Plans for a bigger and better setup.

I am selling some extra OSRAM LEDs. Let me know if you need any.

leonov@mail.bg

P

Finally I have a working setup!!!

See videos of the setup here and here
I need to put black foil on the sides, sort out how the cables are fixed and also add a switch for the LED frame.

Still thinking to build a custom stand for the PS3Eye and also need to fix the circle lamp on the bottom!!!

P

Extra cheap LED frame

Hi All,

I found the extra cheap 1.00 EUR solution for a LED frame, which comes with the holes already made for the 5mm LEDs and it is 2m long.

In Bulgaria it's called something like "corner strengthener" and it is used in interior wall edges. It's aluminium and very lightweight so you can tape it to your plexiglas.

The LEDs fit nice and tight and are not too easy to pull out. This solution is really good for testing -cheap, cuts with scissors and no hole drilling at all!















cheers,
P

Filter choice

Reading the OSRAM SFH485 datasheet again today - it seems a good idea not to buy a filter until I have the complete wiring of the Urail frames.

The LEDs are 880nm, but this is exactly at 100mA, there is +- 40nm variance depending on the current, chances are I am not going to have the exact 100mA. Based on most LED online calculators (see links on the right) I will get ca. 90mA with my 19V supply. So if I buy the 880nm pass filter from e.g. ebay and my LEDs shine @ 840nm I will not get a single blob.

SO, waiting for the 100 LEDs, install them on the frame,connect everything and measure amperage and then go for the proper filter, maybe one that is 800 to 900nm.

Anyone tried to measure wavelength? how exactly do I do that?

cheers,
P

IR Pass Filter Test #1 - Floppy Disk.

Hi all, Today I spent a lot of time searching for my early 90's achives, which I still have on floppy disks. I chose one and ripped it apart. The LED is a 100 mA, 1.5V, 5mm chinese imported cheap one. The camera is DMC-FZ18.



I'd say I'll go for the real 880nm pass filter, as the cheap solution takes off the brightness of the LEDs/blobs because floppy disks appear to betoo thick.

cheers, P