Invention of the day: The USBottle

[RoGeorge]

Tadaaamm!!!  Proudly announcing today the mirabulous invention of the USB...ottle!!! 

Before this, tried 3-4 different USB LED lamps.  All failed after couple of months at 24/7.
The invention saves the life of LEDs by using an USB incandescent light bulb instead. 



It is placed behind the keyboard, as seen in the pic, to make the keys visible in the dark.
The incandescent light bulb is marked 6.3V/0.3A.  At 5V it drowns 200mA from the USB.

[jpanhalt]

Be sure to patent it.  You don't want to leave $20,000 (Nigerian) on the table.

[magic]

It is placed behind the keyboard, as seen in the pic, to make the keys visible in the dark.
The incandescent light bulb is marked 6.3V/0.3A.  At 5V it drowns 200mA from the USB.

Please reduce your carbon footprint and learn to touch type

[RoGeorge]

Be sure to patent it.

Indeed, has multiple design features:



 

[Gregg]

Perhaps your invention was inspired after drinking the entire contents of that bottle. 

[SiliconWizard]

Probably.

[pardo-bsso]

Nice.

I miss thinklights.

[Bryn]

Would probably save you more energy than turning on the lamp just to see the keyboard

But yeah, neat little invention 👍

[EPAIII]

  ? ? ?

[SiliconWizard]

? ? ?

Yeah, it's not even connected to the cloud or something.

[Halcyon]

? ? ?

Yeah, it's not even connected to the cloud or something.

Needs Bluetooth, and a monthly subscription.

[Bryn]

Needs Bluetooth, and a monthly subscription.

It needs ad revenue also

[Nominal Animal]

All kidding and jokes aside, LEDs need a surprising amount of heatsinking to work reliably long-term.  LED strips are particularly susceptible for this.

I feel your annoyance at getting a just right illumination in a favourite setting.

One of my own projects is replacing an old halogen dimmable footlamp/reading lamp with goosenecks with suitable LEDs, but I'm not happy with the ones I've found.  I've been thinking about making a pair of alu core one-sided LED boards (with many warm and neutral white LEDs, say 2700K and 4000K, underdriven to give longer lifetime), and use some thermal adhesive to connect a larger heatsink on the back.  I even have room for multiple wires, so I don't need to put the constant current drive on the board.  The idea is to use a single pot/encoder to control both the brightness and the color temperature, using one of the small cheap MCUs.  This PCB even fits in the existing central control enclosure; I'm just not happy with only two outputs (no color balance) or with the COB leds I have.

[coromonadalix]

strange timing      i saw yesterday an  usb led dongle at Dollorama  ?? in my town ??

[SiliconWizard]

I think you should power a LED strip from USB, placed against a PV panel and then use the output of the PV panel to power an incandescent light bulb.

[crispus]

Powered by the hard liquor (pălinca-i la putere) 

[RoGeorge]

? ? ?

Yeah, it's not even connected to the cloud or something.

Needs Bluetooth, and a monthly subscription.

All I can do is this, a resistor to Vcc, so the OS will detect the insertion of a new USB device. 

[magic]

This is the most wasteful circuit I have ever seen.
All you need is 2k2 to 5V and 4k7 to GND.
Thevenin equivalence and all that.