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geekhack Community => Other Geeky Stuff => Topic started by: pon10 on Mon, 03 July 2017, 16:49:13

Title: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: pon10 on Mon, 03 July 2017, 16:49:13
Hey good people

I have a bunch of LEDs i bought random places for some upcoming builds, I am still a little new to DIY electronics
Just need a good advice how to "manage" your LEDs and view them turned ON, easy without putting them in a switch for testing colors and compare brightness etc.

Any good, lets say Usb tool out there?  :-*

just something that have resisters already and less time "source" consuming - pre built little usb power thingy :)

[attachimg=2] 

I need to get stuff sorted :p

[attachimg=1]

Title: Re: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: Tactile on Mon, 03 July 2017, 18:47:33
You could just get an LED tester like this (http://www.ebay.com/itm/2-150mA-Mini-Handy-LED-Tester-Box-for-Light-emitting-Diode-Bulb-Lamp/152367048582).
Title: Re: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: pon10 on Tue, 04 July 2017, 01:53:29
Quote from: Tactile on Mon, 03 July 2017, 18:47:33
You could just get an LED tester like this (http://www.ebay.com/itm/2-150mA-Mini-Handy-LED-Tester-Box-for-Light-emitting-Diode-Bulb-Lamp/152367048582).

Awesome thank you! i have been inputting that exact keyword but no luck  :-X

Edit: Got this (http://www.ebay.com/itm/400158105115) little fella
Title: Re: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: rowdy on Tue, 04 July 2017, 21:40:30
FWIW I have a breadboard like you illustrated, but it has a power board plugged into one end.  I just use that with a resistor.  Simple and effective.
Title: Re: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: pon10 on Wed, 05 July 2017, 02:50:19
Quote from: rowdy on Tue, 04 July 2017, 21:40:30
FWIW I have a breadboard like you illustrated, but it has a power board plugged into one end.  I just use that with a resistor.  Simple and effective.

Cool!, i wanted todo that but it has been 15+ years since school i am just starting to get into diy hoppy electronics and learning again :) but since this is the way to go and more fun in what i ordered above :)

i would be able maybe to build one with something like THIS (http://artofcircuits.com/product/mb102-breadboard-power-supply-module-3-3v5v) power supply module right? and just use the power from the usb? instead of 12v
Title: Re: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: rowdy on Wed, 05 July 2017, 21:41:27
Quote from: pon10 on Wed, 05 July 2017, 02:50:19
Quote from: rowdy on Tue, 04 July 2017, 21:40:30
FWIW I have a breadboard like you illustrated, but it has a power board plugged into one end.  I just use that with a resistor.  Simple and effective.

Cool!, i wanted todo that but it has been 15+ years since school i am just starting to get into diy hoppy electronics and learning again :) but since this is the way to go and more fun in what i ordered above :)

i would be able maybe to build one with something like THIS (http://artofcircuits.com/product/mb102-breadboard-power-supply-module-3-3v5v) power supply module right? and just use the power from the usb? instead of 12v

Yep - pretty much exactly that one.

I do not have a suitable USB cable to power it, but I do have an old wall wart that happens to work well.

You can also change a couple of jumpers on it to switch from 3.3V to 5V.  I have mine on 5V.
Title: Re: LEDs - Any good way to view and compare them without adding them to a switch?
Post by: pon10 on Tue, 18 July 2017, 13:26:16
Quote from: rowdy on Wed, 05 July 2017, 21:41:27
Quote from: pon10 on Wed, 05 July 2017, 02:50:19
Quote from: rowdy on Tue, 04 July 2017, 21:40:30
FWIW I have a breadboard like you illustrated, but it has a power board plugged into one end.  I just use that with a resistor.  Simple and effective.

Cool!, i wanted todo that but it has been 15+ years since school i am just starting to get into diy hoppy electronics and learning again :) but since this is the way to go and more fun in what i ordered above :)

i would be able maybe to build one with something like THIS (http://artofcircuits.com/product/mb102-breadboard-power-supply-module-3-3v5v) power supply module right? and just use the power from the usb? instead of 12v

Yep - pretty much exactly that one.

I do not have a suitable USB cable to power it, but I do have an old wall wart that happens to work well.

You can also change a couple of jumpers on it to switch from 3.3V to 5V.  I have mine on 5V.

Cool! i want to make one, but time :)

Here if anybody stumble upon on this thread i got this very very cheap thinghy, it works quick and have clicky switches :)
[attachimg=1][attachimg=2]