(p [the arduino should be placed as shown in this picture.]
(figure :legend "arduino to deck / place arduino"
(image :file "arduino-to-deck/3-place-arduino.png"))
+ [here's a closeup]
+ (figure :legend "arduino to deck / place arduino closeup"
+ (image :file "arduino-to-deck/4-place-arduino-closeup.png"))
[the top edge of the arduino should line up with the underside
of the holes closest to the edge of the deck.
on the arduino, there's a hole on the top left.