it is much easier to poke into the breadboard.])
(p [check])
(itemize
- (item [why are we using a solid core wire?]))))
+ (item [why are we using a solid core wire?])))
+ (subsubsection
+ :title [solder]
+ (p [do this next section and the previous with just one lead at a
+ time.
+ solder the stranded wire and solid core wire, as shown
+ in this video.])
+ (figure :legend "batteries / prepare leads / solder"
+ (video
+ :file "2-batteries/0-prepare-leads/2-solder.ogv"))
+ (p [soldering is the process of joining 2 metal things with
+ solder.])
+ (enumerate
+ (item [use the helping hands to grab the wires and hold them in
+ place.])
+ (item [clean off the tip of the soldering iron if it has been
+ sitting still for a while.
+ this cleans off corroded metal.])
+ (item [apply some solder directly to the tip of the soldering
+ iron.
+ this creates a pool of solder on the tip.
+ we will use this to transfer heat to the wires.])
+ (item [put the soldering iron up to the wires.
+ we want the wires to be hot enough to melt the
+ solder.
+ at the same time, poke the solder into the wire.
+ the solder will start melting and quickly spread to
+ hot parts of the wire.
+ there will be smoke.])
+ (item [move the solder away, then move the iron away.]))
+ (p [check])
+ (itemize
+ (item [should the wires melt the solder?])
+ (item [why should we clean off the tip of the soldering iron?])
+ (item [why do we put more solder back on the tip of the iron?]))))
(subsection
- :title [deck attachment]))
+ :title [deck attachment]
+ (subsubsection
+ :title [motor battery pack attachment]
+ (p [attach the motor battery pack to the robot deck.])
+ (figure
+ :legend "batteries / placement / motor pack"
+ (video
+ :file "2-batteries/1-placement/0-motor-battery-pack.ogv"))
+ (p [we will use glue dots to attach the motor battery pack to the
+ deck.
+ the pack could be placed anywhere, but we will place it
+ in the lower left side of the robot.
+ this battery pack has 4 AA batteries in it.
+ each battery has 1.5 volts difference between the positive
+ and negative side.
+ the batteries are connected in series.
+ the total voltage difference for the whole battery pack is
+ the sum of the individual voltages, which is 6 volts.])
+ (enumerate
+ (item [make sure you are placing dots on the side of the battery
+ pack without the on/off switch.])
+ (item [peel off a glue dot for each of the corners of the
+ battery pack.])
+ (item [when placing the battery pack, make sure the screw hole
+ aligns with a hole on the deck.]))
+ (p [check])
+ (enumerate
+ (item [why place the glue dots on the side of the battery pack
+ without the on/off switch?])))
+ (subsubsection
+ :title [arduino battery pack attachment]
+ (p [attach the arduino battery pack to the robot deck.])
+ (figure
+ :legend "batteries / placement / arduino pack"
+ (video
+ :file "2-batteries/1-placement/1-arduino-battery-pack.ogv"))
+ (p [next, we will attach the arduino battery pack to the deck.
+ again, the pack could be placed anywhere, but we will
+ place it in the lower right side of the robot.])
+ (enumerate
+ (item [make sure you are placing dots on the side of the battery
+ pack without the on/off switch, just as before.])
+ (item [peel off a glue dot for each end of the pack.])
+ (item [when placing the battery pack, make sure the screw hole
+ aligns with a hole on the deck.]))
+ (p [check])
+ (enumerate
+ (item [why align the screw with a hole on the deck?])))))
(section
:title [motors]
(subsection
projects / challenge-bot / blobdiff