Wire hookups and LEDs? - HobbyTalk
LinkBack Thread Tools Search this Thread
post #1 of 4 (permalink) Old 02-28-2010, 01:56 PM Thread Starter
New Member
Join Date: Feb 2010
Posts: 2
Question Wire hookups and LEDs?

hi this is 10sparklebot, i am working on a project, and i have the LEDs, solder, a place to put the lights, and hook up wires. but i don't have resistors. Does anybody know the formula for figuring out the resistors needed?

Secondly, how do i put an on/off switch in between the wire to my battery and the wires to my LEDs? i am basically making a light fixture i guess. i am using a 6 volt battery, as long as i use resistors, the lights should last a while right? it wont drain the battery?
10sparklebot is offline  
Sponsored Links
post #2 of 4 (permalink) Old 03-02-2010, 12:14 PM
GhostKnight's Avatar
Join Date: Nov 2009
Location: Vienna, Austria, Europe
Posts: 23
It all depends on the current you want to use for the LEDs. You need to know the Voltage/Current requirement of 1 LED. Would be nice if you could post those values. Then I can lead you through the calculations. I think I've posted the before, but I'll be a nice guy and do 'em again .

In the meanwhile I'll draw a schematic for you, so you know how to wire that thing.


GhostKnight is offline  
post #3 of 4 (permalink) Old 03-03-2010, 11:55 PM Thread Starter
New Member
Join Date: Feb 2010
Posts: 2
Red face thanks

i actually found what i needed. Thank you! i was so confused at first. I burnt myself a few times though with the soldering gun like sometimes the solder sparked. ouch! now i just need to figure out how im gonna write a 2 pg paper about the optical principles and physics used with the piece. god i HATE PAPERS!!!!!!!
10sparklebot is offline  
post #4 of 4 (permalink) Old 01-21-2013, 02:01 PM
Join Date: Jul 2009
Posts: 10
If you do a google search for Single led calculator you will find an online tool that work out the value of the resistance for you given the forward voltage and current for the LED together with supply voltage.
AnthonyC is offline  


Quick Reply

Register Now

In order to be able to post messages on the HobbyTalk forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome