(document
:title [challenge-bot]
+ (toc)
(chapter
:title [mechanical]
+ :number "0"
(p [let's build your robot!])
(section
:title [arduino to deck]
+ :number "0"
(p [let's attach the arduino to the deck.])
(subsection
:title [required materials]
(item [what are we doing to reinforce the motor tabs mechanically?])
(item [does hot glue make an electrical connection?])))
(subsection
- :title [deck attachment]))
- (section
- :title [wheels]
- (subsection
- :title [tread])
+ :title [motor mount]
+ (p [now let's attach the motor mount to the motor.])
+ (subsubsection
+ :title [angle bracket to motor mount]
+ (p [first, attach the angle brackets to the motor mounts with
+ #6-32x3/8 inch screws.])
+ (figure
+ :legend "motors / mount / angle bracket"
+ (video
+ :file "3-motor-assemblies/1-motor-mount/0-angle-brackets.ogv"))
+ (p [if you cover up 2 of the holes on the motor mount, the
+ remaining holes look like a surprised face.
+ these are the holes to attach the angle brackets.
+ make sure the angle brackets on one motor mount are attached
+ in a mirror image to the other.])
+ (p [check])
+ (enumerate
+ (item [should the motor mounts have angle brackets attached in
+ a mirror image fashion?])
+ (item [why should the motor mounts have angle brackets attached in
+ a mirror image fashion?])))
+ (subsubsection
+ :title [motor mount to motor]
+ (p [now attach the motor mount with angle brackets to the motor.])
+ (figure
+ :legend "motor / mount / mount to motor"
+ (video
+ :file
+ "3-motor-assemblies/1-motor-mount/1-motor-mount-to-motor.ogv"))
+ (p [we will attach the motor mount to the motor using #4 bolts.
+ these screws are thinner than the #6 bolts we have used.
+ to clamp down on the motor, we will use a #4 nut.
+ the white side of the nut should face outward.
+ this section of the nut will keep the nut from jiggling
+ loose off the bolt during normal operation.
+ the head of the #4 bolt is a philips head, so we will
+ use a philips head driver for it.])
+ (p [check])
+ (enumerate
+ (item [is the #4 bolt thicker or thinner than the #6?])
+ (item [do you have a ratcheting socket wrench, or not?]))))
(subsection
- :title [motor]))
+ :title [deck attachment]
+ (p [now that the motor assemblies are together, we will attach them
+ to the deck.])
+ (figure
+ :legend "motor / motor assembly to deck"
+ (video
+ :file "3-motor-assemblies/2-motor-assembly-to-deck.ogv"))
+ (p [when attaching the motor assembly to the deck, be sure to push
+ the assembly as far outward from the center of the robot
+ as you can while tightening it down.
+ this will give more clearance to the wheels of the robot
+ so they do not rub the deck.])))
(section
:title [caster]
- (subsection
- :title [deck placement]))
+ (p [the caster will go at the back of the robot and provide a third
+ point of contact for the robot, making it easier for it to
+ balance.])
+ (figure
+ :legend "caster"
+ (video :file "4-caster-to-deck.ogv"))
+ (p [check])
+ (enumerate
+ (item [what would happen if the robot did not have a caster?])))
+ (section
+ :title [wheels]
+ (p [now we will attach the wheels.
+ this makes the motor movement transform into robot movement!])
+ (figure
+ :legend "wheel"
+ (video :file "5-wheel-to-robot-assembly.ogv"))
+ (p [check])
+ (enumerate
+ (item [does the robot's wheels scrape the deck?])
+ (item [what would happen if the robot had no wheels?])
+ (item [what does the tread do?])
+ (item [what is the tread?])
+ (item [what kind of screw is used?])))
(section
:title [sonars]
- (subsection
- :title [deck placement])))
+ (p [we are almost done with mechanical assembly!
+ this next step is to add the sonar sensors to the robot.
+ sonar sensors are what the robot uses to detect distances.
+ it sends out a signal, then listens for a response and
+ keeps track of how long it takes.])
+ (figure
+ :legend "sonar sensors"
+ (video :file "6-sonar-sensors-to-deck.ogv"))
+ (p [check])
+ (enumerate
+ (item [are your sonar sensors pointy pins facing in toward the
+ arduino?])
+ (item [was it difficult to get the sonar into the holder?])
+ (item [what would happen if it was easy to slip the sonar sensor
+ into the sonar holder?]))))
(chapter
:title [wiring and software]
(section
:title [serial]
+ :number "0"
(subsection
:title [software on computer]
(subsubsection
projects / challenge-bot / blobdiff