Limpkin's blog

Hello everyone, here is a blog about me but especially about the different projects I did, with all the sources and files that I made / used :).

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15Jun 2014

My business card v2

At the end of this month, I'll be leaving my current job. I therefore thought it'd be a nice occasion to build a new business card for my future interviews:

Business card v2

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24Apr 2014

Easy-phi project: High Speed Logic Gate

Next in our Easy-Phi articles series is the High Speed Logic Gate board:

Logic gate board

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30Mar 2014

A Personal Perspective on Managing an Open Hardware Project

I'm sure you must have noticed by now that during these last months I didn't put many projects on this blog. This is mainly because I'm currently working on the Mooltipass project, an offline password keeper idea I launched last december.
I've written articles on Hackaday about the technical aspects of this project, but none about my personal experience managing a team of contributors from all over the globe. I feel it's something that only has its place on my blog, so here we go...

Mooltipass prototype

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09Jan 2014

The Updated Bill of Materials and Stock Management Tool

Stock management and Bill of Materials generation are usually neglected when it comes to making projects, so I updated a tool I made a while back...

BoM generator

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02Jan 2014

Easy-phi project: Low Cost Dual Discriminators

In physics experiments, it is often required to detect any kinds of electrical signals. That's why we developed this module:

Univ input

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06Nov 2013

The Beast: who needs an OS anyways?

In this article, I'll present you 'the beast': a cortex M4-based platform that has plenty of communication interfaces and to which you can connect a lot of different peripherals:

Beast with peripherals

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09Oct 2013

Easy-phi project: the template module

Next in our Easy-phi descriptions: the template module.

banner

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29Sep 2013

Entering the CNC world with a probotix fireball

After having borrowed my work's CNC so many times, I figured it would be better if I bought one :-)

fireball V90

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19Sep 2013

Easy-phi project: the rack and its backplane

So I'm sure that after the previous post where I presented the easy-phi project, you'd like to see the actual hardware. So we're going to start with the rack:

Easyphi rack small

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09Aug 2013

Making the electronics for a $7 USD doppler motion sensor

I had no idea that you could find this kind of motion sensors on the internet for so cheap... But they come with a catch: you need to design some electronics for them.

PCB Back

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02Aug 2013

The easy-phi project: a new platform for experimenters

Hello everyone,
In this post, I will present a new open hardware project we are working on at my work....

Big rack

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21Jun 2013

The whistled: from whistle to sound recognition (and also some reminders for tinkerers out there)

Once again, here is a short video to show off a simple sound recognition algorithm implemented on the whistled:

As the platform could already do whistle recognition, I thought it would be nice to implement this nice feature...

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26Apr 2013

The whistled: how to remake a dozen years old project the right way

Hey guys :-)
As the slightly changed adage goes: a video is worth a thousand words:

Interested? Have a look at my tindie page or click below to get more technical details...

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30Mar 2013

Amplifying nanosecond pulses for quantum physics experiments

Have no fear... even if this project sounds complex, you'll easily learn in this article many things about high speed electronics and PCBs.
In fact, my goal here is to teach you some basics about all the new problems that arise when you're dealing with GHz signals :-) .

PCB with cabinet and heatsink

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01Feb 2013

Why you should never forget decoupling capacitors...

A few words to explain how forgetting one decoupling cap could affect the rest of your system...

noise_3.3_transfo.png

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04Dec 2012

Atsam3u + SDCard + USB cdc/msd + fat32 with at91lib & Chan's fat code

Yep, for the first time this will be (mostly) a code article :-) .
But if one day you want to make a Hi-Speed (480Mbit/s) USB composite device with CDC (communication) and MSD (mass storage) classes, this is the post you'll want to read.

Platform PCB

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03Oct 2012

My new business card

As it seems to be a new trend out there, I thought I would give it a go :-)

Assembled business card

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02Sep 2012

Automatic Bill of Materials generation for Digikey components in an Excel file

If you are ordering your projects' components on digikey... this is the script you have been missing!

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12Aug 2012

Current controlled boost LED driver and black soldermasks

Ok I agree, the two are not connected :-) ...

MAX16834_PCB.JPG

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17Jul 2012

Altium vs Cadence: a totally subjective opinion

Let's imagine that, for some reason, you'd like to create a 4+ layer PCB, and that free tools such as eagle or kicad aren't enough for you (let's say for high speed PCB design or complex schematics).
You'd then have to choose between the two (but not only) major softwares available now: Altium Designer or Cadence Orcad Suite.
This is therefore my opinion about them.

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