| 1 | * challenge-bot questions |
| 2 | ** mechanical questions |
| 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 | **** drilling |
| 9 | 1. what would happen if you used a larger drill bit than the one |
| 10 | you used for drilling holes for the arduino? |
| 11 | 2. why did we use a drill bit that was wider than the body of the |
| 12 | bolt used to hold the arduino? |
| 13 | 3. why do people use drill bits that are smaller or the same size as |
| 14 | existing holes in circuit boards, like the holes in the blue |
| 15 | arduino? |
| 16 | 4. why did we drill through the arduino, rather than marking holes |
| 17 | and using the drill to make holes where the marks were? |
| 18 | 5. how does the drill hold onto the drill bit? |
| 19 | 6. what would happen if the drill bit teeth were not flat on the |
| 20 | drill bit? |
| 21 | 7. how can you break the drill bit when drilling? |
| 22 | 8. should we drill at full speed? |
| 23 | why or why not? |
| 24 | **** bolts |
| 25 | 1. the bolts used to attach the arduino are 6-32 bolts. |
| 26 | the bolts used to attach the motor to the motor mount are |
| 27 | 4-40 bolts. |
| 28 | Are the 4-40 bolts fatter or thinner than the 6-32? |
| 29 | 2. if you see a bolt described as =4-40x1.25=" how long is it? |
| 30 | 3. on a =4-40= bolt, how many times does the thread wrap around |
| 31 | one inch of the body? |
| 32 | 4 times? |
| 33 | 40 times? |
| 34 | 1. how many times does the thread of a =4-40= bolt wrap around |
| 35 | two inches of the body? |
| 36 | 8 times? |
| 37 | 40 times? |
| 38 | 80 times? |
| 39 | 4. what part of the screw does the screw driver go into? |
| 40 | **** part placement |
| 41 | 1. name some reasons for the arduinos placement on the deck. |
| 42 | 1. could it have been placed diagonally? why or why not? |
| 43 | 2. could it have been placed in any other location? why or why not? |
| 44 | 3. could it be upside-down? why or why not? |
| 45 | 2. why are the motors between the wheels? |
| 46 | 3. why are the motors pointed towards the caster in the back? |
| 47 | 4. why are the battery packs between the wheels and caster |
| 48 | (roughly)? |
| 49 | 5. where is the breadboard? |
| 50 | 6. where is the caster? |
| 51 | 7. why is the caster in the middle of the back, instead of on the |
| 52 | left or right? |
| 53 | 8. should the black chip (motor controller) be on the left or the right |
| 54 | 9. why should the chip be on the right? |
| 55 | **** misc. |
| 56 | 1. should you pick up a battery by the wires coming out of it? |
| 57 | 2. what are the wires coming out of the battery called? |
| 58 | 3. what's the difference between stranded and solid core wire? |
| 59 | 4. why are we using solid core wire for plugging into |
| 60 | the breadboard? |
| 61 | 5. why do we put the glue dots on the side of the battery pack |
| 62 | without the on/off switch? |
| 63 | 6. why do we wrap tape around the body of the motors? |
| 64 | 7. why do we put a zip tie around the motor? |
| 65 | 8. do you have a ratcheting socket wrench? |
| 66 | what is a ratcheting socket wrench? |
| 67 | 9. what would happen if there were no caster on the back |
| 68 | of the robot? |
| 69 | 10. what is the robot tread made out of? |
| 70 | 11. why is it difficult to push the sonar into the sonar holder? |
| 71 | 12. what would happen if the sonar were easy to push into the sonar |
| 72 | holder? |