444 |
|
|
445 |
$(f(x+\epsilon) - f(x)) / \epsilon$ |
$(f(x+\epsilon) - f(x)) / \epsilon$ |
446 |
|
|
447 |
|
Even if it is a horrifying thought to LEGO purists, bricks |
448 |
|
can be glued together to obtain an even sturdier structure. |
449 |
|
However, this is seldom necessary. |
450 |
|
|
451 |
Handles |
Handles |
452 |
------- |
------- |
508 |
tips above). |
tips above). |
509 |
Even with careful construction, there will be some (not much) |
Even with careful construction, there will be some (not much) |
510 |
mechanical |
mechanical |
511 |
looseness in the controller; |
looseness in the controller; however, humans *are* used to compensating |
512 |
|
some mechanical looseness. |
513 |
Cons: |
Prototypes built from LEGO bricks are also often |
514 |
|
relatively large compared to what the size of the desired |
515 |
|
controller would ideally be. |
516 |
- gluing parts |
However, we have found that redesigning the controller a few times, |
517 |
|
with some internal peer review helps to reduce the controller |
518 |
- mechanical looseness |
size greatly. |
519 |
|
For knobs or levers with absolute position, our approach does |
520 |
- some inevitable |
unfortunately require calibration; there is no way for the computer |
521 |
|
to know the initial position of the lever. |
|
- humans used to some |
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|
|
- can be alleviated to a great degree by careful construction |
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|
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- see tips |
|
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|
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- relatively big size |
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|
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- size has already reduced and will probably still reduce by new |
|
|
inventions for connecting mouse's optomechanics mouse to handles |
|
522 |
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- requires calibration |
|
523 |
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|
524 |
- having to explain to budget counters purchases of LEGO sets with |
- having to explain to budget counters purchases of LEGO sets with |
525 |
interesting names (or bricklink purchases) |
interesting names (or bricklink purchases) |