Author Topic: Trying to recreate a open source schematic -- Need Help.  (Read 359 times)

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Offline redgear

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Trying to recreate a open source schematic -- Need Help.
« on: September 19, 2019, 06:09:56 am »
Hey all,

I am trying to recreate a open source motor controller project using Eagle CAD and I am facing few difficulties.

1) How do I calculate the value of the resistors R103,R104 and R6(is it 22 times of R0?) and shunts R54 and R53?

2) The schematic says R6 resistor is not placed, should I not include it while designing the Gerbers?





3) I am able to create labels with a pointed end on the right side but I am not able to get it to point double side or towards the left.




4) How do I differentiate between a bus and a wire?

Thank you!
 

Online Rerouter

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #1 on: September 19, 2019, 06:27:55 am »
1. R103/104 are both 22.0 Ohms. R53/54 are 0.001 ohms. R6 would be a 0 ohm resistor or a solder bridge
2. R6 is an option. Add a footprint but you dont have to populate it.

The last 2 i am not sure about
 
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Offline redgear

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #2 on: September 19, 2019, 06:37:15 am »
Thank you!
 

Offline redgear

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #3 on: September 20, 2019, 06:36:18 am »

3) I am able to create labels with a pointed end on the right side but I am not able to get it to point double side or towards the left.

(Attachment Link)


4) How do I differentiate between a bus and a wire?

Thank you!

Can someone help?
 

Offline oPossum

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #4 on: September 20, 2019, 07:19:59 am »
3 - Right click to rotate

4 - Busses are blue, nets are green
 
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Offline redgear

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #5 on: September 21, 2019, 06:08:56 am »
3 - Right click to rotate

I tried doing it, but the pointed end still points the other side. Also, there is no option to have pointing end on both sides of the label

4 - Busses are blue, nets are green

So as per the schematic, everything is a bus?
 

Offline oPossum

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #6 on: September 21, 2019, 09:37:34 pm »
In your original schematic everything in blue is what Eagle calls a net. So in Eagle the blue lines will be green.
 
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Offline Ross Robotics

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #7 on: September 22, 2019, 02:38:52 pm »
3 - Right click to rotate

I tried doing it, but the pointed end still points the other side. Also, there is no option to have pointing end on both sides of the label

It doesn't matter which way the arrow's pointing.  Anyone who is reading your schematic will be able to follow the Net.
 
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Offline sokoloff

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Re: Trying to recreate a open source schematic -- Need Help.
« Reply #8 on: September 22, 2019, 03:11:35 pm »
1) How do I calculate the value of the resistors R103,R104 and R6(is it 22 times of R0?) and shunts R54 and R53?
The R is the indication that it's both a resistance value and the R serves as the decimal point.

22R0 --> 22.0 Ω
0R001 --> 0.001 Ω
 
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