All language subtitles for Building a Simple Component - How to build a Transistor_fulltime

based on we are now recording in the

goal of this episode is basically to

just build a simple component from start

to finish okay that's good that's

basically what we're going to do we're

going to build a simple transistor it's

a to entry 904 it's a part that already

exists in Eagles libraries so if you

want to check your work you can so

that's what we're going to go through

now being a first light you know we want

to start very simple very basic next

month we'll go into a more complex

device so for now I'm going to share my

screen let me know if you guys can't see

it okay

let me know if you guys can't see it

cool let's go ahead and get started

we're going to make a brand new library

for this part so we're going to go file

new library

okay as you can see this is how the

library opens up in Eagle seven point

five point three which is related beta

not recommended for commercial work for

commercial designs but basically it's

just a bug fix version so it really

isn't too much that can go wrong in this

one so you guys can see we have three

columns every library and Eagle consists

of these three types of items you have a

symbol which is a schematic

representation you have a package which

is the layout representation and then

you have the device which is a marriage

of the two okay so for every part that

you're going to use in your design you

are going to have to make or obtain one

of each of these at least okay since

devices can actually also have multiple

packages

what we're going to do now is we're

going to go ahead and visit the website

with our

baby she okay this is a data issue we're

going to be working off of so you can

see it's the fairchild data issue for

the 2n 3904 and we're going to be making

the tio 92 package okay that's the one

we're going to be making today very

simple package but it can help us see

the different aspects of drawing a

component a needle go to our library and

the first we're going to do is make the

package so let's click on I see one I'm

going to put in the name of the package

tio - 9 to stay ok it's going to say

create a new package we're going to say

yes ok and here we are

as you can see this is our work here and

here we can put in the description of

the package a simple description would

just be tio

92 and we might want to include the link

to the datasheet or something like that

but for now let's leave it at tio 92

okay as a general rule we recommend to

do an Engel is to go ahead and Center

the part okay

generally that tends to work best for

moving components around and referencing

referencing them so that's we're going

to try to stick with here okay if we

check our datasheet we're going to

notice that it's page 9

age now we're going to notice that all

the units are millimeters whereas our

drawing grid is in inches so let's go

ahead and change that I'm just going to

change it to metric because we're going

to see is that on this data sheet

this is the pin separation 1.27

millimeters if we go back to the library

we have one point two seven millimeters

okay in general the best or the

recommended grid unit spacing is

basically either the pin pitch or a half

of the pin pitch okay so for now we'll

leave it with the pin pitch we'll leave

it at one point two seven okay let's go

ahead and place in the connections now

because at EO 92 packages us through

whole package ok we're going to go ahead

and place through-hole pads now one

thing we're going to observe here is

that the width of these pins is between

0.36 and 0.56 ok in this case you always

want to design the hole to be able to

fit the largest variation so at the

thickest you may get a part that has

pads that are this pins that are this

thick point five six millimeters as a

general rule you don't want to have the

whole tight at point five six you want

to give a little bit of extra room a few

tenths of a millimeter don't really make

much of a difference it won't you know

create slippage or you know the part is

going to be able to stay in place you're

going to be able to solder it

successfully so

if you're not given a recommended

diameter for for the pad size for the

hole generally adding an extra 0.1

millimeter or even point two millimeters

is a safe thing to do so that's what

we're going to do we're going to go back

to the library and then click here on

the pad okay we can pick the different

types of shapes I'm going to stick with

circular I do tend to like circular pads

you'll notice that the drill value is

set to 0.8 millimeters which is 0.24

millimeters larger than the pin that we

saw maybe that's too big so I'm going to

go with 0.7 okay

diameter set to auto okay what does Auto

mean Auto basically allows Eagles design

rules to dictate the diameter the

finished diameter of the pad okay so the

drill value is immutable ego will never

tamper with that will never change it

but when the diameter however is more

negotiable if you set it to auto then

you're letting the DRC rest restring tab

dictate the final diameter if you

specify if you specify a specific a

specific diameter what you're going to

see is that when you put it into the

board if it complies with your restring

settings then it will be left alone it

will be exactly as you have it here in

the library however if the restring

settings win or a larger than what you

defined here in the library

the restring will win and you'll see

that on the board the pad will be larger

than what you define the library so

that's going to be a world just like if

you ever see it on your boards but it's

beyond the scope of our tutorial today

how we're going to deal with that so

just put you aware that if you ever

notice that your through-hole pads come

