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1 | * challenge-bot questions |
2 | ** mechanical questions |
3 | *** arduino to deck |
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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. |
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8 | **** drilling |
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9 | 1. what would happen if you used a larger drill bit than the one |
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10 | you used for drilling holes for the arduino? |
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11 | 2. why did we use a drill bit that was wider than the body of the |
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12 | bolt used to hold the arduino? |
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13 | 3. why do people use drill bits that are smaller or the same size as |
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14 | existing holes in circuit boards, like the holes in the blue |
15 | arduino? |
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16 | 4. why did we drill through the arduino, rather than marking holes |
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17 | and using the drill to make holes where the marks were? |
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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 |
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20 | drill bit? |
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21 | 7. how can you break the drill bit when drilling? |
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22 | 8. should we drill at full speed? |
23 | why or why not? |
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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? |