Invention of the day:  The USBottle - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: September 25, 2024, 03:10:19 pm
content: 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.

author: jpanhalt
author_rank: Super Contributor
timestamp: September 25, 2024, 06:23:05 pm
content: Be sure to patent it. You don't want to leave $20,000 (Nigerian) on the table.

author: magic
author_rank: Super Contributor
timestamp: September 25, 2024, 07:22:38 pm
content: Quote from: RoGeorge on September 25, 2024, 03:10:19 pmPlease reduce your carbon footprint and learn to touch type

author: RoGeorge
author_rank: Super Contributor
timestamp: September 25, 2024, 08:02:30 pm
content: Quote from: jpanhalt on September 25, 2024, 06:23:05 pmIndeed, has multiple design features:

author: Gregg
author_rank: Super Contributor
timestamp: September 25, 2024, 09:57:40 pm
content: Perhaps your invention was inspired after drinking the entire contents of that bottle.

author: SiliconWizard
author_rank: Super Contributor
timestamp: September 25, 2024, 10:08:48 pm
content: Probably.

author: pardo-bsso
author_rank: Frequent Contributor
timestamp: September 26, 2024, 12:47:03 am
content: Nice.I miss thinklights.

author: Bryn
author_rank: Regular Contributor
timestamp: September 26, 2024, 05:43:38 am
content: Would probably save you more energy than turning on the lamp just to see the keyboardBut yeah, neat little invention 👍

author: EPAIII
author_rank: Super Contributor
timestamp: September 26, 2024, 09:28:05 am
content: ? ? ?

author: SiliconWizard
author_rank: Super Contributor
timestamp: September 26, 2024, 07:49:10 pm
content: Quote from: EPAIII on September 26, 2024, 09:28:05 amYeah, it's not even connected to the cloud or something.

author: Halcyon
author_rank: Unknown
timestamp: September 27, 2024, 01:22:09 am
content: Quote from: SiliconWizard on September 26, 2024, 07:49:10 pmNeeds Bluetooth, and a monthly subscription.

author: Bryn
author_rank: Regular Contributor
timestamp: September 27, 2024, 03:41:09 am
content: Quote from: Halcyon on September 27, 2024, 01:22:09 amIt needs ad revenue also

author: Nominal Animal
author_rank: Super Contributor
timestamp: September 27, 2024, 10:40:46 am
content: 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 ajust rightillumination 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 PCBeven 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.

author: coromonadalix
author_rank: Super Contributor
timestamp: September 27, 2024, 10:55:04 am
content: strange timing i saw yesterday an usb led dongle at Dollorama ?? in my town ??

author: SiliconWizard
author_rank: Super Contributor
timestamp: September 27, 2024, 09:18:34 pm
content: 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.

author: crispus
author_rank: Regular Contributor
timestamp: September 27, 2024, 09:38:46 pm
content: Powered by the hard liquor (pălinca-i la putere)

author: RoGeorge
author_rank: Super Contributor
timestamp: September 29, 2024, 01:42:18 pm
content: Quote from: Halcyon on September 27, 2024, 01:22:09 amAll I can do is this, a resistor to Vcc, so the OS will detect the insertion of a new USB device.

author: magic
author_rank: Super Contributor
timestamp: September 29, 2024, 02:45:27 pm
content: 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.