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how to make a homemade solar panel this is the first in three videos of a solar

DIY project everything you should know to build a 100 watt solar panel at home

in order to charge a 12-volt battery with solar energy a solar panel with 18

volts is required so to build a solar panel capable of charging a 12-volt

battery you will need 2 millimeters of tabbing wire and another of 5

millimeters solder wire is a must have a flux pen strapping tape also known as

short tape regular tape a solder arm between 60 and 80 watts and multimeter

one that conveyor of both voltage and current silicon paste preferably

crystalline with UV protection epoxy resin the best and easie way to do it

yourself to encapsulate the back of a solar panel this epoxy resins have

excellent adhesion to glass and acrylic plastic and ethoxy hardener here the

measure is two to one ratio and of course last but not least the solar

cells here is up to you you can purchase preet absolu cells they have tabbing

wire already attached it will cost a bit more but will saves you a lot of time

and work in video description below you find links to everything you need to

start building your solar panel let's get started the first set we have to

take is to measure the length of the tabbing wire between two cells grab two

cells and join them close to each other like this two or three millimeters

between them is enough with one cell face up is the negative side and face

down is the positive side measure the length of the tab wire along both cells

the job here now is to measure and cut the tabbing wire for all 36 cells for

your solar panel to make this task less tedious cut the

tabbing wire to one row of nine cells at a time and after that you can start cell

during the tabbing wire on the negative side of each cell to do this

first pass along each conduct line the flux pen this will prevent beading of

the solder Arum and also helps the cell to flow cleanly position the tab wire on

the cell and start soldiering from top to bottom in a continuous movement

soldiering is not so hard you get it right very fast but get prepared for a

couple hours of work so this type of 6x6 polycrystalline cells usually has three

connecting bus lines we have to weld 36 cells on the negative side first where

next it must be welded on the positive side that is the back of each cell

creating a string of 18 volts the needed current to charge a 12 volt battery one

of the best and strongest materials to use in a solar panel is tempered glass

three millimeters are more than enough for strength and durability being also

the ideal surface to start cell during your solar cells start by giving a good

cleaning

now with a clean surface we can start put things together but first let's

again see how a solar panel works the first cell in this row is the negative

side of the solar panel that will be welded to the negative bass wire

becaming this way the negative pole of the solar panel and continuing with the

next three strings of cells all welded together from front to back of each

other making this way a total of 36 cells of 18 volts

another thing to note is that solar cells are very fragile for this reason

and almost guarantee you will break one or more cells even if it is a very small

crack you can use regular tape and repair it easily now that you know how a

solar panel works it's time to connect all cells together to make this task

much easier here are some tips you can use to do this correctly

it is convenient to use a type off tweezers or even a way to hold the wire

in the correct place to weld Here I am using a scissor which works very well

another useful tip is to use normal tape to hold the cells in place in this way

they remain aligned helping you to weld more easily and quickly and if the

tabing wire is a bit long simply cut off the loose ends when you finish the job

now with all cells tab together it's time to clean again the glass surface

now with the glass clean it's time to position and secure the cells in place

by measuring the string of cells closest to the edge of the glass we find the

margin on all sides of the panel then with all cells in place we need to keep

each string of cells tightly attached to the glass first with normal tape and

next with short tape

now pass the short eight from top to bottom between each string of cells and

at the same time it is convenient to double check for any broken cells even

if there is a slight crack the cause affair is the encapsulation will pass

through it and the epoxy resin will eventually yellow over time

now with all cells secure in place let's proceed by cell during the string of

cells into the bus wire start by cutting a five millimeter wide tabbing wire to

the width size of the two middle cell strings and secure the bus wire with

regular tape

cut the loose ends of the cell tabbing wire and you're ready to solder the two

middle rows together here I will weld the tab wire from the positive side of

the cell to the bass wire which will then weld to the negative side of next

string of cells eASIC as you will see right away now is to do the same for the

other two row of cells on the top of the panel and then it ends with this two bus

wires which show the positive and the negative poles

and after this with a string of 36 cells connected to the positive and negative

bass wire we have to test if we have a promising solar panel with the panel

facing the Sun measure the voltage with a multimeter and make sure that it

produces at least more than 18 volts here I tested on a spring morning keep

in mind that solar panels always lose tension in the hottest hours depending

your region you should get about 18 point six volts during the peak Sun

hours now back to the office we going to proceed by soldering two copper wires to

the poles of the panel here you can choose to use the 5 millimeter bass wire

2 also to be connected to the junction box in the bottom middle of the panel

did I choose a pair of copper wires does the same job and I am not using a bypass

diode because I will use a PWM charge controller which protects the solar

panel and the battery from reverse current and overcharging respectfully

among other useful features watch the next video where we continue with this

extraordinaire solar panel see you there

you

For more infomation >> DIY Solar Panel - How to Build Homemade Solar Panels from Scratch - Part 1 of 3 - Duration: 10:36.

