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Schematic Basics Part 3: ERC

Checking Connectivity Errors with an ERC in Autodesk EAGLE

Greetings and welcome back to Schematic Basics Part 3! If you have been following along on our journey so far, then you know that we are closing in on the end of the road for your schematic journey. There’s one last step before you can check off on your schematic design and move onto your PCB layout – checking for connectivity with an Electrical Rule Check, or ERC. Let’s do it.

What is ERC?

If this is your first time designing a schematic then the term Electrical Rule Check might be a bit new. This is a handy little tool that you’ll always want to keep in your engineering toolbox, as it helps to point out common errors in your schematic. An ERC will check for the following issues:

  • Are all of your nets properly connected and labeled on your schematic?
  • Do you have any conflicting outputs/inputs on your schematic?
  • Are there any open or overlapping pins and ports on your schematic?

You can think of an ERC as a second pair of eyes; it will always be there to help you find the missing details that you may have overlooked! Of course, an ERC is not meant to be a replacement for reviewing your schematic manually, so don’t rely on it as your first level of the defense.

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Schematic Basics Part 2: Nets and Values

Schematic Basics Part 2:

Welcome back!  This is Schematic Basics Part 2. In our previous blog, we covered how to create your first schematic in Autodesk EAGLE and how to place symbols. In this blog, we’re going to take things a step further by learning how to add connectivity between your schematic symbols with the help of Nets. Then once everything is connected, we’ll cover how to add values to parts. Let’s get started!

First Things First

Like in Schematic Basics Part 1, there are a few details that we need to cover before soaking in some knowledge:

Use Nets, Not Wires

There are two kinds of wires in Autodesk EAGLE, the standard Wire, and the Net. But which do you use when creating connections between your symbols? Here’s how it works:

You don’t want to use the Wire wire-icon icon when adding nets to your schematic. The only reason to use the Wire option is for adding detailed line drawings to your schematic.

You do want to use the Net net-icon icon to wire up your schematic symbols. This will always be your go-to action when you need to connect your symbols together.

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Schematic Basics Part 1: Search, Place, Move

How to Search, Place, and Move Your Symbols in Autodesk EAGLE

You’ve got all the right ideas, but do you know what to do with them? Schematic design is needed to get those ideas out of your head and into action! Schematic symbols from the foundation of every electronics design, and if you’re like most engineers, then you probably started doodling your circuit on the back of a napkin or your notebook. Now that you’ve got all that circuitry on paper, it’s time to put it into practice in your PCB design tool.

A Few Disclaimers

There are a few things we’d like to cover before we journey further, specifically:

Know Your Symbols

It’s good to have a general understanding of all the parts that you can place on a schematic and their appearance. We’d recommend saving this handy reference list, or even printing out the chart below and hanging it above your desk.

Why? First, this will be a huge help if you ever need to review any schematic. And second, there’s a ton of symbols, many of which look different depending on if you’re looking at a US or international schematic. It’s near impossible to remember all of those, so keep this chart handy.

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Top 10 PCB Component Placement Tips for the PCB Beginner

PCB design is both an art and a science. There’s a ton of technical know-how and measurements to consider when dealing with trace widths, layer stackups, schematics, etc. But then you get to the artistic side of PCB design with component placement, and this is where things get interesting.

The truth is, there is no “right” way to place components, and this freedom is ultimately what makes the PCB layout process so dang fulfilling and creative. It’s all up to you and what you want to design. That’s not to say that you can do whatever you want. There’s still the humbling reality that the digital design you create needs to be manufacturable in its physical form, which is why you’ll want to follow the 10 tips below to make the most of your component placement flow.

What’s So Important About Component Placement?

There’s a common saying that goes something like this – PCB design is 90% placement and 10% routing. This is entirely accurate. Taking the time to precisely place your components will make your life a whole lot easier when it comes time to route everything, while also giving your board its best electrical performance. But what happens if you just slap your components down without care?

  • Hours Wasted. You’ll likely create a nightmare for yourself when you find out that some of your parts don’t even have enough space to be routed because you packed them too close together. The worst component placement jobs can lead to an entire board that needs to be started again from scratch.
  • Busted Boards. Let’s say you do manage to place down some components and traces and ship your files off to your manufacturer. Next thing you know you might get a board back, that doesn’t work because your parts weren’t soldered correctly (more on this later).
  • Ugly Aesthetics. Let’s face it, as engineers we love symmetry and precision, and there’s nothing more unsettling than seeing a board that wasn’t given some proper love and care during its component placement. It’s just plain lazy.

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Learn about our top 10 schematic design tips

The Top 10 Tips to Draw Your Next Schematic Design Like a Pro

Ready for that next great idea for a PCB project? It’s all starts with your schematic design. Unlike a PCB layout, which is all about the physical placement of parts and copper, a schematic is more theoretical, describing how components are electrically connected. And while you won’t necessarily know how parts physically connect when drawing a schematic, you will know exactly how a signal will move through your circuit. Sounds easy enough, right? Not so fast.

In the world of electronics design, there are good schematics, and then there are bad schematics. The difference ultimately comes down to a simple question – is someone going to be able to understand and troubleshoot your circuit based on your schematic immediately, or will reading your schematic just lead to more confusion? If you’ve been designing bad schematics in the past, or you just don’t know the best practices, worry not. Here we’ve got our top 10 tips that will show you how to draw your next schematic design like a pro!

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AVR Studio 4 Tutorial for Beginners

In this tutorial, you will learn how to use AVR Studio, it’s components & how it works! But before that, you need to install AVR Studio in your system, click here if you don’t have, if you have already downloaded follow the instructions & you are done.

 

AVR Studio was developed by Atmel in order to provide a development environment to the developers. With AVR Studio one can program any type of AVR IC’s by using some basic hardware. This software is having an inbuilt editor, simulator & programmer.It comes with its own integrated C compiler the AVR GNU C Compiler (GCC). As such you do not need a third-party C compiler. It provides a single environment to develop programs for both the 8-bits, 32-bits and ARM Cortex-M AVR series of microcontrollers.I would recommend you to

I would recommend you to use AVR Studio 4! Why? Well because it is a basic version, you will get used to it in quick session. for higher versions click here 

After Installing AVR Studio on your drive you have run the application by clicking on its application icon
click to continue…

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Setting up the Softwares

Install the following Softwares in order to start coding.

AVR Studio 4

In order to proceed forward, you need is to have some Softwares installed in the system. You will find several Softwares regarding AVR coding but the one I recommend is to use AVR studio 4 because this a great tool, one can easily write codes for Atmega Microcontrollers plus it has some great features such as integrated assembler & simulator built in the software. AVR studio supports C/C++ & assembly language codes

Click here to download AVR Studio 4

Install AVR studio 4 by following the installation process and you are all set for coding.

 

click to continue…..

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USBasp For Windows

This Tutorial Will Guide You How To Install  Device Driver Of USBasp for Windows

 

The installation process is same for all types of usbasp Programmers available in the market. Follow these simple steps in order to configure your system compatible with USBASP Programmers

STEP 1: Download USBASP Software from this following link: USBasp-win-driver

STEP 2: Extract these files to the drive you want by using any extracting software (7-Zip or Winzip)

STEP 3: Connect your USB Programmer to your system and a message like this will pop up.
 
click to continue….