Jim-p is correct. They are not 3 watts, but they still get hot and are really bright.
I have IR, Dark red, red, orange, blue, warm white, and cool white LEDs and an assortment of drivers 350ma, 500ma, and 700ma.
I have a infrared setup with 4 IR leds and 500ma driver powered by 12 volts.
Just FYI, the LEDs I posted a link to above are not on a 20mm PCB type material.
It is a 20mm aluminum plate with a electrically isolated silkscreen with the solder pads on it.
I know, I found 10 pieces of heatsink only (Aliexpress), with traces already made for 1$, but available in a month...I'll cut myself a band of 2.5mm thick aluminium and I'll stick the leds to it with thermal paste for CPU.
I can copy your project, but use all the 10 leds with that driver. Delivery time - still one month. Until then more experimenting with 0.5$ resistors of 5W.
If I want stuff cheap, I use AliExpress.
If I want stuff soon, I use LEDSupply.
I'm in Florida USA
Since the specifications are wrong, you basically have no idea what you have. I would not use a current higher than 350mA.
I found some equivalent, with faster shipping time. I'm in Europe, and even if I find this product in our stores, it will be at least 4 times more expensive.
https://www.aliexpress.us/item/1005007432678328.html?spm=a2g0o.productlist.main.97.2fb77771EnpJFE&algo_pvid=c57b593b-bf59-450d-8c17-27218ae155c4&algo_exp_id=c57b593b-bf59-450d-8c17-27218ae155c4-48&pdp_npi=4%40dis!RON!21.39!21.39!!!4.38!4.38!%402103963717354680183531118eac4f!12000040733350166!sea!RO!111386869!X&curPageLogUid=TZ3U4Zkgz5PB&utparam-url=scene%3Asearch|query_from%3A
!
That is about the same as the Mean Well drivers.
If i'm not wrong, the 'D' pad should be a on/off pwm input.
No. The buck reg will just stop outputting before then. It'll provided 'constant' voltage, briefly, and then switch to constantly off.
Anyway - with just new batteries it's max current and downward from there.
Got it. Finally assembled.
Surprisingly low forward voltage.
Ps. nice resistors
What's to be done with an 'infrared flashlight' ?
One of my sons wanted night vision googles. The cheap option: surveillance camera (analog, 12V) with sensitivity to IR and maybe some IR LEDS included, an IR flashlight for visibility at farther distance and an analog monitor to mount inside a VR box. Original idea here [https://www.instructables.com/Homemade-Night-Vision-Googles/]
Later edit: I'm a complete idiot. The device is available already assembled for 5$, you only have to give it 12V. I paid way more for the 10 pcs LED, resistors, time and one fried (my fault) 1.5$ 12V converter.
48 IR LED 940nm PCB 12V
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