(chapter
:title [mechanical]
(section
- :title [arduino]
- (subsection
- :title [arduino placement])
- (subsection
- :title [first hole and screw]
+ :title [arduino to deck]
+ (subsection
+ :title [required materials]
+ (p [you will need the things in this picture.
+ ,(figure :legend "arduino to deck / required materials"
+ (image :file "arduino-to-deck/0-required-materials.png"))
+ ,(itemize
+ (item [medical kit with bandages])
+ (item [safety goggles])
+ (item [drill bit \(we will determine size in a moment\)])
+ (item [drill])
+ (item [alan wrench])
+ (item [wood block])
+ (item [arduino])
+ (item [#6-32x3/8\", four of them]))]))
+ (subsection
+ :title [first hole]
(subsubsection
:title [choosing drill bit])
(subsubsection
(subsubsection
:title [holding drill])
(subsubsection
- :title [drilling])
+ :title [arduino placement]
+ (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.
+ that hole should be mid-way between two of the holes in the
+ grid of holes on the deck.
+ put the arduino hole between the third and fourth holes
+ from the left side of the deck.]))
+ (subsubsection
+ :title [drilling]))
+ (subsection
+ :title [first screw]
(subsubsection
- :title [6-32 by 3/8\" screw]
- (p [the "6" part is how big around it is.])
- (p [the "32" part is how close the threads are to each other.])
- (p [the "head" is the flat part where some tool, like the alan
- wrench, can exert force to spin the screw.]))
+ :title [fastening arduino to deck using #6-32x3/8\" screw]
+ (p [the "#6" part of "#6-32x3/8\"" is how big around the bolt is.
+ it is related to wire gauge.
+ bigger numbers mean larger screw.
+ smaller numbers means smaller screws.])
+ (p [check
+ ,(itemize
+ (item
+ [in the motor assembly, there are #4-40x1.25\" screws.
+ are those fatter, thinner, or the same thickness as the
+ #6-32x3/8\" screws?]))])
+ (p [the "32" part is a measurement of how close the threads are to
+ each other.
+ this is related to the angle of the thread, which is also
+ called pitch.
+ it is a count of how many times the thread wraps around one
+ inch of the screw body.])
+ (p [the head is the flat part where some tool, like the alan
+ wrench, can exert force to spin the screw.])
+ (p [check
+ ,(itemize
+ (item [how many times will the thread wrap around one inch of
+ the screw body?])
+ (item [what about 2 inches?
+ how many times will the thread wrap around two
+ inches of the screw body?]))]))
(subsubsection
:title [fasten the arduino board to the deck]
(p [push the 6-32 screw into the deck from the underside and at the
same time, spin the 6-32 screw clockwise while looking
- down on its head. twist until the bottom of the screw is
+ down on its head.
+ twist until the bottom of the screw is
about to stick out on the top side of the deck.])
(p [hold the arduino board flat to the deck and line up the arduino
- hole so the screw can come up through it. continue
- tightening the screw into the deck, spinning the same
- direction as before. tighten until the screw head touches
- the deck. do not continue tightening])
+ hole so the screw can come up through it.
+ continue tightening the screw into the deck, spinning the same
+ direction as before.
+ tighten until the screw head touches the deck.
+ do not continue tightening after that.])
(p [the arduino should still be flat against the deck still, just
as it was before tightening the screw.]))
(subsubsection
can the arduino board still rotate a few degrees?
warning, if you rotate the arduino board too much, you
will unscrew it from the deck and you'll have to screw it
- back in. rotating a few degrees should be ok.]))
+ back in.
+ rotating a few degrees should be ok.]))
(subsubsection
:title [arduino board move relative to deck]
(p [without any screws, the arduino board can move independently of
projects / challenge-bot / blobdiff