in larger than you define them in the

library it's almost always due to the

restring okay

so let's go ahead and place the three

pads so from what we saw in the data

issue we saw that we have a point of one

point two seven millimeter pad and we

have three of them so here's one here is

two

and here is three okay very very tight

okay that's the separation that we have

between them now that's fondling exactly

as it is in the data sheet basically

building exactly as it's shown here we

have a one point two seven millimeter

separation however if you guys have ever

noticed many times when you buy a

transistor you'll receive it something

like this in this type of separation so

you can plan for either one you can plan

for the 2.8 or for the one point two

seven I'm going to leave it at the one

point two seven I think that's pretty

good

if we feel that it's too tight as we can

see here because of the diameter and all

that we can actually just go even lower

on these we can do change

diameter I'm not going to do that I

don't want it to be that tight what we

can do is here for the diameter instead

of auto we just pick up something a

little bit larger let's see how it looks

with this one

nope too big cancel that that back to

Otto

another option we have that we could do

is we could choose to space them out

further than that and they are now but

this should be okay if we look at this

separation which we can measure by just

sending it to mils

let's put in something like five if we

look going to be too tight so actually

this isn't okay what I'm going to do is

I'm going to go with the other data

sheet here we're going to go with this

one okay as you can see it's just 2.8 as

a separation so that's what we're going

to do so let's go ahead and change this

grid back to millimeters whoops no

millimeters and let's set it to if the

largest separation before was 2.8 then

half of that would be 1 point 4 we could

do is zero point as to one point four

millimeters that's fine and we'll change

this to zero point seven

now which you can see is that this one

is on grid but the other two are off

okay the other two aren't in the proper

spacing so what we can do is we can just

specify this here the position they stay

at their old position it's going to

remove these and the easiest things to

do is just bring in a new one we'll

leave it up to point seven which your

determine for me four point seven here's

one point four here's two point eight

point eight okay now let's say there's a

situation where you have to place a pad

and it doesn't lie perfectly on grid

okay

that can happen that's a very common

thing you have a pad and it doesn't lie

perfectly on grid what do you do

okay what you can do is while you still

have the pad here floating in the

command line you can type in a specific

point so let's say that we want another

pad just for giggles just to illustrate

how this works let's say you want to

have another pad at two millimeters by

two millimeters okay obviously that's

not a point that's on grid okay what you

do is you open parenthesis you put in

the x-coordinate which in this case is

two then you put a space in eagle the

delimiters of space not a comma a space

then the y-coordinate so two two we

close the parentheses and we hit enter

and as you guys can see it's off grid

but it's located at exactly two by two

we can do another example negative one

let's say negative negative three okay

we can put multiple at a time if you

just put a space between them you can

enter multiple points at once

Oh negative two two

okay we've added two extra ones okay so

whenever you you have to place it

somewhere off-grid you can just go ahead

and type in the points yourself

and so we do that

perfect it you'll notice that ego gives

these names by default Eagle won't show

the pad names if you want to view them

you can go options set miscellaneous and

you select display pad names okay you

basically check that off

okay so other thing we want to do now is

I'm going to actually change the names

of these pads to match what's on the

datasheet okay so actually before we do

that let's go ahead and draw the rest of

the shape so what we're going to do now

is going to check our data sheet here we

have the physical outline of the part

and sometimes it can be useful to have

it so let's go ahead and try to get it

in okay and the way we're going to do

this is roughly we're just going to draw

a semicircle okay which is two which is

two point six six millimeter radius

let's go with that two point six six

just to get a feel for how it looks as

you can see we're not given a lot of

information here

and we do have a 5.2 overall here

diameter overall length back here at the

longest point

which if we divide that by two would

give us a radius of 2.6 which is kind of

here

which is kind of within range tool will

use 2.6 in this case

to get a good radius because that's the

widest point here that's what's being

measured here in the datasheet there's

any questions at any point in this

particular frita there is a post a chat

or ask a question okay so at this point

at this point is the same as this point

this point will go with that

two point six let's go back to Eagle

okay so we can use the art command okay

now the our command is several options

we can do clockwise put flat caps all

that stuff the width of this we're going

to set it to this is on the tea place

layer so for one system will be okay

this will be a five mill which is

typical for a silkscreen line okay

this case we have to give three points

and the our command is always a little

tricky because it doesn't behave the way

you kind of expect it to you can see

here so what we're going to do is we're

going to enter points on it okay so

we're going to put points on the arc two

points first

