* 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.
- 0. [@0] 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?
- 1. why do people use drill bits that are smaller or the same size as
- existing holes in circuit boards, like the blue arduino?
- 2. why did we use a drill bit that was wider than the body of the
- bolt used to hold the arduino?
- 3. why did we drill through the arduino, rather than marking holes
- and using the drill to make holes where the marks were?
+ 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?
projects / challenge-bot / blobdiff