Tagged Questions

2
votes
1answer
49 views

Eagle configure autorouter to solder components (except vias) only on bottom layer of double sided PCB

In double sided PCBs it is difficult to solder through hole components like IC bases, headers, etc. in the top layer. Normally the Eagle autorouter places the solder pads on both sides. That is, in a ...
1
vote
1answer
83 views

Strange Eagle Copper Pour Issue

I'm experiencing an interesting issue with Eagle's polygon copper pour. As you can see below, the solid red is the copper pour area, while the dashed line is showing the complete polygon outline (I ...
1
vote
1answer
112 views

Eagle 6 : Problem Importing Custom Parts

Recently started working on a new PCB board for a dev kit. I ran in an issue where I had made a custom part for the M50-3501042 2x10 male header with 0.05'' (1.27mm) pitch. Note also that this is a ...
2
votes
1answer
105 views

Eagle TI CC2540 Ground Pad?

I have been working on a PCB layout. It's my first time working with Eagle, and my first time prototyping a board. I am using a CC2540. I understand that this uses a RHA package which has a ground ...
2
votes
1answer
155 views

Eagle PCB design Libraries?

I am doing my first Eagle PCB design. It's been going smoothly so far, however, I just hit a road bump. I am using a TC1269 Regulator, but cannot find the CAD library for it. I have looked into ...
5
votes
1answer
233 views

How good is my xtal design on my pcb?

I'm designing a board for a school project using eagle. I thought I could get away with using the onboard clock of the PIC18 since it's not doing a whole lot (mostly just LEDs), but one of its tasks ...
3
votes
1answer
71 views

Editing embedded components in Eagle

I got a PCB schematic and layout in Eagle format from a website and I want to edit the dimensions of components. Since everything is embedded inside the PCB layout and schematic, I find it difficult ...
1
vote
2answers
250 views

How is it possible to make Eagle parts containing multiple components?

Is there any way to achieve the following (or something equally helpful) in Eagle? I would like to create a library Part that itself consists of multiple components pre-connected and pre-routed (by ...
5
votes
3answers
327 views

CAD Schematic pin arrangement approach

I was looking for related questions here, and the closest one I could find was this one: Industry Practices for Schematic Design? However, it does not address my specific question, so here goes: I am ...
5
votes
3answers
289 views

Questions with overhanging silkscreens in eagle cad

I am currently using several footprints in my pcb design which have tPlace silkscreens that extend beyond the board boundaries, and I was wondering what the implications of such silkscreens are since ...
5
votes
2answers
598 views

Eliminating Thermal Isolation Pads in Eagle

When creating a ground plane in Eagle, Eagle automatically creates a thermal isolation for the pad. My first question is, does this isolation limit the current compared to a pad that is ...
4
votes
1answer
1k views

Difference between drill layer, hole layer, and milling layer in Eagle

What is the difference between the drill layer (44), the hole layer (45), and the milling layer (46) in Eagle PCB?
9
votes
6answers
1k views

Finding air wires in Eagle

I am almost done routing a board. However, is telling me that there is still one more wire. I have looked but I just can't seem to find it. Is there a to make Eagle tell me where it is?
6
votes
1answer
443 views

Eagle is refusing to tie ground pads of SMD components to the ground plane

So, long story short, I copied Eagle's standard RCL library to prune it down to the SMD essentials and to verify the packages. I removed the old library entirely, so it's not even loaded anymore, and ...
1
vote
1answer
99 views

Vias not visible after Eagle Cam Processor

I am trying to generate a printout of the PCB using Eagle Cam processor to get it made. My settings are as follows: Section: * Device: PS Style: pos. Coord and Fill pads are enabled Layers: top, ...
4
votes
2answers
2k views

Missing components in Eagle Library

I am missing libraries of certain ICs for use in Eagle. Can someone guide me to a source where I can find these IC libraries? I am asking this question to find out if there is any central repository ...
4
votes
3answers
1k views

Blind/buried vs. through hole vias?

I'm trying to learn PCB design and, from what I've read and seen, there appear to be three different types of vias: Through hole - goes all the way through the board Blind - goes from the top or ...
4
votes
5answers
934 views

Can a trace connect to a pad on the top layer?

I'm making my first two layer PCB and have am unsure of whether it's ok to connect a trace to a pad on the top layer (if the pad is on the bottom layer, that is). Here's a picture to show what I'm ...
3
votes
2answers
834 views

How do I draw a PCB antenna in Eagle without DRC errors?

I'm designing a board that should contain an antenna I found in an application note. I'm using Eagle and I tried to create a library part for the antenna. However, since the antenna is basically a ...
8
votes
2answers
664 views

Is it normal to have a rats-nest of VCC/GND traces under an IC?

I'm attempting to route a simple board, the first I've done in 15 years since I routed a 12V linear power supply in the equivalent of mspaint. This board consists mainly of an LPC2387, which is an ...
3
votes
1answer
838 views

How to tell size of Eagle library component?

I am working on my very first PCB design using Eagle. In my design, I will be using a 10W 10 Ohm power resistor. Since it isn't a "standard" size, I'm having trouble finding the component in Eagle. In ...