everyone is this monica and welcome back to construction step and today we are gone to talk about sober ok so i know lastly that of electronics that we did before and i know we've done solar but i'm always looking for what i can build with my kids that's easy and awesome had is really great i think kit that i used w i and they're not too expensive and i'm surprised but you have like several kids you might want to come do something or cheaper so i look around a lot and want to places and stuff sometime i find in an on e bay and i thought these little this little kit on e bay is really nice and i actually like it i built it several times and i have built  one of my groups which is a little older i haven't bought it with someone younger kids so i think with these i'm going to stay probably the second grade in a but not sure yet the one i did that the other last season i think that one you can do in any grade this one takes a little bit more and we're going to do it today but we'll talk about a little bit so i'm i finish it all today and i might have to do it next time at my next hour my next workshop so let's look at this so this is really nice it's very simple you have your wheel and your axle which we know wheel in iraq soles are simple machines right so that's here you can tell when you add it to and  it's id l e r gear because it's just extends to gear train and that's what this is genes for because it would been hard for you to put wheels if you went from i may have a look at the design  your gear design depends on what you ultimately want to do and in this design they put the wheels here and we can do it here with this here or right here so this is what they did so they have the compound here here and solar panel and the solar panel is going to come burnt the heat right so it's always about energy and the sunlight we can write sunlight the heat from the sunlight to actually electricity and that's what the solar panels want to do for us now one of the things you can do and i've thought about and which i haven't done is actually set and the circuit up here where you can switch between  battery and a solar and i haven't done that yet i just use it right up box and we're doing this in my class one so what i'm going to do in other classes i think is easy to do so and let's look at this  have this light that we could actually help us out some but finding the actually of this work before now i'm trying to show you it's not working is that something i have to say i'm very disappointed to hear i had this working before and now it's not working at all but you see it moving so with the sunlight that's going to move the one thing about this this car when you make you have to really be careful how the gear inside the pinion gear make sure it's not touching the the only thing it depends on the solar panel you use it because if you have a small solar panel this is a twenty watt light and it doesn't work on my other one i did i think the other one i have have a fifty halogen so it really just depends on the solar panel so and this is just like with the sun like you know you got it angle it in so it's a little harder it's not i mean the sun is easier if outside testing it but this is just give us your if you're inside with kids and you want to build this in is that great outside and have these lights are tested and put it aside for when it's a sunny day and then test it so let's talk about the building now i did i say i found these on e bay and i think they're really nice  and i have to give have to say this sometime i'll find something that doesn't work well as this is actually one that does and i like this because again you have the multiple gears in there so you can talk more about gears you can talk about the ratio gears  again if you think about in a corner of this before the way clears work you can change the direction you can change the speed and the way you change a speed if you look at the gear you have maybe a gear with  n because gears have to be connected right and one team actually you know applies a force on the other and that moves it and so the movement of the gears that you're using trying to move these wheels so if i was to actually look at this whole thing of how fast the going to go or the speed of it i would check it actually do all that just looking at my gears and the number of teeth everything  i know that it's tin tif on the gear coming out the motor i want to slow it down some by slow it down i can put a forty two four here attached to it so that means that the gear that's coming out of the motor has to go around four times before this here in the middle goes around once so that slows it down and then also different type of gears like if i had a worm worm gear i could change direction but on this i actually don't need to change the records nothing you can always do with to some time if you're playing around you can always swap the wires but that little bit more than we want to do but i'm just telling you those are things you can do now so this is a great one person try we're going try now the great thing about this even though it is in chinese it has pictures and pictures are great now though there are some little writing setpoint into things you say what are they talking about but i figured out what your building so now one of the problems i see already and this is something that sometime happens with my kids or their this or i was worried that maybe they'd have but three wheels so there are so but panel which is attached to the motor right now so i actually think about it it's i don't remember how much this was i think the whole kit when i purchased it was maybe three dollars is not bad in out you know how the panel itself is designed and with the semiconductors and the wires that are in and how they heat up and how the material that they use is you know  two types of material so unlike the elements you have one that has more that trans in the other so you get your electrons flowing at the heat so you can talk about that and then you can actually push go to the gears and talk about the gears so you have the you have the three years here so it just depends on what you're doing what you want to focus on i think it's actually not a lot to go over a lot of stuff that you can do but again you have to  make some changes and where do it hopefully i didn't forget i have my little notes of things that i changed if not we will talk about it and i actually will make sure added to right i thought i had a note here but i think i have my head probably ok so we have three gears and we have these and these are actually just going to be spoiler space in between and we have war large screws and two small screws and another actually well i think it's just for the years that's what we have we're going to start building think you know kids should learn to use them and you know you always use that you know other righty tidy a lefty lucy when you're teaching them so they they may go right need they can tighten it up if they want to loosen it they call the symmetrical these two sides if you look at them this the color is a little off because there's something on this one but that's ok but they're symmetrical own in you know so that means they're they're like right as we're going to put the motor on the motor just requires you now this is what i had if i remember correctly there were some issues when i put the mold on and i have to be careful with that because you screw in the motor in these last parts here and you want to make sure it's in the right position because if not then it won't actually end up being flushed against this so the gear actually will end up touching the so i am actually had to do several of these if i got it right so so you have to make sure you do that and one of the things that they show you is they move see what i've done i kind of lined it up and this is what i was talking at you have to be careful here this is where you have to be careful careful with it because you want to make sure that this is you you don't want to have a down to four and you don't want to so i think it this is exactly the right spot and i can actually look at this one somewhat tell me if i'm right and they have something on but i don't see it so women do this so you put it on like this ok so then you use a little small sc was not tall enough because i looked at this one which is one of my working ones i had i guess a couple and they all didn't work the shaft hasn't come up but let's just do this we're going to move go forward in there and if we are problems we can go back with the make changes and as i tell my kids that's how you learn you don't make mistakes are you going to learn everything that you do everything perfect  we're working with kids and you have a lot of stuff again remember organization is always the key because with a lot of pieces a lot of things go missing so if you do decide to do something similar to this new one order a lot of these just order your extras so you have extra pieces because it doesn't always work the way you think and it's loose pieces then you have to find what though i tell him you know that if they lose but the screws in now and i want to make sure we look at and look at the picture because like this is inside they have motors on the outside so now we want to actually go and we're going to put the pinion gear on it and this is what i was telling i was having issues with because when i first the first one i built the here just to not go on right in the now with that i have it the gear c e o this gear is little bit too close so i have to move this up and this is what i think was the problem i was having before so let's say we're going to try and let's see what happens and one of the things you can do too is if you had this here you can always sure i like to have one that i built that i could test stuff so and then you have to put this on a sin and  and i said we're not going to finish it just this today but it pretty close maybe that i shouldn't promise you anything ok so that's where we are so far not bad right so you have  sell that have too much issues with it it's like to make sure it's not touch in the wall you know it's clear or so when it moves it doesn't have any friction and the friction would be if it's too close to the well it's not going to move even with even when you have the solar panel and only way you're tell something's going on the motor is you will hear something so if you hold it up to li and so what you're going to use is you are going to use this little axle and these grain these little green spacers and the thing about is just falls out and so the way they have to do it they they don't have you put these little pieces until the end and i actually put this on earlier than that so we're going to do that we're going to put this