@camilla, I read the pdf manual of the Aerocene Exploration tools, very nice! Fortunately I got the Kit with the soldering already made. I whish just suggest to better explain the images 26-30, at a first glance it was not clear that it was referring at the PCB track, to cut and solder; I was seeing just two letters “HI” instead of the drawing of the tracks 
!!! May be picture 26 should show clearly that the “HI” is a close-up, using an arrow or a magnifying glass.
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