first one is 2.6 in the X dimension zero

hit enter okay you can see that's where

it's focal point the other point we're

going to put it at is two points

negative two point six zero

here

as you can see we can continue to extend

it if we want to what we're going to do

now is we just pick negative two point

six zero again

and that gives you a perfectly closed

arc if we look at its information here

we see its length we see that covers 180

degrees and it's a four arc okay perfect

we look at its radius we get two point

six millimeters which is the radius we

calculated before so basically the way

arc works instead of you specifying the

center and then the radius and then what

angle to run through you basically have

to define points on the arc okay

which is what we've done here

okay if you want to find out more

information about how exactly that works

you can go into the help command

actually easier still help arc okay and

it'll bring up

it will bring up the documentation page

for the health command

let's go back and let's get the

remaining stuff that we need from the

datasheet in datasheet we see the

overall height here is four point one

nine we don't know what this angle is so

we may not want to estimate it again a

silkscreen so it may just be enough to

have straight lines here as you can see

when you're not given information don't

let it stop you

the critical point will always be

dimension property really the most

critical thing about this package is the

location of these three pins and that

they be named properly okay that's

really it this little angle here this

little taper if you're not giving any

measurement for it or you can't find it

don't worry about it just square it off

or look at if you really really have to

have it exact to see if another

manufacturer has a more precise

datasheet or if not you may have to

contact in this case fairchild directly

to get them to give you that information

okay so here we have two point six

millimeters and here we have four point

one nine is the overall height right so

what does that give us well the

difference between let's say two point

six and four point two here's again

point you know 1/100 of a millimeter not

that big a difference

that's going to be to be one point six

right one point six millimeters

well what we do now is using the line

command again we're off grid now so we

can enter points okay so we have two

point six zero basically I'm starting

over here I'm going to go up one point

six millimeters and then we go to point

six one point six

now we go to the right we will have

negative two point six one point six and

I'm going to go down this point down

negative two point six zero

and perfect

and that basically is going to give us

what we want

yes the basic shape if we like I said if

we want to taper it we can kind of gut

feel it and move it around but as such I

think this is okay so the only other

thing we might want to do just looking

at at the way it's represented we could

obviously go fine so we could draw a

line here to kind of separate them we

could do that but if we're going to do

that I would put it on the info okay

maybe not on this ocean you don't really

need that Center on a silkscreen we get

all so for example cut out these pieces

that way the pads stay open completely

you know no silkscreen in the model in

this case it's not really going to be a

problem but just for the sake of a basic

part we leave this as is okay the only

other thing we need to add here is the

name and value placeholders so we go

text we put greater than sign name

one from the tea names there

and we can locate that wherever we see

fit I'm going to put this here okay and

we're going to put in greater than sign

value notice how I'm changing the layer

that they're on okay name was on T names

value is going to be on T values okay

very important to have them on separate

layers otherwise you lose the ability to

for example eliminate the values from

the silkscreen on the finish board okay

so it's very important that you always

include these on their correct

respective layers the other thing you

want to do is name these to match the

datasheet so we go to datasheet and we

see one two three okay so let's go ahead

and do that

we do though with the name command

one two three okay any questions on this

any questions on this so far anybody

okay cool so now let's move on to the

next part which is arguably much easier

than this part and that's the symbol the

run on our symbol when I say - and 3904

hit enter create new symbol we say yes

okay now in the symbol you're going to

notice that the grid is set to zero

point one inch we do not want to deviate

from that zero point one inch we can

change it to metric through whatever

other measurement system we want but

that spacing has to be point one inches

the reason for that is that all of the

other parts of needles libraries are

made to that grid so if you deviate from

the grid you're going to have trouble

getting things to connect to it remember

that the symbol is just a schematic

representation it doesn't have to be at

precisely measured it just visually has

to communicate the point of what this

part is okay so that's something that's

very very key and we want to always keep

in mind so let's go ahead and draw a

simple transistor and again I'm going to

keep it simple you can get very fancy

with the CAD work there are already

transistor symbols in Eagles library

they're going to be much prettier than

what I'm going to draw now but the goal

is just to give you an idea of how you

would do this starting from scratch once

you understand the fundamentals then you

can work using you know faster methods

more precise or you can reuse you can

use your piece to draw symbols for you

but for now it's good to learn the

manual way okay so the first thing I'm

