AmateurRadio.com

These may not be a surprise to you but the popular electrical CAD package, Eagle, has add ons plugins, scripts or whatever they are technically called. Most of these would probably be really useful if I ever knew what I was doing but one stands out. Its called Eagle-up.

Eagle-up takes the PCB as you’ve laid it out and puts it into the equally popular 3D CAD programme Google Sketch up. The plugin allows you to see the PCB in 3 dimensions and allows you to add components from the extensive library or draw out your own. The end result is a potential a photo realistic rendering of what you have just designed. I’m using it to place the various parts on so I can design a case to fit the MSFduino. I want to laser cut an acrylic case and Sketchup let’s you export to an svg  file by, you’ve guessed it, a plugin.

A bit of useful information to share if that’s your kind of thing.

When you use software regularly, thing become natural. Especially when you can find errors in your work and they need correcting. Over the past few evenings I have spent several hours trying to correct inconsistencies between the schematic and board on my first PCB project, the MSFduino.

There’s nothing fancy about the MSFduino. Its what I’ve started calling my shack clock project. Its a cut down version of the popular Arduino uno and a 60khz receiver with an LCD to display the date and time.

I got so frustrated in the end I started all over again. That made life an awful lot easier. So easy in fact that I wrapped up the Gerber files in a nice zipped package and sent them off to be prototyped. Seeing as this was my first attempt I have agonised a bit about getting it right but in the end I just had to press the send button.

Here’s hoping

The Arduino platform has struck a bit of a chord with me. It is very well supported with both hardware and software, which makes it ideal for people like me who don’t have the background or skills to get a project off the ground. There are plenty of resources around the internet that off either ready made projects (just add hardware) or Books that explain the concepts and procedures in detail. Even the books tend to be supported by websites that have the code available for download if you wish.I came across a new(?) book by Leigh Klotz Jr, WA5ZNU titled ‘Ham radio for Arduino & Picaxe’ seems to be available through the ARRL but not the RSGB at the moment.

The book is supported by a website which has forums, code and links to the various projects that are presented. The links include the almost ubiquitous Sparkfun website, which has been supplying bits and bobs to US based hobbyist’s as well as those internationally for some time. The Sparkfun site is also a good place for technical data and resources such as libraries for Eagle.

Anyway, as usual I digress. The book is currently available through the ARRL and possibly in the future through the RSGB. The contents page looks like it has a whole heap of projects that will keep us busy for a long time. If its your cup of tea then I hope you can get a copy and enjoy the projects.

But I’m getting closer to getting a PCB made. I’ve solved the issues with the drill files but have now got a new problem. The schematic has now been corrupted, meaning I’ll have to redo that. it shouldn’t take long but its a case of one step forward and two back at the moment. I really wanted to get this PCB order before Christmas but it may not make it. Still here’s a little shot of the Gerber files rendered as a pcb by one of the online Gerber viewers called Mayhew Labs. Its nice to see it almost in the flesh as it adds another check to the process before I go ahead and spend money on (hopefully not) practice boards.

One day I’m just going to have to lump it and press the button. There are only so many checks you can do but I’ve had a check by our local homebrew superhero Kevin, M0KHZ and his eye is far better than mine.

Excuse me whilst I explode

For the past few weeks I have been designing a simple circuit for my Arduino clock. Its the first PCB I have designed and I’ve needed a bit of help from a few sources to get it right. All that help has been really welcome.

One thing just isn’t happening for me though. Exporting the Eagle files for manufacturing. Namely the drill file part of it. The design has been done in Eagle, because it has a number of libraries of commonly used parts to help numpties like me design stuff. It also has a function to produce the gerber files so your PCB can be manufactured. But the drill file bit just isn’t happening for me. Countless hours googling the answer have come up empty so I’m going to have to think of a way round it.

This should be the easiest bit, maybe it is in other packages but its just not doing it in Eagle. I think I will have to take a break from it for a while as it is starting to wind me up.

I’ve spent a bit of time over the last day or so putting together a schematic for my Arduino / MSF60Khz shack clock. The previous iteration has been sat on my desk in breadboard form doing exactly what it should but a bit ugly.

I’ve designed the schematic on Eagle and made a bit of progress with support from the Arduino forums and think I’m nearly there. The eventual aim is for the club to have another option for those looking for a bit of soldering for the next step in their licence, or just as a simple thing for the shack.

I hadn’t appreciated how long it would take to get the spaghetti on the paper and I’m sure there’ll be more efficient ways to do it but here’s my first attempt after considerable help from the forums.

If you’re interested there are more details on the project pages which will be updated in due course.

I’m sure there are those who could do this in a few minutes, but, for the more challenged like myself it has been quite a steep curve to climb but a worthwhile one. It’ll be lovely to get something finished before the end of the month but we’ll see how well it goes. I’m struggling a bit with the PCB with little things like mounting holes and getting the correct drill size / grid.

If anyone fancies being a checker for this and the board then I’m always happy to accept guidance.

Whoever spots all the errors first wins a prize!

I took this week off as it was the kids half term and the great British weather meant that not much of it was spent outside. The idea was to get out on the bike and get on the air on the fells. Not a chance! Time for a bit of radio with the helpful hands of a 4 year old and a bored 6 year old.

The shack PSU had packed up again and after wrestling with it for a few hours I gave up and took the Atmega 328 IC out of my Arduino Uno after programming it with the MSF clock code to attempt to build a very bare bones design that will be my first PCB since about 1990, when I made a truly iconic lights on reminder for my non existent car at University.

The video is just me powering up the clock and getting quite excited that it worked. Enjoy.