I want to improve my PCB Layout skills. Is there any good training you can recommend? Please help me!

LONG_EM

I want to improve my PCB Layout skills. Is there any good training you can recommend? Please help me! [Copy link]

 

      I can currently make 2/4 layer boards, impedance control, differential, equal length, and stacking, but I am not good at it because I lack systematic learning and practical experience. I usually use an AD drawing board, but I draw by myself without anyone to give me some guidance, so I always feel it is difficult to find the direction. I would like to ask if there is an ideal training institution, I want to go there for systematic learning and training, I am in Guangzhou; or if any seniors need to do odd jobs, I will raise my hand to sign up

okhxyyo

I haven't joined any organization so I can't recommend it to you directly. I think the most important thing is to practice. You can post your practice works and let everyone see them. Netizens who see them will point out any problems, and then you can make adjustments again.

chenzhufly

Practice more

qwqwqw2088

Since we can make 2/4 layer boards, why not ask a specific question and let everyone comment on it? Why bother with such general questions and wear out your keyboard fingers?

曹伟1993

You can find a good painting by someone else on the Internet and compare it with your own, or take your painting out for "public viewing". I believe someone will point out the problems for you.

LONG_EM

okhxyyo posted on 2018-1-6 09:13 I haven't joined any organization so I can't recommend it to you directly. I think the most important thing is to practice. You can post your practice works and let everyone...

OK, thank you, I'm drawing a piece now and will upload it later. I hope you can give me some advice.

LONG_EM

qwqwqw2088 posted on 2018-1-6 17:57 Since we can make 2/4 layer boards, why not ask a specific question and let everyone discuss it? Why bother with such a general question and wear out the keyboard fingers...

Makes sense! I have a question to ask. 1. When routing, as long as I follow the 3W principle, can I run parallel lines at will (for the sake of beauty), or are some lines still not allowed to run parallel? Can you give me an example? 2. When designing a 4-layer board, are the top/bottom usually not laid out as a whole? Except for the ground, should it be left empty? ?

LONG_EM

Cao Wei 1993 posted on 2018-1-8 10:35 You can find a good painting by someone else on the Internet and compare it with your own, or take your painting out for "public viewing". I believe someone will point out the problem for you...

Yes, thank you. I am drawing a board and will show it to you later. I hope to get your advice.

LONG_EM

chenzhufly posted on 2018-1-6 11:17 Practice more

Yeah

LONG_EM

chenzhufly posted on 2018-1-6 11:17 Practice more

Yeah

okhxyyo

LONG_EM posted on 2018-1-9 01:01 Makes sense! I have a question to ask. 1. When routing, as long as I follow the 3W principle, can I run parallel lines at will (for the sake of beauty), or do some lines depend on...

If you want to ask a question, it is best to post it directly, so that more netizens can see it in time and reply to your question in time

LONG_EM

okhxyyo posted on 2018-1-9 09:32 If you want to ask a question, it is best to post it directly, so that more netizens can see it and reply to your question in time

OK, thank you

qwqwqw2088

LONG_EM posted on 2018-1-9 01:01 Makes sense! I have a question to ask. 1. As long as I follow the 3W principle when routing, can I run parallel lines at will (for the sake of beauty), or do some lines still...

1. Can you give everyone an example of "can I run parallel lines at will (for the sake of beauty), or do some lines still cannot run parallel" 2. Is the Top/Bottom generally not paved as a whole? Except for those that are covered with ground, should it be left empty? ? It depends on the function of the board. I feel that the original poster has read too many theoretical books on PCB routing. PCB routing is a job that is in line with the actual board. Don't ask empty questions.

LONG_EM

qwqwqw2088 posted on 2018-1-9 20:44 1. Can you give us an example of "can we run parallel lines at will (for aesthetics), or do some lines still not run parallel?" 2. Is it Top/Bott ...

I don't understand this, so I would like to ask you. 1. Assuming that it is Q0-Q7 of 595, Q0-Q7 are all used as enable terminals for other chips, can they be run in parallel on the basis of complying with the 3W principle? 2. Can two TTL-level RX/TX lines be run in parallel? 3. In the second case, can 3.3V power lines be run at a certain line distance? 4. Is there any case where running parallel lines at 3W still causes crosstalk? Can you give an example?

qwqwqw2088

LONG_EM posted on 2018-1-9 22:30 I don't understand this, so I want to ask you. 1. Assuming it is Q0-Q7 of 595, Q0-Q7 are all used as enable terminals of other chips, can they be routed in parallel while complying with the 3W principle...

1. Assuming it is Q0-Q7 of 595, Q0-Q7 are all used as enable terminals of other chips, can they be routed in parallel while complying with the 3W principle? If PCB routing needs to consider 3W, the main board function is that 3W is for broadband signals or high-frequency signals. For the same type of signal lines, there is no need to consider 3W. Moreover, the eight parallel signals Q0-Q7 of 595 are low-frequency signals and can be ignored. For digital circuits such as clock signals and reset signals, appropriate 3W processing can be considered.

qwqwqw2088

2. The data transmission rate is not high, and the signal amplitude is large, not easily interfered with, parallel or non-parallel routing is OK 3.3.3V is the power line, the power line should be as wide as possible, the routing form should be diverse, try not to go around, and try to keep the spacing as large as possible to reduce crosstalk

qwqwqw2088

As for what kind of crosstalk, it will appear on the clock or periodic signal line, or there will be crosstalk in the data, address, control and LO routing. There are many reasons for crosstalk, not necessarily parallel routing. Try to avoid parallel routing layouts. Devices affected by crosstalk are generally terminal-matched impedance, such as in network communication PCBs.

LONG_EM

qwqwqw2088 posted on 2018-1-10 09:15 As for what kind of crosstalk is, it will appear on the clock or periodic signal line, or there will be crosstalk in the data, address, control and LO routing. There are many reasons for crosstalk, ...

OK, OK, thank you! I hope to have the opportunity to ask you more in the future!

DB_DOG

We are both in Guangzhou, we can communicate with each other

LONG_EM

DB_DOG posted on 2018-1-11 21:35 We are both in Guangzhou, we can communicate with each other

Welcome, please give me more advice