going to do is using the line command

we're on the symbols there okay I'm

going to go ahead and draw this here

we're going to draw this here okay

again we're making an NPN transistor so

now if you guys notice whenever we set

the grid we do have an alternate grid

okay you invoke the alternate grid by

holding down the Alt key which is what I

was going to do right now okay so I'm

going to zoom in when I hold down alt

and I'm just going to change it to or

five I don't need it to be that fine

okay so I hold down alt now what that

allows me to do is if I don't hold down

alt I can only click at grid spaces okay

but if I hold down alt and then click in

the middle

it allows me to get that

pretty simple

now something we have to keep in mind if

we notice the way I place this this part

it isn't quite going to be symmetrical

around the grid it's embedded does have

symmetry but it's not around the grid

and that can come back to bite us later

so what I'm going to do is I'm going to

move this and bring it up just so that I

have one grid unit on either side of

this origin you'll see why in a second

and I've proved these two segments I'm

hitting the Move command going to click

here I'm going to try to move that there

and there we are

okay now the reason I did that is

because when you design a symbol most of

the artwork in fact all of the artwork

it doesn't matter if it's on green or

not but the connection points do have to

be on grid there's no if ands or buts

about it

so our pinpoints which are brought in

using the pin command basically only we

always have to make sure that they end

up on grid so this one ends up on grid

this one's going to end up on grid and

this was going to end up on grid okay

okay so we did that now this might be a

little long for our taste you can change

the look at the properties of a pin

we're going to see there's lots of

properties I set the length too short if

they apply and notice it shrinks okay

you'll also notice that you can specify

a function for it this comes in handy on

digital circuits not in the case of

transistors we can ignore that visible

is going to be important in a second but

I'm not going to talk about it just now

then we have direction we can set the

direction to be either an input only an

output only a power pin a high impedance

supply pin so on and so forth okay this

helps the ERC make certain checks

whether you you know make sure you don't

have an output connected to another

output you know could be dangerous

things like that when in doubt if you

don't want to deal with with those

checks or if you're worried about

getting superficial errors or or

extraneous errors the safest thing to do

is to leave it at an i/o okay which is

what we're going to do now

swap level basically allows you to

specify if different pins can be swapped

one for the other okay if you have a

swap level of zero it means it's not

swappable if you have a value higher

than zero than any other pins that have

the same number are considered

interchangeable okay that's not the case

here with this transistors we're not

going to worry about it okay okay we

also can do these changes using the

change command we can set or is it soft

level spacing

Thanks sure here we go they said that

the short we click here we click here we

got them short ok

pretty simple the only other thing I

need to draw here to have a basic

transistor symbol is I click here hold

down all to get that

all anywhere okay it's a very simple NPN

transistor symbol okay like I said it's

not the prettiest you'll ever see but

it's a basic symbol and it is functional

ego comes with others you're going to

notice that they're much prettier than

this one but for our purposes this is

going to be enough now again we have the

issue of naming these spins so let's go

ahead and do that we use a name command

this will be B for base this will be C

for collector and this will be e for

emitter and that's a little better you

know they're obviously not running all

over each other but the simple itself is

pretty descriptive we don't really need

to be able to see these are these

designators so again we can go visible

remember a parameter from the info

command and we can say whether we want

to just see the pad we want to see just

the pen we want to see both or neither

for a transistor it's probably helpful

to do to see the pad so we're going to

change the visibility's disk pad okay

and that's going to help us later

confirm what's connected to what so the

symbol is almost completed let's go

ahead and bring in again our our name

and value text to greater than sign name

okay we could make sure it's on the

names there put that there

we do greater than sign value and we

make sure that it's on the values line

okay now you guys may be thinking that

gets very tedious especially if you're

making a lot of parts ego already comes

with a ULP design to kind of speed that

part up to automate this is it's a very

menial and common task which you can do

is you click on the UOP icon and in the

set that comes with ego there's one

called set name and value which is this

right here if you just double click it

it'll automatically put them in for you

and it will put them in at the correct

size and on the correct layer okay so

you don't really have to worry about it

names this is value very simple any

questions on this

okay so now let's go to the final step

we have our package we have our symbol

and at any point in time we can review

them just by going to this icon which is

the table of contents and you can see

our package or symbol we're going to do

now is make the device on device we can

give it the same name 2n 904 say yes

okay this is the device dialog you can

see looks different than the others

again we can put description and p.m.

