Question on schematic symbol
awhite , 10-15-2019, 11:55 PM
My first venture into building a simple pcb using Altium. I am just making a schematic symbol for an led. The led is a plain superflux red diode. My question is when making the symbols what is good practice? I used 4 pins. designator is the pin number, Name is A1 reflecting Anode 1. So, for the pins I used 1,2,3,4 as designators. Name is A1,A2,C1,C2 for cathode, anode. This is a dip 4 package so the pins need to go some where......I simply drew a line attaching them all in parallel and wanted to see if when compiling this very basic circuit I would get errors. I am getting hundreds of duplicate net names and duplicate component designators. This was more simple with a two pin led...lol I attached some screenshots. Maybe I just forgot something here. Thank you in advance.
Best regards,
Adam
Best regards,
Adam
Anatoliy , 10-16-2019, 04:27 AM
Well, Have a look in the datasheet to know exactly what connections there are!
In this case, we are given a shematic symbol reference within the package! nice
As you can see, i kept is simple on the symbol- i did not add name as gate, source, or drain; pin naming and degisnators as follows-
(moved it to make it visible, i kept the component small) - three points to make here:
1) all the numbers on the outside, are the pin designators and have to be unique to the pin, in every component. meaning: more advances, if you have component with multiple parts, you still need to have unique pin designators.
2) as you can see- on the left i gave each pin a unique pin name, it is preferable if you are planning to upload your work to the public- where people can download your work and import it to their own CAD.
and on the right- i gave each pin the same name- this is what i usually do, (less clutter), since i keep all my work within my office, here everyone uses altium.
NOTICE how in every pin, you have 4 little dots. make sure that those dots are on the outside of the component, it is the snapping point of different nets to those pins.
hope this answers all of your questions regarding Schematic library editing in altium
In this case, we are given a shematic symbol reference within the package! nice
As you can see, i kept is simple on the symbol- i did not add name as gate, source, or drain; pin naming and degisnators as follows-
(moved it to make it visible, i kept the component small) - three points to make here:
1) all the numbers on the outside, are the pin designators and have to be unique to the pin, in every component. meaning: more advances, if you have component with multiple parts, you still need to have unique pin designators.
2) as you can see- on the left i gave each pin a unique pin name, it is preferable if you are planning to upload your work to the public- where people can download your work and import it to their own CAD.
and on the right- i gave each pin the same name- this is what i usually do, (less clutter), since i keep all my work within my office, here everyone uses altium.
NOTICE how in every pin, you have 4 little dots. make sure that those dots are on the outside of the component, it is the snapping point of different nets to those pins.
hope this answers all of your questions regarding Schematic library editing in altium
robertferanec , 10-16-2019, 04:50 AM
@awhite I do not see reference designators for that diodes - fix that first and it can help. Did you specify in the library designator as "D?"
Paul van Avesaath , 10-16-2019, 04:59 AM
Hi,
I would use the default symbol for a Led, because it makes for a cleaner schematic. you can double the pins onto eachother so it looks like one pin but in fact are multpile.
If you hide the designator the image look clean, when you attach a wire to it, it will give a small blue ball on it indicating there are multiple pins on it.
I would use the default symbol for a Led, because it makes for a cleaner schematic. you can double the pins onto eachother so it looks like one pin but in fact are multpile.
If you hide the designator the image look clean, when you attach a wire to it, it will give a small blue ball on it indicating there are multiple pins on it.
awhite , 10-16-2019, 09:16 AM
I guess I am missing something. Reference designator is set as D? Pins are set as Pin1, Pin2, Pin3, Pin4, and named as C1,A1,C2,A2. I am not really sure what why that would be incorrect? My errors when compiling Pcbproject are Duplicate Component Designators. Clearly I am missing something but everything worked as I took the altium essentials class. I have no clue what I could have done wrong. The pins wont change, the device is the same component there is just 80 of them per board??....
awhite , 10-16-2019, 09:21 AM
OOOOhhhhhhhhhhhh........................Sorry guys...I didnt annotate. What a dumb mistake. Problem solved
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