- 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.(5 votes)
- Any device can draw too much current! Limiting resistors are a very common practice to prevent this. I would imagine, since LEDs usually only operate with voltages to the tune of several millivolts (mV), that the current you want is quite small. As suggested above, pause the video and pull up a resistor color code chart - it will be a fun learning exercise to find the resistance! :)(2 votes)
- How strong of LED lights are they? What would it take to make one of these at home?(6 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?(3 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".(3 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.