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DIY Solar Panel - How to Build Homemade Solar Panels from Scratch - Part 2 of 3 - Duration: 10:02.

As we left the previous video on how to build a 100 watt solar panel now we're

going to continue by preparing the solar panel for the encapsulation the first

step we need to do is by placing the silicon on the edges of the glass

this will prevents the resin from spreading out of the panel

epoxy resin is one of the best ways to keep solar cells from a home made solar

panel away from moisture for a panel of this size you will need about 40 ounces

about three pounds or one kilogram is enough it's not cheap but it is the best

choice over the eva film to encapsulate a solar panel made at home to know where

to get this type of clear epoxy resin follow the links in video description

below and of course epoxy hardener here the blend should be two times the epoxy

resin for one hardener

and mix these two compounds in a plastic container and mix it slowly mainly to

avoid getting air into the mixture

after about two minutes mixing the resin with the hardener mix it again in

another container to obtain a faster and stronger curing finish this second

mixture must be made to obtain a perfect and well cured resin

now what we have to do is to pour the mixture on the back of the panel to do

this simply pour the EPOC see resin from top to bottom in a constant movement

and after 12 hours you will have an encapsulated solar panel

now is time to make the panel frame get three l-shaped aluminum profiles two

meters long and at least three millimeters thick you can also go with

wood it all depends on your budget and how much you want to spend with your

panel this part can be done at the beginning knowing the size of the glass

the panel frame can be made and then with the glass attached on the panel

frame with silicone proceed with the welding of the cells and the bass wires

until finally the encapsulation is made but always put the silicone in the edges

of the glass before doing the encapsulation now I'll leave you with

the images on how to make the frame for your panel measuring the length of each

side of the glass mark each profile with a marker leave at least two millimeters

of cutting edge

next to cut the profiles you can use a cutter holder with a 90 degrees angle

but it is best to use a miter saw

an angular ruler can also be used to check the cutting angle it is also

useful to keep the profiles in place during assembly

and the best thing to attach the glass and frame together as to use stainless

steel brackets and screws for this panel I use 12 brackets 8 to support the glass

and 4 to join the profiles position the brackets in place mark and drill the

holes and now join each frame together

as I mentioned earlier we can make the frame before starting putting things

together we can make the frame and attach the glass with silicone then

start soldiering the solar cells the bus wire and in the end with the

encapsulation so add the silicon to the inner base of each profile then attach

the glass to the frame next put the brackets in place add the junction box

and then the 100 watt solar panel it's finally concluded so now we assemble a

frame and the encapsulated panel together

and now we put the brackets in place but if you decided to add a back sheet like

this one on the back of your panel do it before making the holes of the frame and

then proceed by putting the brackets in place Here I am NOT using the back sheet

and the reason is for you to see how the back of a solar panel looks like

and now glue the junction box with the same silicon paste make a hole to pass

the pole wires and you have a solar panel in your hands and now watch this

next part to see the voltage and amperage test

thanks for watching and I'll see you there

For more infomation >> DIY Solar Panel - How to Build Homemade Solar Panels from Scratch - Part 2 of 3 - Duration: 10:02.

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How to build a Lego Robot suit/Mech V2 (Special!) - Duration: 19:44.

hello everyone, I'm JP, and in this video, I'm going to be showing you how to build

this robot suit! So to build this robot suit we're going to start by building the

legs, and then the arms, then the main body, and we'll put everything together.

So to start with the legs we're gonna take three 1X8 Technic pieces and you're

going to take a 1X3 Technic pin and put it right here, and then we can take

our second 1X8 Technic piece and put it here like that, and our last piece,

right here. so this is the main function of the leg and now we'll add some extra

parts to give it-to make it look better and help the robot suit to stand so you

can start by taking this 1X6 flat piece and putting it right here, and this

will stop the leg from bending the wrong way and you'll see how it works in just

a second. we're going to take a 3X3 flat plate

and put it right here like that and then a 2X2 - uh - 2X3 plate, and we're gonna

put it right here so now you can see how this piece stops the leg from bending

the wrong way, and now we're gonna take a 1X2

um, slope brick, and we're going to put it right in the middle of the 3X3 plate...

like this. Now we're gonna take two 1X2 sloped

grille pieces and put them on either side of this 1x2 sloped brick just

like this. Now that's it for the front part, and now we'll turn it around.

