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SG-Pi Boxing Considerations

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    Here are some issues you might encounter in building an enclosure for your SG-Pi,
    and a few suggestions, based on early usage.

    micro USB connector

    This is a flimsy way to supply power, but obviously the fact everyone has standardized
    on it is beyond our control.  You'll need to be careful to provide a way to keep
    that connector attached to the Pi inside your enclosure, as cables get shifted.  I'm
    inclined to heat-glue the micro-USB cable to the RPi's micro-USB port.

    push-button switch cable

    The ribbon (or other) cable is thin and I'm not thrilled about having exposed solder joints
    inside the case.  I suggest careful routing of the cable to avoid it getting disrupted by the
    jostling of big heavy coax cables.  It might be best to install the pushbutton switch on
    the side of the case opposite where coax and power cables come in.

    exposed GPS hat

    If your Pi + GPS hat is mounted in the enclosure without a metal lid blocking the sky view,
    you may be able to avoid using an external GPS antenna.  This may also improve ventilation
    to the Pi.  Make sure you've positioned the Pi so that it's not too easy for a screwdriver to slip
    off one of the DC terminal block screws (if you're using those) and into the Pi!

    micro SD card prestidigitation

    Unlike the beaglebone, the Pi 2/3 micro SD card slot is not spring-loaded.  My kids can pull
    that card out, but I can't.   I found that adding a small piece of scotch tape attached to the
    terminal portion of the labelled side of the micro SD card (i.e. the thick edge to the beginning
    of the first notch) helped.  I folded over the free side of the tape to leave nothing sticky
    exposed.  But it's still hard to align the card when inserting. 
    micro_SD_card_with_tape_pulltab.jpg
    This will become important as people start swapping out SD cards as the faster
    way to grab data from the field.

    positioning of the RPi inside the enclosure

    The Pi should be positioned inside your enclosure so that the micro SD card slot is clear of any
    other installed components, such as a DC terminal block.  If using a GPS Hat and a metal case
    for the Pi within your enclosure, it might make sense to install the GPS antenna coax terminal
    on the same side as the micro USB port, or opposite to the USB ports, so that the Pi's long
    side opposite from the micro USB port can be against the side of your enclosure.

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     micro_SD_card_with_tape_pulltab.jpg
    attachment of tape to ease removal of micro SD card. DO NOT put tape on the unlabelled side of the micro SD card.
    247.76 kB01:21, 4 May 2017adminActions
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