X-Git-Url: http://challenge-bot.com/repos/?a=blobdiff_plain;f=guide%2Fchallenge-bot-questions.org;h=e47b89ad7cc56b0426e357dc07274d5802fbcbc6;hb=275b2f5a49958feecb635c682396ee939bb2c8eb;hp=9da19687d63e3359765de3f5b6353c64310f55ec;hpb=fb33ef7f9bd5f9e356d7b81ff1bc710043a7bc50;p=challenge-bot

diff --git a/guide/challenge-bot-questions.org b/guide/challenge-bot-questions.org
index 9da1968..e47b89a 100644
--- a/guide/challenge-bot-questions.org
+++ b/guide/challenge-bot-questions.org
@@ -1,21 +1,72 @@
 * challenge-bot questions
 ** mechanical questions
 *** arduino to deck
-    these questions are about attaching the arduino to the deck.  you used
-    a drill and drill bit to make holes for bolts to go through.  we
-    drilled through the arduino into the deck.
-    1. what would happen if you used a larger drill bit than the one
+    these questions are about attaching the arduino to the deck.
+    you used a drill and drill bit to make holes for bolts to go
+    through.
+    we drilled through the arduino into the deck.
+**** drilling
+     1. what would happen if you used a larger drill bit than the one
        you used for drilling holes for the arduino?
-    2. why do people use drill bits that are smaller or the same size as
-       existing holes in circuit boards, like the blue arduino?
-    3. why did we use a drill bit that was wider than the body of the
-       bolt used to hold the arduino?
-    4. why did we drill through the arduino, rather than marking holes
-       and using the drill to make holes where the marks were?
-    5. how does the drill hold onto the drill bit?
-    6. what would happen if the drill bit teeth were not flat on the
-       drill bit?
-    7. name some reasons for the arduinos placement on the deck.
-       1. could it have been placed diagonally?  why or why not?
-       2. could it have been placed in any other location? why or why not?
-       3. could it be upside-down?  why or why not?
+     2. why did we use a drill bit that was wider than the body of the
+        bolt used to hold the arduino?
+     3. why do people use drill bits that are smaller or the same size as
+        existing holes in circuit boards, like the holes in the blue
+        arduino?
+     4. why did we drill through the arduino, rather than marking holes
+        and using the drill to make holes where the marks were?
+     5. how does the drill hold onto the drill bit?
+     6. what would happen if the drill bit teeth were not flat on the
+        drill bit?
+     7. how can you break the drill bit when drilling?
+     8. should we drill at full speed?
+        why or why not?
+**** bolts
+     1. the bolts used to attach the arduino are 6-32 bolts.
+       the bolts used to attach the motor to the motor mount are
+       4-40 bolts.
+       Are the 4-40 bolts fatter or thinner than the 6-32?
+     2. if you see a bolt described as =4-40x1.25=" how long is it?
+     3. on a =4-40= bolt, how many times does the thread wrap around
+        one inch of the body?
+        4 times?
+        40 times?
+        1. how many times does the thread of a =4-40= bolt wrap around
+           two inches of the body?
+           8 times?
+           40 times?
+           80 times?
+     4. what part of the screw does the screw driver go into?
+**** part placement
+     1. name some reasons for the arduinos placement on the deck.
+        1. could it have been placed diagonally?  why or why not?
+        2. could it have been placed in any other location? why or why not?
+        3. could it be upside-down?  why or why not?
+     2. why are the motors between the wheels?
+     3. why are the motors pointed towards the caster in the back?
+     4. why are the battery packs between the wheels and caster
+        (roughly)?
+     5. where is the breadboard?
+     6. where is the caster?
+     7. why is the caster in the middle of the back, instead of on the
+        left or right?
+     8. should the black chip (motor controller) be on the left or the right
+     9. why should the chip be on the right?
+**** misc.
+     1. should you pick up a battery by the wires coming out of it?
+     2. what are the wires coming out of the battery called?
+     3. what's the difference between stranded and solid core wire?
+     4. why are we using solid core wire for plugging into
+        the breadboard?
+     5. why do we put the glue dots on the side of the battery pack
+        without the on/off switch?
+     6. why do we wrap tape around the body of the motors?
+     7. why do we put a zip tie around the motor?
+     8. do you have a ratcheting socket wrench?
+        what is a ratcheting socket wrench?
+     9. what would happen if there were no caster on the back
+        of the robot?
+     10. what is the robot tread made out of?
+     11. why is it difficult to push the sonar into the sonar holder?
+     12. what would happen if the sonar were easy to push into the sonar
+         holder?