A Cooling Fan for the “Homemade” Tablet (2)

cooljobfan1Figure 1: Fan addition is shown keeping the LCD and enclosure interior cool after two hours of operation. Click to enlarge.

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The little fan keeps the “homemade” tablet #1 cool, even after an extended run-time playing my ogg tunes (two hours at the time the temps were taken in figure 1).  As a result, we’re marking the great fan operation on the Odroid powered homemade tablet a success.

speakers-portable-plps1Figure 2: The portable speakers that are my favorites for the tablet. Click to Enlarge.

I realized that any speakers that I shoe-horned into the enclosure would be too small to effect a nice sound.  Instead, I purchased an all-in-one (both stereo channels) portable speaker.  Looking at the graphic, the power light (top center of the (triangular profile) speaker) is the dividing point for left and right channels. The unit is made by Philips, and is model number Philips SBA1610/37 Philips Silver Portable Speaker.  The unit is powered by three AAA batteries (NiMH rechargables, natch) – and has already run over thirty hours for me, but I tend to play it less loudly these days.  The connector swivels into the case when not in use, and then is out of the way.  The real intent is to make it a convenient connection to cell phones, I’d guess.

Notice the spat of yellow fingernail polish on the power connector, and on the connecting jack itself: it’s a preventative measure for keeping the correct supplies lined up with the applicable homemade this or thats, since I’m accumulating a few of those.  This particular pet project (tablet #1) can take any run voltage from about 9VDC to about 30 VDC, but I have exceptions in my arsenal.

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Note: the author does not have a recent, applicable background in circuit building, or battery related issues, so this is presented as the work of a hobbyist, and is not meant for duplication by others. Readers should look elsewhere for design advice and info.

The Odroid C1 is a product of Hardkernel, at http://www.hardkernel.com, and is not affiliated with this author or site. Adafruit, Inc. supplies the 8-pin SOIC breakout boards.  They are at http://www.adafruit.com, and have no affiliation with this author or site.  The Philips SBA 1610 is a product of Philips NV (Amsterdam) and has no affiliation with this author or site. All other trademarks usd here are acknowledged as belonging to their respective owners. Any trademark references put in this text do not imply any affiliation with the owner of the trademark.