attach leads to motors

diff --git a/guide/3-motor-assemblies/0-leads.ogv b/guide/3-motor-assemblies/0-leads.ogv
new file mode 100644 (file)
index 0000000..0f97249
Binary files /dev/null and b/guide/3-motor-assemblies/0-leads.ogv differ

diff --git a/guide/challenge-bot.scm b/guide/challenge-bot.scm
index 53c0cc91356b8cabe6ba38ab786f7dae3080a92b..8272d5a4caa11f47b15ff487d65d4888a6657677 100644 (file)
--- a/guide/challenge-bot.scm
+++ b/guide/challenge-bot.scm
@@ -456,9 +456,60 @@
   (section
    :title [motors]
    (subsection
-    :title [leads])
-   (subsection
-    :title [mount])
+    :title [leads]
+    (p [attach leads to the motors to supply the motor with power.])
+    (figure
+     :legend "motors / leads"
+     (video
+      :file "3-motor-assemblies/0-leads.ogv"))
+    (enumerate
+     (item [strip both the green and yellow wire on both ends.
+                  strip one side only 1/8 inch.
+                  strip the other side about 1/4 inch.])
+     (item [use the end of the wire stripper to bend a hook in the wire.
+                make this hook on the side of the wire with a smaller
+                exposed section.])
+     (item [do not bend the wire so that the exposed wire runs alongside
+               the sheath.])
+     (item [put the hooks through the tabs on the motor.
+                make sure to place the green and yellow wire on the
+                correct side of the motor.
+                match the side of the motor that already has wires
+                attached.
+                wrap the rest of the wire around the motor in order to
+                keep the wire from falling off.])
+     (item [once the wire is in place, wrap solder around the motor tab
+                 and wire.
+                 heat up the solder, motor tab and wire with the
+                 soldering iron.])
+     (item [test the solder joint with the 9v battery.
+                 touch the battery leads to the motor leads.
+                 make sure the 9v battery is on.
+                 if the motor moves, the solder joint is good!])
+     (item [get section of electrical tape, roughly 100mm
+                (about 4 inches).
+                slide the middle of the tape under the wires.
+                this tape will keep the solder joints away from the
+                metal band around the motor.])
+     (item [the zip tie will hold the wires to the motor.
+                wrap the zip tie on the round part of the motor where
+                it meets the square portion of the motor.
+                this will provide mechanical support for the solder
+                joints.
+                once the zip tie is wrapped, use wire strippers to cut
+                off the excess zip tie.])
+     (item [cover the solder joint with hot glue.
+                  this will further keep the solder joints from corroding
+                  in the air's moisture.
+                  it will also keep the joint safe from anything poking
+                  in.]))
+    (p [check])
+    (enumerate
+     (item [should the electrical tape go between the wires and the
+                   metal band?])
+     (item [are the motor tabs strong?])
+     (item [what are we doing to reinforce the motor tabs mechanically?])
+     (item [does hot glue make an electrical connection?])))
    (subsection
     :title [deck attachment]))
   (section