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Concrete Creations

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Written by Paulo Administrator Paulo Administrator
Category: electronicsanddiy electronicsanddiy
Published: 25 December 2017 25 December 2017
 
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A collection of concrete creations I've made.

 

 

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Adjustable Electronic Load Using Incandescent Lamps

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Category: electronicsanddiy electronicsanddiy
Published: 23 July 2016 23 July 2016
 
 

This is a link to the article I published in the July 2016 edition of the Nuts & Volts magazine: an adjustable electronic load using old incandescent lamps.

 

 

 

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The Shiny 'Roominator' - Silicon Valley Room Rent Estimator

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Written by Paulo Administrator Paulo Administrator
Category: Miscellaneous Miscellaneous
Published: 23 June 2016 23 June 2016
 
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Planning to rent a room in the Silicon Valley in 2016? This tool may help.

 

 

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RC Snubber Calculator Spreadsheet

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Written by Paulo Administrator Paulo Administrator
Category: electronicsanddiy electronicsanddiy
Published: 25 May 2016 25 May 2016
 
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An Excel-based calculator eases the design of RC snubbers in power switching applications.

 

 

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How To Fix Carbon Contacts Under Rubber Keypads

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Written by Paulo Administrator Paulo Administrator
Category: electronicsanddiy electronicsanddiy
Published: 17 May 2016 17 May 2016
 
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Carbon contacts under rubber keypads are known to wear-out over time. This article shows one way to repair them.

 

 

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Slider Controller with Auto-Reverse and Variable Speed Control

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Written by Paulo Administrator Paulo Administrator
Category: electronicsanddiy electronicsanddiy
Published: 12 April 2016 12 April 2016
 
 

How to build an electronic camera slider controller with variable speed and auto-reverse features.

 

 

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Kukulkan Mayan Temple

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Written by Paulo Administrator Paulo Administrator
Category: Theme Galleries Theme Galleries
Published: 30 April 2016 30 April 2016
 
 

Mayan culture is fascinating to me. I find the elegance of their buildings, particularly the temples in form of pyramids, something to admire and explore. In this gallery, I post a selection of images from the great Kukulkan temple in Chichen-Itza.

 

 

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LC Low-Pass Filter Analysis in R

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Category: electronicsanddiy electronicsanddiy
Published: 30 November 2014 30 November 2014
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LC Low-Pass Filter Analysis using the open-source computing language R .

 

 

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Camera Recording Monitor Using Current Sense Circuit

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Written by Paulo Administrator Paulo Administrator
Category: electronicsanddiy electronicsanddiy
Published: 22 March 2016 22 March 2016
 
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How to make a camera recording monitor using a current sense circuit.

 

 

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Canon FD 50mm f/1.4 lens with the Sony NEX

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Category: photography photography
Published: 30 August 2014 30 August 2014
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My review of the Canon FDn 50mm f/1.4 adapted to the Sony E-mount (NEX) mirror-less camera.

 

 

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Olympus OM 200mm f/4 lens versus Canon EF-S 55-250 IS

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Category: photography photography
Published: 03 May 2013 03 May 2013
 
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The In this article, I compare an "old" Olympus OM Zuiko 200 mm lens with a modern Canon EF-S 55-250mm IS lens set at 200mm.

 

 

 

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More Articles ...

  1. Transistor Amplifier Calculator
  2. My Lab Tour
  3. Diode temperature sensor calibration using Arduino and SHT15 module
  4. Sound Activated Laser Parking System

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