and sister

and 3904 keep in mind that you can use

HTML tags so for example use a break to

put any line beta equals on and off 200

okay

and IMAX

what was 100 millimetres 100 milliamps

about that something else we can do over

here is I'm going to go ahead and make

this top part bold

and you can put in whatever you want

like I said it does support HTML tags so

you can put links you can put images in

here so you can really have a lot of

documentation but again for our purposes

this is more than sufficient the first

thing we do is going to add in our

transistor symbol and see there it is

say okay again try to Center it there it

is nice and centered you'll notice that

it gets a G dollar sign one g dollar

someone basically if the if you were to

have additional transistors in the same

package they would each be named

differently to indicate a different a

different value a a different gate but

because this is a single transistor

component this is enough you don't

assign one is fine just something to

worry about there next thing we're going

to do is add in a new package we click

new we select RT o 92 package that we

may we say ok there it is perfect want

to set up our prefix if you do not

define the prefix ego we'll assume you

dollar sign okay for transistor we

usually use Q or T

usually it's cute because she is taken

in by a transformer so we'll go with Q

let's say a value on over here so let me

explain what the value off and honest if

you set value to on then basically in

the schematic when you use this part its

value is adjustable if you set it to off

then its value is going to be whatever

the device name is so in this case the

best thing to do is to just leave the

value to off that way it will become the

transistors part number obviously this

was a capacitor a resistor then it would

make more sense to set the value to on

final thing we're going to do is connect

whenever you have a package and it

hasn't been connected you'll get this

this is this a little warning sign here

click connect as you can see now we have

three columns we have a pin column we

have a pad column and then we have the

connection columns and what we end up

doing is we end up just picking for

example base if we go back to the

datasheet we find that the base is

actually pin 2

it's a center pin so we select 2 we say

connect okay then one which is this one

right here is the collector and again we

can see all this by going back to the

datasheet

get all right there see in 1 & 2 pin

during those you'll have to mentally

reorient the the drawing to be able to

to know which one is which okay so we go

back over here and one is the collector

and pin 3 is the emitter

once you have emptied out the pins

column you're done notice how I said

once you empty out the pins column you

can have extra pads Eagles okay with

that what you can have is less pads and

pins so we say okay all right and that's

basically it so what we're going to do

now as you can see this allows us to

verify when we use the part we can make

sure everything is okay once you start

gaining some confidence even this you

might find this too much and you can

turn those off by using the visual

property in the symbol so right now

we're going to go in and do a file save

on our library save it to the desktop

for okay get safe and that's it we've

made our first component so if we want

to use it very simply just go file new

schematic you go library use you browse

to where the library is saved from Mike

is here on the desktop I'll pick F F or

you double-click it and all you have to

do now is when you go to the add command

you'll find it here

sf4 and we can go ahead and bring it in

many as we want

so as you can see building a component

on your own really isn't that difficult

especially in a simple case like this

one even when we go into more

sophisticated types of components the

process isn't much more complicated you

just simply are doing more of the same

type of operation if I switch to a board

now and you'll see that we have all all

of our packages the same ones we created

in the library ok and remember how I

told you by setting the value to off it

would automatically take the device name

you guys this is basically it for first

flights episode 4 let me go ahead and

stop sharing let's go ahead and answer

questions

let me see can you modify this in parts

to make new ones yes you can you can

