为了纪念周五的武力，我们与工程师合作Spheroto bring you two exclusive teardowns of Sphero’s Star Wars toys,R2-D2和BB-9E。
When we first unboxed the little black droid called BB-9E, we thought to ourselves, “Is that an evil BB-8?” There’s no mistaking which side this mysterious new character plays on–even its conical head is reminiscent of Darth Vader’s helmet!
BB-9E具有与Sphero原始BB-8相同的许多功能，因此请务必检查一下拆卸，以更深入地分解体内的组件。快速查看新机器人（请原谅我们的驾驶技巧不佳）：
对于这种拆除，我们重点关注2个主要感兴趣的特征：
1. Lights in the head- BB-9E的头部具有发光的红灯和两个小的蓝色灯，无线电动带有感应线圈
2. Weight Compensation– BB-9E’s head is heavier than BB-8 because of the new light features, and as such requires counterweights for balance
为了our new readers,虚构is a manufacturing platform for part fabrication (including3D printing和CNC加工）和我们的专业知识在硬件开发的机械方面。为了teardowns，我们深入研究机械系统，并将电气分析留给我们的EE朋友。
Lights in the Head
The biggest upgrade BB-9E received is a glowing red cyclop eye and two accompanying blue lights. In comparison, BB-8’s head was just a plastic shell containing magnets.
结果，必须对头部进行完全重新设计以适应light guide和a PCBA.
There are only 2 LEDs on the PCBA: one red and one blue. The LEDs are placed fairly close together, and they make use of a single light guide. To keep the colors distinct, the head bottom enclosure incorporates a light wall.
BB-9E’s head is magnetically attached to its body. How on earth is power transmitted without any physical connection? Keep reading…
As it turns out, the bottom half of the head contains a secret: copper windings.
头部的灯光是电感的。在头部，我们有接收器线圈，一旦我们打开身体，我们就会发现发射器线圈。
Transmitting power through a moving interface is no easy feat — we’re not aware of any other applications of this clever technology. Lots of kudos for Sphero’s innovative engineers!
体重补偿
由于电感线圈的存在，与BB-8相比，BB-9E更高。
To compensate for this, a cast zinc counterweight has been added to to the bottom of the body internal assembly.
To compensate for this, a cast zinc counterweight has been added to to the bottom of the body internal assembly.
BB-9E is 24.5 grams heavier than BB-8 as a result of this change. BB-9E’s head is 1 gram heavier, while its body is 23.5 grams heavier!
Main Takeaways
We love that Sphero’s original robot platform is so versatile: The launch of BB-8 and BB-9E are brilliant ways to leverage Sphero 2.0’s foundation.
尽管Sphero团队本来可以制作一个新的塑料和磁铁头并应用了新的贴花工作来制作BB-9E，但他们采取了添加灯光以使事情变得有趣的更艰难的途径。作为创意工程师，他们实际上想添加更多功能，而不仅仅是灯光，但这是用硬期限的产品发行的本质（在即将到来的Sphero工程师的即将发表的文章中详细介绍）。
非常感谢这款出色的新产品背后的硬件团队，这使我们首先要与虚构社区分享。确保退房our teardown of Sphero’s R2D2toy and ourexclusive interview with Sphero’s engineers。
