USB powering LEDS - how to do it...not working

[fadetoblack22]

I've connected up an LED strip to a DC power supply and it's working fine. Now, I want to be able to power it from the back of my TV USB port instead.

The port says it's 5v and suitable for a HDD, so I'm assuming it has enough power for a short LED strip.

I don't really know what I'm doing but I stripped two USB cables and tested them both instead of the DC power adapter, however neither of them work.

https://drive.google.com/file/d/123qMjc5nAXiRqPrs7rXl7ElRhuyXWKPR/view?usp=sharing

https://drive.google.com/file/d/126PL5yfnfXB8fBga3RGeuHaxl_VEARDC/view?usp=sharing


Any ideas why or what I need to do?

 

[jay32267]

I can't see the pics....don't have account.

Regardless...

The red and black wire are the wires you use to get 5 volts. Red is positive.

If you are doing this and they still don't light....I'm think that most likely the strip draws too much current for the port.

 

[fadetoblack22]

Thanks for the reply...Maybe the sharing settings were not on...here they are again:

https://drive.google.com/file/d/126PL5yfnfXB8fBga3RGeuHaxl_VEARDC/view?usp=sharing

IMG_20200617_173354.jpg

drive.google.com

It's a HDD labelled port and the LED strip is less than a metre long so I can't see it drawing more power than a hard disk.

I'm sure it's something I've done wrong but I can't work out what haha.

 

[jay32267]

Thanks for the reply...Maybe the sharing settings were not on...here they are again:

https://drive.google.com/file/d/126PL5yfnfXB8fBga3RGeuHaxl_VEARDC/view?usp=sharing

IMG_20200617_173354.jpg

drive.google.com

It's a HDD labelled port and the LED strip is less than a metre long so I can't see it drawing more power than a hard disk.

I'm sure it's something I've done wrong but I can't work out what haha.

Do you have any electrical specs for the strip?

 

[hang-the-9]

Why not get a usb power already made for an led strip like this https://www.newegg.com/p/2S7-01PM-0...x-x-Ah5QYq2Q8loIefwaAuBbEALw_wcB&gclsrc=aw.ds they make different ones depending on what connection yours has

 

[fadetoblack22]

Thanks for the reply...Maybe the sharing settings were not on...here they are again:

https://drive.google.com/file/d/126PL5yfnfXB8fBga3RGeuHaxl_VEARDC/view?usp=sharing

IMG_20200617_173354.jpg

drive.google.com

It's a HDD labelled port and the LED strip is less than a metre long so I can't see it drawing more power than a hard disk.

I'm sure it's something I've done wrong but I can't work out what haha.

I think it's 5v, 6amp.

 

[fadetoblack22]

Why not get a usb power already made for an led strip like this https://www.newegg.com/p/2S7-01PM-0...x-x-Ah5QYq2Q8loIefwaAuBbEALw_wcB&gclsrc=aw.ds they make different ones depending on what connection yours has

Just because of the cost really.