光线传感器 模拟传感器 互动媒体 新推出的 light seor 是基于半导体的光电效应原理所开发的光线传感器，其可用来对周围环境光的强度进行检测，结合各种单片机 控制器 可实现光的测量、光的控制和光电转换等功能，此传感器3p插针接口，可通过 3p传感器连接线 （不分模拟与数字连接线）与 传感器扩展板 结合使用，可以制作光感相关的互动作品。 what is a photocell? photocells are seo that allow you to detect light. they are small, inexpeive, low-power, easy to use and don't wear out. for that reason they often appear in toys, gadgets and appliances. theys are are often referred to as cds cells (they are made of cadmium-sulfide), light-dependent resisto (ldr), and photoresisto. photocells are basically a resistor that changes its resistive value (in ohms ω) depending on how much light is shining onto the squiggly face. they are very low cost, easy to get in many sizes and specificatio, but are very innacurate. each photocell seor will act a little differently than the other, even if they are from the same batch. the variatio can be really large, 50% or higher! for this reason, they shouldn't be used to try to determine precise light levels in lux or millicandela. itead, you can expect to only be able to determine basic light changes for most light-sentsitive applicatio like /is it light or dark out/, /is there something in front of the seor (that would block light)/, /is there something interrupting a laser beam/ (break-beam seo), or /which of multiple seo has the most light hitting it/, photocells can be a good choice! 相关博文： robotbase的博客——光敏电阻的原理及应用（复制链接到浏览器打开） http:blog.cblog_5e3f971b0100ffhl.html 相关视频： 2wd轻量型移动机器人追光功能演示视频（复制链接到浏览器打开） http:v./v_show/id_xmja5mjg1ntuy.html 4wd轻量型移动机器人追光功能演示视频（复制链接到浏览器打开） http:v./v_show/id_xmjm1nde5mjm2.html 本产品的加工定制是是，品牌是robotbase，型号是rb-02s023，种类是光电，制作工艺是集成，输出信号是数字型，货号是rb-02s023