What is the value of the resistors in Ohms? I'm curious because I didn't know that LEDs could draw in too much current.

In this example, they are using 68 Ohm Resistors. The full part list can be found here: https://www.khanacademy.org/science/discoveries-projects/robots/Spout-Bot-with-Solder/a/parts-list

How strong of LED lights are they? What would it take to make one of these at home?

I was able to find this article on a homemade LEDs http://www.instructables.com/id/How-to-make-cheap-but-very-powerful-LED-bulbs/. Hope this helps :)

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Electrical engineering

Course: Electrical engineering > Unit 7

Lesson 1: All about Spout

Spout lights

Google Classroom

Created by Karl Wendt.

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Jack McClelland
Posted 10 years ago. Direct link to Jack McClelland's post “What is the value of the ...”
What is the value of the resistors in Ohms? I'm curious because I didn't know that LEDs could draw in too much current.
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(4 votes)
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- Michœl
  Posted 9 years ago. Direct link to Michœl's post “In this example, they are...”
  In this example, they are using 68 Ohm Resistors. The full part list can be found here: https://www.khanacademy.org/science/discoveries-projects/robots/Spout-Bot-with-Solder/a/parts-list
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  (2 votes)
mnmariogirl
Posted 10 years ago. Direct link to mnmariogirl's post “How strong of LED lights ...”
How strong of LED lights are they? What would it take to make one of these at home?
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(4 votes)
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- DJ
  Posted 9 years ago. Direct link to DJ's post “I was able to find this a...”
  I was able to find this article on a homemade LEDs http://www.instructables.com/id/How-to-make-cheap-but-very-powerful-LED-bulbs/. Hope this helps :)
  Comment on DJ's post “I was able to find this a...”
  (3 votes)
Mustamir
Posted 9 years ago. Direct link to Mustamir's post “How do you connect all of...”
How do you connect all of the wires?
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- Jason
  Posted 9 years ago. Direct link to Jason's post “you need to take another...”
  you need to take another wire and wrap it aroung each other
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KarateDomo
Posted 8 years ago. Direct link to KarateDomo's post “that light and that proje...”
that light and that project is AMAZING!
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katie foskey
Posted 8 years ago. Direct link to katie foskey's post “are we going to make a ro...”
are we going to make a robot?
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Dustin Daub
Posted 9 years ago. Direct link to Dustin Daub's post “how much does this cost ?”
how much does this cost ?
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mojammelkhan567
Posted 8 years ago. Direct link to mojammelkhan567's post “how strong a spot light”
how strong a spot light
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Michael.gianghia
Posted 8 years ago. Direct link to Michael.gianghia's post “you said that you would l...”
you said that you would let us know what is inside but the video stoped
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MooMoo PooPoo
Posted 8 years ago. Direct link to MooMoo PooPoo's post “At 0:29, he said "we will...”
At
0:29
, he said "we will take a closer look at what is inside the switch", but did he mean "we will take a closer look at what is inside the switch in the next video".
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Hannah
Posted 8 years ago. Direct link to Hannah's post “what material would I nee...”
what material would I need to get ?
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Video transcript

Ok and so you can see here we've got the circuit for our lights and it's a pretty basic circuit. We've got our two AA batteries together they produce 3 volts. The power is running through our switch. Turn the switch on and the lights come on. Notice there's two resistors here - those prevent the LEDs from drawing too much current and burning out. The switch opens and closes and lets the power go through. We'll take a closer look at what is inside the switch.