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Current time:0:00Total duration:3:00

Spout's reversing circuit and final assembly

Video transcript

so this circuit combines the best of both worlds we've got the forward and the reverse capability with this one because we added something called a single-pole double-throw lever switch it's called the lever switch because it's got a little lever here and it's a single-pole double-throw because there's one pole and two throws and that's the term for these electrical contacts here so we're going to go ahead and and turn our switch on which will let power flow you can see the motor is spinning and if we want to back the motor up we want to go the opposite direction we can push on this switch and you can see it causes the motor to reverse and what's happening is the contact inside that switch is switching from the red wire which is the positive lead to the black wire which is the negative that causes the power to flow the other direction and if you're asking how does it do that well it does that because it's flowing through only one battery at a time so it's going through this battery in this direction under normal circumstances and then when the switch is bumped it gets it goes and flows backwards through this battery and so that causes the motor to flip back and forth now if we take that and we combine it with another switch and another motor we can make the spouts turn around and going back and go back and forth in different directions okay so this is the combination of all the previous circuits that we've talked about we've got our lights and our light switch circuit here I believe that's this circuit so you can see that the lights turn on when we when we turn that circuit and then we have our motor circuit and we have our two single-pole double-throw lever switches here here's another example of what it looks like on the inside you can see there and we have our extended we basically extended the switch by putting these paper clips just hot gluing the paper clips on to the end and that makes it easier for the switch to bump against the wall it also gives it some more leverage so it doesn't take quite as much force to get the switch to trigger okay let's go ahead and turn it on so you can see it's moving in this direction it's moving forward it'll be carrying spout in the forward direction right now and then if it gets bumped you'll notice that fit when this side gets bumped this switch backs up our this motor backs up and then if this one gets bumped this motor backs up again so what the switch is doing is it's switching the power flowing from one battery right now it's flowing with from one battery in one direction switches it to the other battery that's flowing in the other direction and causes the motor to spin backwards which means that spout can back up if they both get hit they go both get hit they both back up so that's what's going on inside of spout