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Rachael's Blog

16 posts
1. Introduction  This is the sixth part of my EAGLE Tutorial series, following on from EAGLE Tutorial: Library Part Creation Part 5 - Multiple Symbol Devices. If you haven't read the previous articles then I recommend you take a look there first as they set the scene for this part of the tutorial series and gives some general tips on using EAGLE.   In the previous instalment, right at the very end I gave a little example of using an attribute to hold a link to a data sheet to allow it ...
1. Introduction  This is the fifth part of my EAGLE Tutorial series, following on from EAGLE Tutorial: Library Part Creation Part 4 - Advanced Packages and Package Variants. If you haven't read the previous articles then I recommend you take a look there first as they set the scene for this part of the tutorial series and gives some general tips on using EAGLE.   We've already covered how to create complete devices and from the previous tutorials we learned all the steps required to cr ...
1. Introduction  First of all I would like to start with an apology to those who started following this series early on, I appreciate that it's been a while since I have published any articles in this series, and for this I am sorry, but I will be publishing much more regularly from now on.   I've been getting a few queries on how to create various packages both here and elsewhere, so I thought I would post up an additional example of creating a package in EAGLE based on the latest q ...
1. Introduction  This is the fourth part of my EAGLE Tutorial series, following on from EAGLE Tutorial: Library Part Creation Part 3 - Creating Devices. If you haven't read the previous articles then I recommend you take a look there first as they set the scene for this part of the tutorial series and gives some general tips on using EAGLE.   So far we have created our MSP430F22x2 library with just one package option, the TSSOP-38 (DA) package. If we look at the datasheet for the part ...
1. Introduction  This is the third part of my EAGLE Tutorial series, following on from EAGLE Tutorial: Library Part Creation Part 2 - Creating Symbols. If you haven't read the previous articles then I recommend you take a look there first as they set the scene for this part of the tutorial series and gives some general tips on using EAGLE. In this third part, we'll be taking a look at creating devices in a library and in particular, our example from the previous parts will continue using th ...
1. Introduction  This is the second part of my EAGLE Tutorial series, following on from EAGLE Tutorial: Library Part Creation Part 1 - Creating Packages. If you haven't read that article then I recommend you take a look there first as it sets the scene for this part of the tutorial series and gives some general tips on using EAGLE. In this second part, we'll be taking a look at creating library symbols and in particular, our example from part one will continue using the MSP430F22x2 as the b ...
1. Introduction  One of the fundamental pieces of work that is required to create schematics and PCB layouts is creating library parts. Lots of packages ship with a large library of parts, including EAGLE, and there are numerous resources on the web for downloading parts but often these parts are inconsistent with each other, potentially have errors or are just not quite what you need. Most experienced users will prefer to have their own set of libraries which they use and find it often qui ...
1. Overview  For a while now I have been building up a library of tools and utilities written in ULP for EAGLE. Whilst some of them are very much tailored to my design flow, some of them are more generally applicable so I have decided to start to make some of them available for others to use via a GitLab repository. It'll take a little time to clean up and publish some of them so the currently available selection is quite small. I'll add new stuff and enhance the existing stuff over time th ...
So some of you may have noticed my status update from last week confessing my weakness when it comes to purchasing test equipment Well that purchase was a Keysight  U1733C LCR meter and I have been after one of these for quite some time I've looked at all sorts of options for an LCR meter from the cheaper Peak Altas LCR and ESR widgets to more expensive Rohde Schwarz bench LCR meters In the end I settled for a hand held LCR meter from Keysight I already have the Keysight  U1272A multim ...
Overview  For those of you that saw my blog yesterday on my experiments with a cheap LM2596S based DC-DC converter board you are no doubt aware that under one of the test conditions my first test board emitted the magic smoke. If you haven't seen that already I suggest you go and take a look there first:   Lab Experiments - Performance Evaluation and Testing of LM2596 DC-DC Converter Board   I was setting up my second board today so I could continue where I left off and get that ...
Overview  Over the Christmas break I was thinking about my blogs for this year and decided as well as following the builds for my various lab equipment projects (they've unfortunately been on hold while other work took priority!), I would do a series of experimental blogs too. These will be a mix of evaluations of off the shelf boards and experiments with various design concepts. This is the first of these and I will look at an LM2596S board by a company called eBoot which I purchased from ...
1. Overview  This is the second instalment of my blog series following my Vacuum Pick and Place Assistant project. If you haven't seen the first part and want to get an overview of what this project is all about then I recommend you go take a look at that first. You can find Part 1 of this series here: https://www.element14.com/community/people/rachaelp/blog/2016/12/20/lab-equipment-projects-vacuum-pick-and-place-assistant-part-1   I'll be honest, I have been struggling a little with ...
There's been a lot of talk on shabaz's blog for his pick and place buddy recently and this gave me the motivation to get on with the very similar project I have been planning. There are some great ideas in that project and the subsequent discussions which will definitely enhance what I was planning and as a result of the inspiration from there have come up with a bunch of additional ideas for things I would like to add to my own. This will be the first blog of several as I go through the design ...
I thought I would give a brief overview of my current lab setup to show the equipment I use and how I have things configured, and outline how I want to change things etc, and what additional equipment I would like to have which will lead into a future blog post outlining some of the projects I am planning to augment my current setup. I should note that what you cant see in the picture below is that the other side is another two desks with my other computers on them which is where I do most of my ...
1. Overview   To maximise available space on my benches for actual electronics work, my lab bench PC is a tiny Gigabyte BRIX BXBT-1900 which I have mounted on the wall behind the bench. The monitor is then a 24" flat panel display mounted on an arm to keep it off the bench. I'm running the latest Linux Mint 18 with the Cinnamon display manager. From an efficient utilization of space point of view this works really well and I can move the monitor around on its arm so the display is flat to ...