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Friday, April 13

  1. page Kumasi, Ghana edited ... In 2011 we took some basic sets of electronic tools to conduct some "maker" exercise…
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    In 2011 we took some basic sets of electronic tools to conduct some "maker" exercises with 8th grade students in Kumasi, Ghana. Although there is no equivalent to Radio Shack, many important electronic components -- AC to DC power converters for example--are available at low cost in the form of electronic "cast-offs." Calling it e-waste is not quite accurate, since the Ghanaians already recycle many materials, but this kind of "upcycling" -- re-purposing cast-off parts -- is much better for the environment and health than burning plastic wires to get the copper, and other toxic forms of recycling that are common there.
    {ghana1.jpg}
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    with undergrads atin the KNUST Creativity Group to develop
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    to a discarded power screwdriver.
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    angle changes. For more about the Creativity Group and its e-waste innovation see http://www.creativitygroup.org
    {heliostat2.png}
    (view changes)
    11:29 am

Tuesday, May 9

  1. page Kumasi, Ghana edited ... In 2011 we took some basic sets of electronic tools to conduct some "maker" exercise…
    ...
    In 2011 we took some basic sets of electronic tools to conduct some "maker" exercises with 8th grade students in Kumasi, Ghana. Although there is no equivalent to Radio Shack, many important electronic components -- AC to DC power converters for example--are available at low cost in the form of electronic "cast-offs." Calling it e-waste is not quite accurate, since the Ghanaians already recycle many materials, but this kind of "upcycling" -- re-purposing cast-off parts -- is much better for the environment and health than burning plastic wires to get the copper, and other toxic forms of recycling that are common there.
    {ghana1.jpg}
    In 2014 we worked with undergrads at KNUST to develop a solar reflector. Sun-tracking was to be done by a small photo-voltaic powered motor. But how to gear it down enough to deal with the weight and torque? The solution was to use bike parts connected to a power screwdriver. The screwdriver head was mounted with a bike derailer gear, and the bike chain went from that to the wheel gear that would normally connect to pedals. The wheel gear wound a string connected to the rim of the reflector. An Arduino with a power transistor was used to time pulses so that the turning rate was synced to the sun angle changes.
    {heliostat2.png}

    (view changes)
    9:12 pm
  2. file heliostat2.png uploaded
    9:09 pm

Friday, December 9

  1. page E-Waste Sites edited {ewaste site.jpg} {ewaste.jpg} ... person's treasure"! An example location of an elect…
    {ewaste site.jpg} {ewaste.jpg}
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    person's treasure"!
    An example location of an electronic recycling site is in the Jonsson Engineering Center at Rensselaer Polytechnic Institute, directed by the map above. In this specific "Tech Dump," there were printers, TVs, computers, computer towers, etc. Some of the e-waste was fully intact, whereas others appeared damaged and smashed. Electronic

    Electronic
    recycling sites
    (view changes)
    8:39 am
  2. page E-Waste Sites edited {http://i.imgur.com/EvOLo.png} JEC {ewaste site.jpg} ... say, "One man's person's trash…
    {http://i.imgur.com/EvOLo.png} JEC {ewaste site.jpg}
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    say, "One man'sperson's trash is another man'sperson's treasure"!
    An example location of an electronic recycling site is in the Jonsson Engineering Center at Rensselaer Polytechnic Institute, directed by the map above. In this specific "Tech Dump," there were printers, TVs, computers, computer towers, etc. Some of the e-waste was fully intact, whereas others appeared damaged and smashed. Electronic recycling sites like this are a great way for a community to share and not be wasteful of resources.
    (view changes)
    8:37 am

Tuesday, November 29

  1. page E-Waste Sites edited {http://i.imgur.com/EvOLo.png} JEC {ewaste site.jpg} {ewaste.jpg} In many communities, there a…
    {http://i.imgur.com/EvOLo.png} JEC {ewaste site.jpg} {ewaste.jpg}
    In many communities, there are "electronic waste dumps," where people drop off broken or old electronic technology to be recycled. Although the original owner sees no value in the out-dated or damaged technology, there may still be valuable components within that could be revived for an e-waste project. As they say, "One man's trash is another man's treasure"!
    An example location of an electronic recycling site is in the Jonsson Engineering Center at Rensselaer Polytechnic Institute, directed by the map above. In this specific "Tech Dump," there were printers, TVs, computers, computer towers, etc. Some of the e-waste was fully intact, whereas others appeared damaged and smashed. Electronic recycling sites like this are a great way for a community to share and not be wasteful of resources.

    (view changes)
    2:13 pm
  2. file ewaste.jpg uploaded
    2:01 pm
  3. file ewaste site.jpg uploaded
    2:01 pm
  4. file IMG_8425.JPG uploaded
    1:59 pm
  5. file IMG_8426.JPG uploaded
    1:59 pm

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