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Sylvain Leroux
Lives in Lorient, France
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"A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP" -- Leonard Nimoy

I grieve with thee.

#spock
Leonard Nimoy's final tweet is the perfect way to remember the iconic actor.
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Sylvain Leroux

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Dans le monde du développement web sous Python, Django est incontournable. Mais c'est oublier bien vite que des alternatives existent. Pyramid est l'une d'entre-elles. Ce rejeton du projet Pylon mérite bien qu'on lui accorde un petit moment. Voilà qui est fait avec ce tutoriel qui vous guidera lors de vos premiers pas avec Pyramid...
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À en croire Google Trend, dans le monde du développement Web avec Python, Django se taille la part du lion. Mais des alternatives existent. C'est justement à l'une de ces alternatives que je vais m'intéresser aujourd'hui. À l'occasion d'un (tout) petit projet d'initiation à la programmation Web ...
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Sylvain Leroux

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According to Google Trend, the Django web framework is the most popular framework for web development using Python. But what about the outsiders ? Have you tried them ? Do you favor them ? Or would you prefer to avoid them ?
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Sylvain Leroux

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'ever wanted to know where that light is coming from ?

Here are some close-up pictures of a LED diode. The quality isn't very good as we look through the epoxy case -- and I used a low-cost USB endoscope to take those pictures.

Anyway, you can see on the side view the (gold?) wire bond connecting the anode lead frame to the semiconductor die inside the reflective cavity. The die itself is the little square-shaped thing visible on he top views. I don't know its exact size, but for this 5mm LED, we are very probably at or below 0.5mm². As you can see, when the LED is lit, the whole semiconductor emits light.
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If you don't know what is a "free software" or "why you need it", worth spending some time watching the video from the FSF front page : https://www.fsf.org/?pk_campaign=video

Oh, yes,  one more notice: that video is encoded using the Vorbis codec and stored in an Ogg container. Both are free software. Surprisingly enough (?) Google+ is unable to share a link to them properly (say: by adding a thumbnail...). And some "media player" might even not support those formats without installing a "plug-in" (probably with some nice warnings in pop-up windows™ : "Are you sure?" "No, you don't want that?" "This is your last chance !" "This may broke your computer !!!"). Whereas, those players all support proprietary format like MPEG that are protected by patents, so requiring the payment of licensing fees to the patent holders... Freedom you said ?
The FSF is a charity with a worldwide mission to advance software freedom.
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Sylvain Leroux

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Which is better for a "microscopic show and tell" ?

http://www.adafruit.com/products/636 or http://www.adafruit.com/products/1061

One has high resolution, but 220x magnification. The other has VGA resolution but x300 magnification. I will use it with Linux.
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I have and use the one on the right. Linux plug and plays it on 3 different distro's.. It reads as a Proxima 2.0 cameral. Two small modifications. One. Buy a radio shack soldering assistant stand. It comes with alligator clips and a magnifying glass and wet sponge. It has the ball joint connections. Two. put a hair tie, rubber band or some kind of elastic over the focus wheel. The focus does not like staying set. The Hair tie works the best. Rubber band wants to grab too much.

The best part is the variable light levels. Adjustable on the camera.
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Sylvain Leroux

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While doing some clean up at work, we found a batch of CI in Ceramic Dual In-line Package (CDIP). They where equipped with a small window that could be removed to expose the inner electronics (see attached picture).

Probably they are EPROMs, but without any marking it is hard to tell more. Some clues ?
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Sylvain Leroux

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Dans le monde du développement web sous Python, Django est incontournable. Mais c'est oublier bien vite que des alternatives existent. Pyramid est l'une d'entre-elles. Ce rejeton du projet Pylon mérite bien qu'on lui accorde un petit moment. Voilà qui est fait avec ce tutoriel qui vous guidera lors de vos premiers pas avec Pyramid...
 ·  Translate
À en croire Google Trend, dans le monde du développement Web avec Python, Django se taille la part du lion. Mais des alternatives existent. C'est justement à l'une de ces alternatives que je vais m'intéresser aujourd'hui. À l'occasion d'un (tout) petit projet d'initiation à la programmation Web ...
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Sylvain Leroux

Discussion  - 
 
 
According to Google Trend, the Django web framework is the most popular framework for web development using Python. But what about the outsiders ? Have you tried them ? Do you favor them ? Or would you prefer to avoid them ?
 ·  Translate
View original post
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Sylvain Leroux

➥ Show-and-tell  - 
 
 
'ever wanted to know where that light is coming from ?

Here are some close-up pictures of a LED diode. The quality isn't very good as we look through the epoxy case -- and I used a low-cost USB endoscope to take those pictures.

Anyway, you can see on the side view the (gold?) wire bond connecting the anode lead frame to the semiconductor die inside the reflective cavity. The die itself is the little square-shaped thing visible on he top views. I don't know its exact size, but for this 5mm LED, we are very probably at or below 0.5mm². As you can see, when the LED is lit, the whole semiconductor emits light.
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Sylvain Leroux

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 #IC
 
A few weeks ago, I've posted about some "mysterious IC" I found at work. I don't have more info about it beside the various interesting comments you posted. As a last attempt to solve the mystery, here are some close-ups of the IC including the only markings I was able to find on the die.

Here is the link to the original discussion : https://plus.google.com/114217785008367438543/posts/82HxR75WShP
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Sylvain Leroux

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While doing some clean up at work, we found a batch of CI in Ceramic Dual In-line Package (CDIP). They where equipped with a small window that could be removed to expose the inner electronics (see attached picture).

Probably they are EPROMs, but without any marking it is hard to tell more. Some clues ?
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It was common packaging for EPROMs and microcontrollers that had EPROM on-die.
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Have him in circles
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Très bon photographe capable de dépoussiérer même un sujet aussi éculé que les photographie de mariage! Professionnel et sympathique, Hervé Cohonner sait diriger même les sujets les plus timides pour obtenir un résultat qui sort des sentiers battus. Je recommande chaudement.
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