- 3rd graders build robots at Santa Rita Elementary School
- SPDT switch
- Spout's sliding SPDT switch
- Spout lights
- Spout motor
- Spout battery configuration and polarization
- Spout's reversing circuit and final assembly
- Spout circuit
- Rotary switched spout circuit
Created by Karl Wendt.
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- 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.(4 votes)
- 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(2 votes)
- How strong of LED lights are they? What would it take to make one of these at home?(4 votes)
- 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 :)(3 votes)
- How do you connect all of the wires?(2 votes)
- At0:29, 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".(0 votes)
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.