And for the back we're gonna make a little rocket booster which is just a 1X1

brick with a stud on the side and a transparent 1X1 piece like that

and it doesn't have to be a cylinder it can be a... um... a brick too. So we're gonna put it

right there... just like that. Now we're gonna take two um 2X3 plates and put

it here and here but before we place this one, we're gonna take a 1X2 brick

and we're gonna put it right there, then we're gonna put this piece here.

So after that we're going to put a 1 by- a 2x2 upside-down slope brick right here,

next we're gonna take a 1X2 the sloped upside down brick and we're gonna play

right here and here we're going to put this another 1X1 transparent brick

here for another booster and there were gonna take this this piece here I'm not

it's not really sure what it's called so we're gonna put it right here and

next we're gonna take this piece and we're gonna play here but before we do

that me up on my piece and that's this one way to upside down slopes brick I'm

gonna put it right here then we're gonna take our 1X3 upside down slope brick

just gonna go right here. So you may wonder what this is for and that's just

to put this um, 3X3 rounded piece right here I think it just adds a little

bit extra to the look, of course you could always customize it and change it

around with your own pieces. So the last thing we're gonna do is we're gonna take

this um axle piece I think it is, I don't know

what it's called though we're gonna put it right here and that is the right leg

right there and here is the left and right leg together so it's exactly the

same you just mirror the, um, the build for each leg and that's the left and

right leg. So now we'll start building the arms, and to start, you're gonna take

a 1X6, um, flat piece and we're gonna put a 1X4

I'm gonna piece with studs on the sides right here

and next we're gonna take a 1 by 1 brick and put it here and a 1 by 1 piece I

won't be one break with this stud on the side right yeah this so that's where

we're gonna put our hand piece right here now if you don't have this piece

you could always um switch it around with some other pieces you have and so

next we're gonna put this piece here and we're gonna take another 1 by 1 flat

piece and put it right here so after that we're gonna take a 1 by 4 flat

piece and put here next we're gonna take a my 1 by 2 piece with this piece this

part here at all I'm not sure what this piece is come here but we're gonna put

it right here and then we're gonna take a 1 by 3 flat tile piece and put it

right there and that's um so this is both of ours as you can see I've just

married the arms really simple and so now we're going to start building the

upper section of the arm so for the upper section of the armor can I start

by taking another 1 by 6 um plant plate and we're gonna take

another 1 by 4 brick with dust on the sides and put it like this then we're

gonna take the 1 by 2 brick with 2 technicals and we're gonna add um this

piece here um yeah we're gonna add this Technic pin right here next we're gonna

take this technical piece I have no idea what this one is called either but it's

gonna go right here and then another one of these king or axel pieces it's gonna

go right in there so next we're gonna take this one by one by three I'm wing

piece and we're gonna put it here like this they're gonna take a one by three

piece and put it right here and this one by two

I'm piece with a grip I think is code you're gonna pretty here

like this now to finish up we're just going to take a 1 by 2 sloped piece and

it's gonna go here and we're gonna take the grill piece I'm going here so that's

almost complete you just have a few more pieces to add on to make it look nicer

I'm just gonna take this 1 by 4 flat piece and put it right there and then

we're gonna take a 1 by 2 sorry 2 by 2 piece and put it here and then a 1 by 2

flat piece and where they I'll put it on that T by 2 piece of this now for the

final piece we're gonna take a 1 by 1 transparent stud and it's gonna go right

here for added effect so now we're gonna connect the arms to each other this

that's um so now we'll build the main body and so we're gonna build in two

parts we're gonna build um this section here where the minifigure will insert

and then we will build this section which is the shoulders and the jetpack

so you can start by taking a 2 by 8 plate and we're gonna put a 1 by 2 brick

with two technic holes in it in like this and then we're gonna take two

Technic pins and put them here and here

next we're gonna take two of these pieces we're gonna put them in like this

just like this so this is where we are gonna attach the legs so after we do

that we're gonna take two 1 by 2 bricks with two studs on the side we're gonna

put them here in here next we're gonna take a 1 by 2 brick and place it right

in and after that we're gonna take a 1 by 2 plate we're gonna put it right here

