http://www.faludi.com/bwsn/xbee-level-shifting/

The XBee communication (RX/TX) pins definitely operate off of a 5V signal with the Arduino. We’ve seen this a lot and done this a lot, and it certainly keeps things simple. That said, there’s nothing wrong with adding a level-shifting circuit to deliver 3.3 V signals to the XBee and 5 V signals to a microcontroller.  Definitely a good idea for commercial applications where you will need to keep the module stable across its entire temperature range, etc.

Level shifting can be accomplished with:

  • a resistor-based voltage divider: This will work but will also slow down signal rise and fall times significantly. For most cases this won’t be a problem, but it might affect the integrity of fast signals over long wires.
  • a Zener circuit (with a resistor for level-shift): This is better but the part isn’t one most people have lying around, and it’s not stocked say, at Radio Shack
  • a diode circuit:  The two in the schematic below use easily available parts and the diodes can be any common silicon rectifier type

XBee Level Shifting的更多相关文章

  1. Level shifting a +/- 2.5V signal to 0 - 5V

    Google : Op-Amp Level Shifter Level shifting a +/- 2.5V signal to 0 - 5V I have a front end module t ...

  2. AD8275 Driver Amplifiers For Analog-To-Digital Converters

    Driver Amplifiers For Analog-To-Digital Converters What amplifiers are used to drive analog-to-digit ...

  3. Freescale OSBDM JM60仿真器

    OSBDM-JM60 - 9S08JM60 Based OSBDM — It includes interfaces and firmware applied to all the targets s ...

  4. JTAG Communications model

    https://en.wikipedia.org/wiki/Joint_Test_Action_Group In JTAG, devices expose one or more test acces ...

  5. Freescale OSBDM JM60仿真器 BGND Interface

    The BGND interface provides the standard 6 pin connection for the single wire BGND signal type devel ...

  6. Buck converter uses low-side PWM IC

    The most common switching-power topology is a buck converter, which efficiently transforms high volt ...

  7. Non-Inverting Level Shifter : +/-5V signal into a 0 to 3.3V

    http://electronicdesign.com/boards/non-inverting-level-shifter-requires-only-one-op-amp-one-supply-v ...

  8. Java compiler level does not match解决方法

    从别的地方导入一个项目的时候,经常会遇到eclipse/Myeclipse报Description  Resource Path Location Type Java compiler level d ...

  9. Android requires compiler compliance level 5.0 or 6.0. Found '1.4' instead的解决办法

    今天在导入工程进Eclipse的时候竟然出错了,控制台输出的是: [2013-02-04 22:17:13 - takepicture] Android requires compiler compl ...

随机推荐

  1. Python匿名函数详解

    python 使用 lambda 来创建匿名函数. lambda这个名称来自于LISP,而LISP则是从lambda calculus(一种符号逻辑形式)取这个名称的. 在Python中,lambda ...

  2. Java线程的阻塞

    线程的阻塞 线程的优先级 线程总是存在优先级,优先级范围在1~10之间,线程默认优先级是5(数值越大优先级越高): JVM线程调度程序是基于优先级的抢先调度机制: 在大多数情况下,当前运行的线程优先级 ...

  3. 安卓ios各版本及分辨率占比

    Google Play 安装统计数据 只有安卓的 https://developer.android.com/about/dashboards/index.html?hl=zh-cn 腾讯移动分析 安 ...

  4. java基础46 IO流技术(输出字符流/缓冲输出字符流)

    一.输出字符流 1.1.输出字符流体系 --------| Writer:输出字符流的基类(抽象类)  ----------| FileWriter:向文件输出数据输出字符流(把程序中的数据写到硬盘中 ...

  5. redis tutorail

    命令 set     get    incr expire  秒  ttl    -1 不会过期 list  : lpush  rpush  lpop  rpop   lrange   llen se ...

  6. js中的call,apply,bind区别

    在JavaScript中,call.apply和bind是Function对象自带的三个方法,这三个方法的主要作用是改变函数中的this指向. call.apply.bind方法的共同点和区别:app ...

  7. drools7 (三、kmodule 介绍)

    注意几点: 1. kmodule 有默认的加载路径, 看  KieModuleModelImpl 这个类的源代码 public class KieModuleModelImpl implements ...

  8. Rookey.Frame之实体表单验证

    昨天给大家介绍了实体FluentValidation验证,今天继续给大家介绍表单验证,在Rookey.Frame框架中,表单验证有PrimaryKeyFields字段验证.唯一验证.必填验证.常用验证 ...

  9. Django实战(5):引入bootstrap,设置静态资源

    之前生成了Product类的scaffold,但是如同rails的开发者David所讲的那样,scaffold几乎没什么用.所以按照<Agile Web Development with Rai ...

  10. 手工释放linux内存------/proc/sys/vm/drop_cache

    当在Linux下频繁存取文件后,物理内存会很快被用光,当程序结束后,内存不会被正常释放,而是一直作为caching.这个问题,貌似有不少人在问,不过都没有看到有什么很好解决的办法.那么我来谈谈这个问题 ...