/[gzz]/manuscripts/Control1/poster.rst
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revision 1.40 by mudyc, Mon May 5 18:13:14 2003 UTC revision 1.41 by tjl, Mon May 5 18:14:18 2003 UTC
# Line 160  the optomechanical mice. Line 160  the optomechanical mice.
160     In optomechanical mice, the motion of the axles is detected     In optomechanical mice, the motion of the axles is detected
161     by the IR light gate whose beam is cut by the slitted disk.     by the IR light gate whose beam is cut by the slitted disk.
162    
163  Figures [ref-figrequired]_ - [ref-figoptomechanism] explain  Figures [ref-figrequired]_ - [ref-figoptomechanism]_ explain
164  the internal mechanism of optomechanical mice,  the internal mechanism of optomechanical mice,
165    
166  Our first solutions involved replacing the slitted disks  Our first solutions involved replacing the slitted disks
# Line 178  affected: the gate missed a large fracti Line 178  affected: the gate missed a large fracti
178     :width: 7.5cm     :width: 7.5cm
179     :label: figwheelmechanism1     :label: figwheelmechanism1
180    
181     The principle behing the current version of     The principle behind the current version of
182     our interface between the optomechanical mouse and     our interface between the optomechanical mouse and
183     LEGO pieces: driving the mouse axles by a rubber LEGO tyre.     LEGO pieces: driving the mouse axles by a rubber LEGO tyre.
184     A smooth tyre (Bricklink part no 132-old)     A smooth tyre (Bricklink part no 132-old)
# Line 187  affected: the gate missed a large fracti Line 187  affected: the gate missed a large fracti
187    
188  The third and so far final solution is to use the mouse's own  The third and so far final solution is to use the mouse's own
189  mechanism, simply driving it using a LEGO rubber tyre  mechanism, simply driving it using a LEGO rubber tyre
190  (Fig. [ref-figwheelmechanism1]).  (Fig. [ref-figwheelmechanism1]_).
191  In order to drive the mouse axle properly, a small  In order to drive the mouse axle properly, a small
192  amount of pressure  amount of pressure
193  needs to be applied to the wheel; this is provided by a rubber  needs to be applied to the wheel; this is provided by a rubber
194  band through a small  band through a small
195  LEGO mechanism shown in Figs. [ref-figpressmechparts] -  LEGO mechanism shown in Figs. [ref-figpressmechparts]_ -
196  [ref-figpressmechanism1].  [ref-figpressmechanism1]_.
197    
198  .. figure:: pressmechparts.jpg  .. figure:: pressmechparts.jpg
199     :width: 7.5cm     :width: 7.5cm
# Line 258  by preserving its position Line 258  by preserving its position
258  Practical tips  Practical tips
259  ==============  ==============
260    
261    Mechanics
262    ---------
263    
264  The two most difficult goals to achieve are  The two most difficult goals to achieve are
265  avoiding mechanical looseness and  avoiding mechanical looseness and
266  obtaining a rugged structure.  obtaining a rugged structure.
# Line 310  the following design rules: Line 313  the following design rules:
313        
314    )    )
315    
316    Handles
317    -------
318    
319  For handles,  For handles,
320    
321  - shape edged, uncomfortable  - shape edged, uncomfortable
322    
323  - several options for design  - several options for design
# Line 321  For handles, Line 328  For handles,
328    
329      - wedges      - wedges
330    
331  - more ergonomic handles could be made by covering  .. figure:: octagonal.jpg
332    LEGO handles with modelling "pasta" / paste / something     :width: 7.5cm
333       :label: octagonal
334    
335       A rugged and relatively comfortable octagonal
336       handle built from slopes and inverted slopes.
337    
338    
339    More ergonomic handles can also be made by covering
340    LEGO bricks with air-hardening
341    modelling paste, as in [ref-figpaste1].
342    
343    .. figure:: paste1.jpg
344       :width: 7.5cm
345       :label: figpaste1
346    
347       An ergonomic handle implemented using
348       air-hardening modelling paste. The handle was
349       molded directly to the left hand of one of our research
350       group's members.
351    
352    
353    
354  Conclusion  Conclusion

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