- Joined
- Nov 14, 2009
- Messages
- 756
- Points
- 0
The LED: 3 W High Power Blue 445 nm LED DIY Item, NEW - eBay (item 110701310128 end time Jul-13-11 19:04:50 PDT) ($2.20 shipped)
Shipping: The LED shipped the same day I ordered it, but the shipping was not tracked. It came in a plain white envelope, wrapped in saran wrap. I was not a fan of the shipping method, but the LED works.
Voltage and current: The LED wants 3.4-3.8 volts, the voltage of a Lithium Ion or Lithium Polymer cell. It says it wants 620ma, but I think I wants a lot more then that. I started it at 3.7 volts, with no driver, and it worked. I then stepped it up to 5 volts. At 5 volts it is a LOT brighter, but also a lot hotter, it makes that big heat sink assembly hot to the touch in ~3 mins. The my ammeter says it is consuming ~900ma @ 5v.
445nm? I dont own (or have seen) a 445nm laser, but I do own a 405nm, and I have seen a 473nm, and based on other people's pictures, it looks like 445nm. On the distant walls it looks like 405nm, but when aimed at a close wall, it looks like what I imagine 445nm to look like. It will make GITD stuff glow. Its viewing angle is ~160 degrees, it lights up a room's walls and ceiling almost completely when on the floor.
Pics:
On the heat sink
Powered up @ 5v
Close up
Shipping: The LED shipped the same day I ordered it, but the shipping was not tracked. It came in a plain white envelope, wrapped in saran wrap. I was not a fan of the shipping method, but the LED works.
Voltage and current: The LED wants 3.4-3.8 volts, the voltage of a Lithium Ion or Lithium Polymer cell. It says it wants 620ma, but I think I wants a lot more then that. I started it at 3.7 volts, with no driver, and it worked. I then stepped it up to 5 volts. At 5 volts it is a LOT brighter, but also a lot hotter, it makes that big heat sink assembly hot to the touch in ~3 mins. The my ammeter says it is consuming ~900ma @ 5v.
445nm? I dont own (or have seen) a 445nm laser, but I do own a 405nm, and I have seen a 473nm, and based on other people's pictures, it looks like 445nm. On the distant walls it looks like 405nm, but when aimed at a close wall, it looks like what I imagine 445nm to look like. It will make GITD stuff glow. Its viewing angle is ~160 degrees, it lights up a room's walls and ceiling almost completely when on the floor.
Pics:
On the heat sink
Powered up @ 5v
Close up
Attachments
Last edited: