At last, version 0.4 of my ScanBand prototype has rolled off the presses (or, at least, the printer in the lab.) This version tossed out the color strip, which turns out to be less useful than I had hoped. It is also significantly narrower, making it more like existing mid-upper arm circumference measuring devices. There is also a window alongside the scanning window that displays the millimeter measurement in numbers, so that the band is still useful in situations with computers or power.
Even more importantly, the version is able to be print two ScanBands completely on a single 8.5x14 inch sheet of paper, BUT can also (potentially) print out on a continuous roll from a 3-4 inch wide label printer. I'd really like to test this latter scenario in Malawi, since the good folks at Baobab have indicated that this might be a great way to print these out as needed.
Attached to this post is the zip file with the PDF of the most recent version.
This is a 11x17 inch sheet of paper that holds two copies of the ScanBand. They also will fit on an 8.5x14 legal sheet. The two strips you see cut out are cut further, folded, and glued together to make a completed ScanBand.
This is the top-most portion of the ScanBand. It is built with the small windowed piece, which is flipped over and turned 90 degrees over the band. Its flaps are then glued or taped around the back.
This is the area of the ScanBand that the bar-code scanner is designed to hit. The numbers also give human-readable output for the measured circumference.
The bar-code scanner is fired at the ScanBand on Becky's arm and a measurement is sent to the computer.
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