then we're gonna take two 1 by 2 bricks I'm sorry 1 by 1 bricks with a stud on

the side and it has to be this kind of brick because that way the minifigure

will sit more securely in place so we're gonna put it right here and right here

then we're gonna take another 1 by 2 plate and we're gonna put it right there

so after that we're gonna take a 2 by 2 tile piece flat piece and we're gonna

put it right there then another 1 by 2 tile piece right there or you could just

put a 1 by 3 2 by 3 um flat piece right there so after that

we're gonna take a 2 by 4 plate and we're gonna put it just like this

and next we're gonna take em one by two plates like this and with this part here

we're gonna put it right here we're gonna repeat for the side like this next

we're gonna take two 1 by 2 plates or of a 2 by 2 flat plate

then we're gonna take two I'm 1 by 3 plates but we're not gonna put them yet

I forgot we need this piece a 1 by 4 2 by 4 plate

I'm gonna put it right there then we're gonna take our I'm 1 by 3 flat plates or

by 1 by 2 2 by 3 flat plate and we're gonna put it there and then we're gonna

put this piece here just like that

so first we're gonna take a 2 by 12 plate and we're gonna take two 1 by 4

tile pieces and Micah don't put them here right here 4 steps from the sides

I'm two studs in between and I can leave that for a minute

we're gonna take a 2 by 2 tile and um are there two 1 by 2 piece I'm 1 by 2

plates or that 1 by 4 plate we're gonna put it at the back just like that

next we're gonna take our um 6 by 3 wing piece then put it right there we're

gonna take our 1 by 2 sloped piece and put it here now we'll turn this around

and we'll put our two jet turbines or rocket boosters or whatever you want to

call them we're gonna put them right here

and we're gonna touch this part the other part that we just built we're

gonna put it right here just imagine so now I'll show you how to build the

shoulder so for the back part of our shoulder we're gonna take em one two by

D um plates and we're gonna put a 1 by 2 brick right here next we're gonna take

two upside down slope bricks 1 by 2 sloped bricks or a 2 by 2 sloped brick

we're gonna put them right here after that we're gonna take em this piece here

I'm gonna play here

and after that we're going take two 1 by 2 plates put them together I'm gonna put

them on this black piece here like that then we're gonna take another one by

time to light the plate I'm gonna play here they're gonna take a 1 by 2 tile

we're gonna put it right there now for the last piece we're gonna take a 1 by 2

1 by 2 sloped brick we're gonna put it right here just like this now I just

realized that I not made a mistake when I was showing you how to build this

section when I said that these pieces go here

I was actually wrong they don't stay go here so if you have built this and you

are trying to fit it together that is the reason why it is not working

properly so I apologize for that and so for the other shoulder this is how it is

actually this piece yeah I mean it was another mistake so it's gonna be like

this and now we're just gonna put them on the back of our main body just here

like this just say this so now we'll build a vampire

so the front part of the shoulder is really simple all we're doing is we're

gonna take a 1 by 2 tile and we're gonna put a 1 by 2 brick with one technical

and another one way to break with no technical just a regular brick and we're

gonna take this piece here we're gonna put on top and that's really it so now

we'll put this on

all right build on and as you can see these line up so the reason I meet is

like this was to put two two by four um Titus on both sides to make it strong

because when I first built this when I put in the arms they were too heavy and

these pieces would always detach so I built it like this to make it strong and

it helps it really works so something's missing here and I'll show you how to

build that now well this next part is simple too we're just gonna take a 2 by

2 tile piece and we're gonna put two of these 1 by 2 m tall pieces just like

this next we're gonna take a 1 by 2 P hinge piece and we're gonna put it here

after that we're gonna take the clip the the other piece that attaches to that

we're gonna put it here and we're gonna finish up by taking this piece and we're

gonna put it here so now we're gonna take the pieces that we just built and

we're gonna put our whole wheel part together so the piece is going like this

and now putting the legs yes the nars

now gives us a pilot there it is so I'm really happy with the way it turned out

and it has a lot of motion and really good articulation overall I especially

like the way that this cockpit turned out it's the best one I've built so far

and that's it so hope you guys enjoyed this video give it a like if you think

the video is good enough and share it with anybody who you think might like

the video and also consider subscribing really helps out the channel and I'll

see you in the next video