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J Silva
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I make stuff!
I make stuff!

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LEGO Traffic Light
This project has been lingering on for long, maybe two years or so... and I'm still not done... So here goes... My son had asked me to do a real traffic light for his LEGO Duplo train. I had tens of Atmel's ATTiny15L lingering around I thought it would be a...

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Dr. Vogel's Analog Computer
In 2014 I discovered the Analog Computer Museum and I was intrigued over a small analog computer in the collection . Dr.Vogel's small computer is an educational computer with very limited capabilities, but still it looked like a nice project to replicate. T...

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Monster-B-Gone
Last year Make:Magazine had an article where they built a Monster-B-Gone detector. I did not had the same processor board ( a trinket ) and having a stash of Attiny15L, I thought I could use them instead. There is one big problem with this MPU, speed. It on...

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ATTinys
I finally have the time to post some old projects (some of witch I'm taking the opportunity to finish). These are all around the now dead Attiny15L from Atmel, but the techniques might be used in the newer tiny Atmel (Attiny25,45 and 85, Attiny10 Attiny104,...

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An ARM experience
Well... we're back at writing. Two years ago NXP lauched a 8pin dip ARM with 4K FLASH and 1K RAM, lots of people started doing things with it, as most other ARM processors (even Cortex M0) are multi-leaded-smd-monsters. This one , on the other side, looks l...

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Building the "new" MSPGCC from TI and RedHat
Ok, after a system update (opensuse 12.3 to opensuse 13.1) I was without my MSP430 compiler and launchpad connection. Also since the last time a new compiler version appeared (from 4.6.3 to 4.8.0) so I thought I could build (install) a new one. TI also got ...

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Using TI Launchpad in linux
Texas Instruments made a good effort in having free and community tool chain for their family of MSP430 low power microcontrollers. Before the tool chain had to be build by the user and that had the usual problems (dependencies, headers, etc). You will need...

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Current increase for MAX6957
This will be a mostly Analog Electronics post... In a project I made with friends we had a Raspberry Pi driving a MAX6957 for driving some LEDs. The MAX6957 was connected to the SPI bus of the RPI and the driving functions were developed in python (if you'r...

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We're back..
I've been busy (very), but I'm still here... Starting the first post of the year on the end of March is not the best indication of a success blog (which I don't have)... but I'll try to post some old stuff that I did meanwhile. I've lost a bit of touch with...
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