Here you go. Check out the consistency. It might be closer to 1.5%. Pretty impressive for being made by two different companies. Maybe the same original company? I noticed the white diffusers on the receptor had a different level of translucence so they are definitely different meters.
TA is using an HS1010A meter which is not very expensive, maybe $20 at most. If you were worried about the original meter breaking, you could buy a second meter as a back up and compare it to the original just to make sure it’s within range or if it reads a tiny bit high or low. It’s not a bad idea.
As Jason said, the calibration is in the sphere. I have 2 HS1010A meters and had an LX1330B and they were all within a few percent of each other with in the tube readings. I have swapped the meters a few times when batteries ran low and noticed no difference when testing my “standard” lights.
I picked the HS1010A because it got pretty good reviews and it has worked very well in my sphere, it is simple and quick to use. Plus the sensor mounts into the PVC with a little work and does not need any glue. Thus allowing you to switch meters easily.
Hey TA, thanks for offering us a lumen tube… i started to look for a lumen tube on feb,21,2018 and asked one of the cpf member name alex. He couldnt do it. . two months later, boom. My wish cames true… lol.
I had been wanting to do this for some time actually but could never figure out a method that would be possible to replicate consistently. The foam I used was far too custom for this kind of thing.
If anyone knows someone that needs or wants a Sphere on CPF/Reddit/facebook please feel free to let them know a batch is being made. I don’t do social media unless forced so I don’t have accounts on there (well I do have a CPF account but every time I post something it seems to get removed within the day…).
I will be figuring out exactly how many I am going to order and getting that process started later today.
Yeah, this is awesome, I’ve wanted to make one of these for years, but just wasn’t inclined to do so or even know where/how to begin. Especially nice that it just reads out the lumens instead of converting the Lux reading. It will be a huge advantage for building, modding, comparing and reviewing. Again thanks Texas_Ace for doing this, it’s a great service to the BLF community.
I assume Skylumen is ok with that? Never been in a facebook group so not sure what the “policy” is lol.
Just got a member from facebook that wants a sphere.
I am now debating between ordering 30 to fulfill these orders or reinvesting some of the money and ordering 50. Just not sure how well they will sell after this initial rush.
I am getting my shopping carts together now, this is not a cheap order lol, good thing I took payments in advance.
Very interesting, I would never of guessed that lol.
I have never actually talked to him before, just never had a reason. Keep meaning to get in contact, this might be a good excuse.
It would be interesting to see how the readings compare with his own. I took a very different approach to calibrating my sphere then most by using LED data sheets and test vs flashlights.
I figure that Cree has everything to loose if they mis-represent their LED’s capabilities on a data sheet that is being sold to engineers with the capability of testing to make sure it does what it should.
While flashlight manufactures selling to the general public that does not even know what LED is in the light have everything to gain by putting a larger number then the competitors.
Ok, I got the Lux meters ordered so all that is left is to get the diffusing sheets cut. I will do that later this week.
I also updated the list, looks like we are just about sold out of the 3.5”. I think I got the ratio of 3.5” to 4.5” wrong on the order but the case sizes made it difficult to get exactly what I wanted.
Once I see how hard these are to make and if there is still demand I might make a few more just to have on hand for anyone that needs them, they would just need to pay for shipping as well.