Edi Wang

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How to use Windows RDP to connect Raspbian Linux

Because Windows 10 IoT Core is not yet ready to replace Raspbian, in some case, we have to use Linux. The remote operation on Linux is usually done by SSH. If you want remote desktop like the one on Windows. There are two options: tightvnc or xrdp. I used to  use tightvnc, it does not have any problem with daily use. But I have to install a tightvnc client on my PC. However, XRDP can be supported...

IoT Raspberry Pi Raspbian Linux xrdp

Windows 10 IoT: How to Drive an SSD1306 I2C Display

I bought a 128x64 0.96 inch OLED display, like this one: The driver chip for this screen is called SSD 1306, typically, this chip will have 2 layouts, SPI or I2C. However, the examples fo how to drive I2C with SSD 1306 is very rare, and they run on Raspbian not Windows. Luckly, with the help from a Microsoft Staff in US, we finally got the code to run the screen on Windows 10 IoT Core. 1. Phys...

IoT Raspberry Pi SSD 1306 I2C

Raspberry Pi 3 and Windows 10 IoT Core Basics

最近有时间,总结了一下关于树莓派3及Windows 10 IoT的基础知识。适合没有接触过硬件但有一定编程经验的读者入门。我自己刚刚买树莓派的时候花了很长时间入门,搞清楚各种概念和属于。很多网上的帖子都是分散在各个角落的,并且是英文的,有些还是过时的,有些是爆的,所以我觉得有必要总结一篇基础入门帖子。这篇文章讲的都是抛砖引玉的概念,并不包括End-To-End的Case,想要做一个完整实验的文章,请看我博客的物联网开发系列文章:http://edi.wang/category/list/iot  如果有错误和补充,欢迎在评论里指出。 一、树莓派3 树莓派是基于ARM芯片的卡片电脑,大小和一张信用卡一样。今年推出了第三代,集成了板载蓝牙和WIFI。之前的树莓派1和2都是需要用USB WIFI和蓝牙实现的,所以你要是购买树莓派,买3是最方便的,可以省去USB WIFI和蓝牙的配件。并且W...

IoT Raspberry Pi

315MHz Remote Door Control by Windows 10 IoT

这几天我用树莓派实现了一个模仿车库遥控门的设备,分享给大家。(优酷视频 http://v.youku.com/v_show/id_XMTU3ODk1NDY2OA==.html )   一、遥控模块 首先介绍一下我用的遥控器和接收板,这种遥控模块在中国随处可以买到,基本都是长这样的。很多卷帘门、车库门都是用这种遥控模块的。做无线电实验购买的是非锁的版本,注意最好同时购买天线。天线用的是50欧姆单芯导线,其实就是个铜丝,注意购买时候要看好频率,中国大陆的无线电许可频率是315MHz,国外也有用443MHz的,我买的遥控器是315MHz。注意遥控器发射频率和接收频率要匹配就行。遥控接收端芯片是PT2272-M4,M4的意思是点动模式,即按住遥控器按钮输出高电平,松开停止输出。遥控板的ANT端焊接天线,方向要是竖直向上的(相对你的设备)。 遥控板的接口有7个: 接口...

Windows 10 IoT Raspberry Pi

Reed Controlled Light by Windows 10 IoT Core

Reed switch is an electronic component to connect / disconnect the switch by magnetic field. When it touchs magnetic field, the two iron sheets inside the tube will clip together, so the switch is connected.  The application of Reed Swith: Door light controller: When you open the door, turn the light on. When you close the door, turn off the light. This is simply install a reed switch on your do...

Windows 10 IoT Raspberry Pi

74HC595 4 Digits LED Tube with Windows 10

One of the common used LED Tube driver chip is 74HC595, by using the Chip, you can save GPIO ports. I bought a LED Tube with 595 chip, it only need 3 GPIO ports to display 4 digits. However there is no existing posts about how to drive the 74HC595 LED Tube from Windows 10. So I can only try for myself. 1. Physical Connection VCC to DC3.3 power, GND to Ground, DIO to GPIO27 (you can change it, an...

Windows 10 IoT Raspberry Pi

Azure Fire Alarm by Raspberry Pi and Windows 10 IoT Core

防火是日常生活中非常重要的意识,如果你是一只恩爱狗,出门在外,家里被FFF团点了,那真是太惨(hao)了。如果你恰好有Windows 10的设备,比如Lumia,Surface,能及时收到火警是至(mei)关(sha)重(luan)要(yong)的。今天就教大家如何用Microsoft Azure公有云+Windows 10 IoT Core在树莓派上实现一个远程火警系统。 阅读这篇文章,你需要的前置知识: Windows 10,UWP的基本开发能力 MVVM基础知识 ASP.NET MVC的基础知识 树莓派、GPIO及逻辑电路的基本知识(也就是大学里的计算机电路) Azure公有云的使用经验 ……当然,还要有对微软的信仰 一、设计原理 基本想法是,通过火焰传感器的输入信号,触发一个警报,把消息发送到Azure上的Notification Hub,这个服务是专门给Wind...

Azure Windows 10 IoT Raspberry Pi

Azure Remote Controlled Light with Windows 10 IoT Core

For those who have watched the "Big Bang Theory", you would probably remember that those physicists build an Internet controlled lamp. The signal send from their laptop traveled around the world and come back to their house to light up the lamp. Now, with Windows 10 IoT Core and Microsoft Azure, we could also achieve the same thing on a Raspberry Pi 3. First, I strongly recommend you to read thes...

Azure Windows 10 IoT Raspberry Pi

Using stepper motor in Windows 10 IoT Core

如果你需要精确控制设备的转动角度,普通电机是做不到的,通常我们会选用步进马达。比如28BYJ-48这个型号的,很容易买到。 步进马达得配合驱动板使用,最常用的是ULN2003芯片的驱动板,就像下图。不过注意,你买到的驱动板长相可能不太一样,不过没关系,只要芯片上写的是ULN2003,就可以使用,它们的接口都是一样的。关于步进马达的原理,可以看这篇: https://en.wikipedia.org/wiki/Stepper_motor  拿到驱动板和步进马达后,将马达插入驱动板的白色插槽中,这个接口有防呆设计,所以不会插反。 关于Windows 10 IoT如何驱动步进马达,有一篇很好的英文材料: https://www.hackster.io/erickbp/stepper-motor-and-windows-10-iot-core-d3c5d6 我的例子就是基于上面这...

Windows 10 IoT Raspberry Pi

Sound Controlled Light by Windows 10 IoT Core

In many buildings, there are sound controlled light in use. When you clap your hands, the light turns on. Now, with Raspberry Pi 3 and Windows 10 IoT, we can make a sound controlled light ourselves. The sound sensor I use is FC-04. As other sensors, the first step is calibration. 1. Calibration for FC-04 Sound Sensor In quiet environment. Connect VCC to DC 3.3V,GND to Ground. At that time, the...

Windows 10 UWP IoT Raspberry Pi