

Pages