In honor of Force Friday, we teamed up with the engineers over atSphero为您带来两个独家拆分，恰好是Sphero刚发布的Today星球大战玩具，其中包括R2-D2和BB-9E，即将上映的电影中出现的一个全新角色。
作为《星球大战》宇宙中最受欢迎的角色之一，当然不乏针对粉丝和收藏家的R2-D2产品：我们已经看到了垃圾桶，厨房计时器，泡泡机，甚至是这样jet plane。R2-D2玩具范围从静态动作人物到驱动和响应人声命令的机器人。
Sphero工程师对已经在市场上的东西不满意，告诉我们他们想制作有史以来最详细，最现实的R2-D2玩具 - 体现了我们所了解并喜欢这个经典角色的所有基本怪癖。
For this teardown, we’re focusing in on 3 major features of interest:
1.转头- 头部包含一个变速箱进行电动旋转和3个PCBA，以动力R2-D2的光功能。
2.缩回第三腿– just like in the movies, this R2-D2 has a third leg that fully retracts inside the body when he’s standing still and extends when he’s moving about.
3. Locomotion– Sphero’s R2-D2 moves in a very realistic fashion, driving along the ground in tripod mode and also waddling side to side when standing with two legs.
对于我们的新读者，虚构是用于零件制造的制造平台（包括3D printing和CNC machining) and our expertise is around the mechanical side of hardware development. For撕裂, we dig into the mechanical systems and leave the electrical analysis to our EE friends.
转头
The head consists of an outer cover with both painted and assembled decals, an inner “skull”, and a gearbox for the rotating motion.
头部盖和头骨通过牛肉悬臂的快照固定在一起。
颅骨和变速箱的输出通过三个螺钉固定。
头骨在头部周围有3个PCBA。大量的轻墙被整合到头骨中，以防止轻血。
缩回第三腿
Just like in the films, Sphero’s R2-D2 has a third leg that fully retracts inside its body when R2-D2 is standing still, and extends when he’s moving about.
无论如何，这都不是一个小玩具，但是由于此功能，因此身体非常紧。相比之下，电池占用很少的空间。
第三条腿延伸通过凸轮机构驱动by a motor & gearbox. The same motor and gearbox is also responsible for other parts of the locomotion.
The third leg has no mechanism for propulsion; it’s purely for stabilization and emulation of the way R2-D2 drives in the movies. At the bottom of the leg there is a pad made of acetal, which is excellent for low-friction applications.
An acetal pad was selected over wheels/balls, as a larger surface contact allows it to “float” on top of carpet
运动
R2-D2’s two side legs have 3 degrees of freedom: shoulder, ankle, and feet. To drive, R2-D2’s body swings up and forward, its side-legs swing backwards at the shoulders while the feet remain flat on the ground, and the third leg drops.
肩膀和脚踝最终由与第三条腿相同的电动机和变速箱供电。肩膀通过凸轮从内部R2-D2的体内控制，肩关节又通过腿内的巧妙的四杆机构旋转脚踝。
Cams, followers, and gears are made of德林和Hytrel to avoid the need to lubricate the mechanism. These low-friction (more expensive) materials also mitigate noise, which is important for a high-quality feel. Sphero’s R2-D2 is able to waddle from side to side thanks to these mechanisms.
R2-D2 has tracks in both feet so it can drive on different surface types, from hardwood floors to carpets. We regret not testing it on sand before the teardown, but we can always put it back together and take it to Burning Man.
驱动轨道的变速箱与裸露的轨道相当隔离，因此头发和碎屑不会被困在里面。幸运的是，V2将在脚上有微小的真空吸尘器。
Sphero的工程师分享说，该曲目的首次迭代是在McMaster-Carr上购买的，该曲目是原型的，该曲目是原来的。
主要要点
The animation features on this product are really realistic — they wonderfully mimic the way R2-D2 moves in the films. Sphero’s engineers mentioned that it took many cycles of prototyping and testing to achieve this result (how terrible that they had to watch the movies over and over again…).
我们也可以欣赏该产品细节的所有辛勤工作。例如，由于大多数人隐藏在快照面板后面，而且扬声器巧妙地隐藏在前通风口和硬币插槽后面，这自然提供了声音变速箱的插座，因此没有螺钉可见。
It’s also worth noting that many of the body details such as vents, logic displays, and ankle cylinder wedges are all separate components. It would have been easier and less expensive to mold these with the main body panels and paint on the contrasting details, but the features would not be as crisp, and the outcome would not be collectible-quality.
在拆除期间，我被提醒，在电影中，R2-D2经常正在维修（例如，当卢克·天行者（Luke Skywalker）在清洁R2-D2的齿轮中清理沙子时发现了莱亚公主的信息时。也许这是一个巧合，但是Sphero的R2-D2的演绎确实以简单的拆卸为这些场景致敬。我们只需要进行少量的不可逆转的破坏即可取下头部掩护。
Big thanks to the hardware team at Sphero for giving us a first look at this great new product — brb while we try to put him back together like Luke has done so many times!
+我们将根据与该新产品背后的Sphero工程师的独家采访以及该新产品以及新的BB-9E产品, so be sure to subscribe below to get it delivered to your inbox!
