| 1 | #+OPTIONS: toc:nil |
| 2 | #+LaTeX_HEADER: \linespread{2.75} |
| 3 | * arduino to deck |
| 4 | these questions are about attaching the arduino to the deck. |
| 5 | you used a drill and drill bit to make holes for bolts to go |
| 6 | through. |
| 7 | we drilled through the arduino into the deck. |
| 8 | 1. what would happen if you used a larger drill bit than the one |
| 9 | you used when drilling holes through the arduino? |
| 10 | 2. why did we use a drill bit that was wider than the body of the |
| 11 | bolt used to hold the arduino? |
| 12 | 3. why do people use drill bits that are smaller or the same size as |
| 13 | existing holes in circuit boards, like the holes in the blue |
| 14 | arduino? |
| 15 | 4. why did we drill through the arduino, rather than marking holes |
| 16 | and using the drill to make holes where the marks were? |
| 17 | 5. how does the drill hold onto the drill bit? |
| 18 | 6. what would happen if the drill bit teeth were not flat on the |
| 19 | drill bit? |
| 20 | 7. how can you break the drill bit when drilling? |
| 21 | 8. should we drill at full speed? |
| 22 | why or why not? |
| 23 | 9. name some reasons for the arduinos placement on the deck. |
| 24 | 1. could it have been placed diagonally? why or why not? |
| 25 | 2. could it have been placed in any other location? why or why not? |
| 26 | 3. could it be upside-down? why or why not? |
| 27 | * motor |
| 28 | these questions are about attaching the motor to the deck. |
| 29 | to attach the motor to the deck, first we attached motor mounts. |
| 30 | the motor mounts are the square things with 6 holes of |
| 31 | various sizes. |
| 32 | 1. the bolts used to attach the arduino are =6-32= bolts. |
| 33 | the bolts used to attach the motor to the motor mount are |
| 34 | =4-40= bolts. |
| 35 | Are the =4-40= bolts fatter or thinner than the =6-32=? |
| 36 | 2. if you see a bolt described as =4-40x1.25"= how long is it? |
| 37 | 3. on a =4-40= bolt, how many times does the thread wrap around |
| 38 | one inch of the body? |
| 39 | 4 times? |
| 40 | 40 times? |
| 41 | 1. how many times does the thread of a =4-40= bolt wrap around |
| 42 | two inches of the body? |
| 43 | 8 times? |
| 44 | 40 times? |
| 45 | 80 times? |
| 46 | 4. what part of the screw does the screw driver go into? |
| 47 | 5. why are the motors between the wheels? |
| 48 | 6. why do we wrap tape around the body of the motors? |
| 49 | 7. why are the motors pointed towards the caster in the back? |
| 50 | 8. why do we put a zip tie around the motor? |
| 51 | * breadboard |
| 52 | the breadboard is the white thing in the middle of the deck. |
| 53 | it has a black thing plugged into it. |
| 54 | almost everything with wires plugs into the breadboard. |
| 55 | 1. where is the breadboard? |
| 56 | 2. what's the difference between stranded and solid core wire? |
| 57 | 3. why are we using solid core wire for plugging into |
| 58 | the breadboard? |
| 59 | 4. do we have the black chip (motor controller) be on the left or |
| 60 | the right of the breadboard? |
| 61 | 5. why should the chip be on the right on our robot? |
| 62 | * batteries |
| 63 | there are two battery packs on the robot. |
| 64 | one of them powers the motors, and is in the clear battery pack. |
| 65 | the black battery pack powers the arduino. |
| 66 | 1. why are the battery packs between the wheels and caster |
| 67 | (roughly)? |
| 68 | 2. should you pick up a battery by the wires coming out of it? |
| 69 | 3. what are the wires coming out of the battery called? |
| 70 | 4. why do we put the glue dots on the side of the battery pack |
| 71 | without the on/off switch? |
| 72 | * caster |
| 73 | the caster is the solid metal sphere. |
| 74 | it is held in a 3d printed plastic housing called the caster standoff. |
| 75 | the standoff is fixed to the deck with 3 nuts and bolts. |
| 76 | 1. where is the caster? |
| 77 | 2. why is the caster in the middle of the back, instead of on the |
| 78 | left or right? |
| 79 | 3. what would happen if there were no caster on the back |
| 80 | of the robot? |
| 81 | * tools |
| 82 | 1. do you have a ratcheting socket wrench? |
| 83 | what is a ratcheting socket wrench? |
| 84 | 2. what is the socket wrench used on? |
| 85 | 3. what are the pliers? |
| 86 | 4. what do you use to remove the colored part from a wire? |
| 87 | * misc |
| 88 | 1. what is the robot tread made out of? |
| 89 | 2. why is it difficult to push the sonar into the sonar holder? |
| 90 | 3. what would happen if the sonar were easy to push into the sonar |
| 91 | holder? |