definitely copy arm from Eagles existing

libraries into your personal libraries

and modify existing parts which is how

in the general case which you will be

doing is basically reusing what's

already there and I'll show you a quick

example of how to do that right now so

let me go ahead and share my screen

again

okay so I should still have that library

open and I don't that was my mistake

okay let's go ahead and ensure that we

go file open library go to desktop and

we have ff4 okay here's my library right

now let's say I want to copy to it I

want to copy the existing symbol or

package to it what we do is easiest way

to do it is you go to the you control

panel let me expand the library stream

find the part you wish to copy so in my

case I'm going to go to the transistor

NPN library

this ado this example over here and we

have the device you see a much better

symbol and what I made we can also see

on another package for the teo 92 that's

possible okay let's say I only want the

symbol what you can do then is if you

scroll down you'll see that the symbols

are listening to their own tree we get

NPN dot C and P n SC Darlington on a

driver let's just a normal one okay what

we do is because we have a library open

okay and this is key

whatever library you want to copy into

it has to be open it doesn't have to be

up on screen but it does have to be open

okay we go over here we right-click and

we say copy to library when you do that

you'll see that it came in okay and

there it is

much nicer right

right here better drawn the other thing

you notice is whoever did this part

basically make sure that nothing was

swappable by assigning everything a

different number okay this is probably a

throwback from one of the early releases

of Eagle where the zero wasn't supported

initially

okay so then what we do is we can go

back to our table of contents um we see

and p.m. and you can do that for

anything for a symbol a package if you

do it for a device you'll get everything

associated with that device if I 6 2 and

through 904 I right-click on that and I

say copy the library you're going to see

that NPN even though I'm pans already

there and see only two would come with

it

let's say something like this right I

right-click on it and actually copy the

library going to see if they both come

if we go to table contents view as

Dartington is the tio 92 package that

this part using then there's that device

you see it's very easy to copy from

equals existing libraries you just open

up whatever library want to copy in to

go to the control panel find what you

want to copy right click and hit copy

the library

any other questions guys

you

if there are no other questions that's

everything for today thank you very much

guys for joining me on this first flight

as you can see it was a holdup got any

question

okay so we do have some more questions

let's go ahead and go through those

so one question how to download parts

from the New York website okay from the

New York website basically you do have

to have a login at element14.com okay so

I'm going to go and share my screen

again

over here

what you're going to do is you're going

to go to resources add saw fuel design

go over here to CAD libraries for

example you have to be logged in order

for this to work okay so you go ahead

and find a library that you want to

download say the Fairchild one you click

there so take you to this page left

click on the download Eagle library

you're going to unzip it and then you'll

have it available to you

okay you'll basically have an OB our

fault you can use

in some cases it may not be an LBO you

may get an SCR but it will have full

instructions on how to import it into

Eagle

and let me see what other questions we

had

I have to design a PCB with a 100 M

power MOSFET to-220 but the pads seem

always to near okay if the pads seem too

near okay

then remember how I mentioned the

restring issue it could be the case that

restring is inflating your pad so that

are larger than you originally drew them

in the board if that's not the case then

what you could do is you may just have

to create a little extra space or pick a

different package the to-220 package is

a little bit it's kind of pushing it for

a hundred amps you may want to try

finding a t oh I think it's a 202 or

something like that which is a bit

bulkier and has greater separation

