FiddlerMD
Well-known member
OK here's my test unit.
So for the test, what I did is set my camera (Nikon D70s) to manual settings (about 45mm at f4 and 1/30 of a sec at 800 iso). I did not tweak white balance. The lights in the room where i took these a particularly yellowish hence the colors. anyways. This is strictly for comparison purposes as these pics don't really tell how much light this thing gives.
I did the test several ways
1 - with LED panel with 9V battery that's way past its prime
2 - with a StreamLight TwinTask 2D flashlight in low and high settings
3 - with LED panel with standard DVX battery (D54) fully charged. *NOTE* since I use no resistors on the board (the pot you see in the pics was bypassed), after a few secs in this configuration it started to get warm so odds are i am overdriving the LED's in this case.
This is the pattern of LED's on the board:
Here is the subject w/ only ambiend lighting - I was sitting about 4 - 5 feet away
Here it is with 9V battery
Here it is with Streamlight on low and high settings[/img]
Here it is overdriven w/ dvx battery
[img]http://www.controlgenie.com/led/withfull.jpg
Conclusions:
I definitely need to find the proper resistor to put on here so the lights are not overdriven. Once I can do that, I will do a longevity test with a DVX battery. I also think some sort of diffusion is necessary since the spot is pretty narrow. The LED's I used, I got on ebay about 2 years ago in a big lot (About 100 of them). I don't know the specs or color temp on them but they look to be a bit towards the blue side.
I'll be happy to answer any other question. Next step for me is to also mount this into some sort of case.
So for the test, what I did is set my camera (Nikon D70s) to manual settings (about 45mm at f4 and 1/30 of a sec at 800 iso). I did not tweak white balance. The lights in the room where i took these a particularly yellowish hence the colors. anyways. This is strictly for comparison purposes as these pics don't really tell how much light this thing gives.
I did the test several ways
1 - with LED panel with 9V battery that's way past its prime
2 - with a StreamLight TwinTask 2D flashlight in low and high settings
3 - with LED panel with standard DVX battery (D54) fully charged. *NOTE* since I use no resistors on the board (the pot you see in the pics was bypassed), after a few secs in this configuration it started to get warm so odds are i am overdriving the LED's in this case.
This is the pattern of LED's on the board:
Here is the subject w/ only ambiend lighting - I was sitting about 4 - 5 feet away
Here it is with 9V battery
Here it is with Streamlight on low and high settings[/img]
Here it is overdriven w/ dvx battery
[img]http://www.controlgenie.com/led/withfull.jpg
Conclusions:
I definitely need to find the proper resistor to put on here so the lights are not overdriven. Once I can do that, I will do a longevity test with a DVX battery. I also think some sort of diffusion is necessary since the spot is pretty narrow. The LED's I used, I got on ebay about 2 years ago in a big lot (About 100 of them). I don't know the specs or color temp on them but they look to be a bit towards the blue side.
I'll be happy to answer any other question. Next step for me is to also mount this into some sort of case.