between the pads so that may be an

option um but if not if the pads seem

way too near and what you can do is just

make separate the pads a little bit but

be aware that you'll have to open up the

pins a bit as well and you can kind of

make it work that way on a one-off

prototype that will work on a

manufacturing product that needs to be

manufactured then you may just want to

reconsider the package if you feel

concerns the pads are too near to each

other okay

so can we use a BMP picture to make a

component you can like for the

silkscreen for example you can import a

bitmap for the silkscreen

but it won't create the connectivity it

won't create the copper and that stuff

those things you do have to create with

the pad command or you know or with the

pins depending on where you're importing

the bitmap into so you can use it you

can use a bitmap for that but like I

said really is for the silkscreen you

wouldn't want to use it for anything

else okay I only added a description to

the package is there any value in adding

a description to the similar device

there is the device because when you're

searching for the part the description

that shows up as a devices description I

only added it to the package just for

the sake of brevity but yeah in general

cases when making your own the best

places or the ones where makes the most

sense in the device and in the package

more the device in than the other ones

because the devices of the description

you'll see when you're in the add

command searching for a part that's the

description you'll see there but even

for the package or the symbol it is

useful to add descriptions if you

basically follow some sort of guide or

standard like a datasheet or something

to make that part basically it's a way

to verify that you've made the part

correctly somebody else can look up that

datasheet and make sure it was made

properly so there is value and adding to

it

hey is must have yeah yeah you'd of the

bitmap usually can help to have a nicer

look but again if you do the drawing

well also you don't necessarily need a

bitmap but you can use the bitmap it can

make life easier

any other questions and make sure I'm

not missing anything okay if your group

lines in a symbol is any way to specify

a new location what is the origin of a

group this is a good question

let's go ahead and check that out okay

so let's go to the schematic that I make

that this will be a good enough

illustration okay the group always

behaves the same way okay as far as

picking its origin and stuff like that

so let's say we have a group okay these

two transistors I have the Move command

I want to move in obviously if I hold

down control and right-click here the

nearest grid point becomes my origin if

I click here this becomes my origin if I

click here so as you can see the origin

becomes wherever you control right click

okay

control right click over here that

becomes my origin so if you're observant

you're going to see that wherever I

control right-click to perform the

operation on the group that becomes my

reference point or my origin for that

group if I want to specify a specific

point okay then what you would do is you

would open a parenthesis let me see what

point I want to use so say is this input

one to point to the open a parenthesis

you put a greater than sign space the X

the x coordinate one point one then a

space y coordinate to point to go

Sabrina's and hit enter and you'll see

that that's where reference that's where

it grabs the group okay so you can

specify the origin of the group by doing

open parentheses greater than sign than

a space X and y coordinate of that point

okay

that's how you do that and then now

because you know the origin you can also

specify an invocation just by entering

it x-coordinate let's say - y coordinate

- as well

okay so hopefully that answers a

question is there anything else

being else anything I missed

hey if not this has been first flights

episode four thank you guys for taking

the cut at the time to come to this

webinar do you guys have any further

questions on this feel free to send me

an email support at cadSoft usa.com this

will be this recording will be posted I

will post a link on the webinar page and

I will try to also convert this to

YouTube it's a way you guys have that as

an alternative as well okay so thank you

very much everyone and have a great day