10
JUN
Microsoft MVP for Azure
All Posts
29
APR
74HC595 4 Digits LED Tube with Windows 10
One of the commonly used LED Tube driver chip is 74HC595, by using the Chip, you can save GPIO ports. I bought an LED Tube with 595 chip, it only needs 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. …
03
APR
Using stepper motor in Windows 10 IoT Core
If you need to precisely control the rotation angle of the equipment, ordinary motors can't do it, usually we use stepper motors. For example, the 28BYJ-48 model is easy to buy. The stepper motor has to be used with the driver board, and the most commonly used is the driver board ULN2003 the chip, as shown in the figure below. However, note that the driver board you buy may not look the same, but it doesn't matter, as long as the chip is written on the ULN2003, you can use it, and their interfaces are the same.
02
APR
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 …
02
APR
Windows 10 IoT: Detect Range with HC-04 Ultrasonic Sensor on Raspberry Pi 3
HC-04是树莓派上用的比较广泛的超声波传感器，可以用来测量设备和物体之间的距离。可惜网上的资料很少有针对Windows 10的，几乎都是Python和C在Linux上的例子。 hackster.io上有一篇用HC-04做雷达的例子，但是设计的部件太多了，对单纯学习HC-04传感器的使用来说这个例子比较复杂。搜了一圈，英文资料最好的是这篇：http://www.guruumeditation.net/en/digital-io-with-windows-10-iot-raspberry-pi-2-and-the-ultrasonic-ranging-module-hc-sr04/ 国内中文资料介绍Windows 10上HC-04传感器的文章似乎还没有，所以就简单总结一下步骤。 一、物理连接 对于没有多少物理和电子知识基础的人（比如我）来说，第一步连线是比较难的。很多文章都一笔带过说“这很 …
28
MAR
Windows 10 IoT Development: Moisture Sensor for Raspberry Pi 3
I bought a moisture sensor like this recently. After some research, there seem no articles to indicate how to use it in Windows 10. So I figured out myself. This sensor has 4 Pins, which are: PIN Usage AO Analog Out DO Digital Out GND Ground VCC Power So, let's connect VCC to DC3.3v on RPi, I use PIN 01. Connect GND to any ground header, which I use …
26
MAR
GY-30 (BH1750FVI) Light Sensor with Windows 10 IoT
I purchased a GY-30 light sensor recently, this model is also known as "BH1550FVI". There seems no sample for this sensor on Windows 10 yet, so I tried to make one. The light sensor looks like this: My board is a Raspberry Pi 3, the GPIO layout is shown in this table: Because GY-30 is an I2C device, so we can not use GPIO to drive it directly, we must use the I2C ports. In addition, …
24
MAR
Windows 10 IoT开发：UWP应用调用关机和重启命令
UWP通常是没有让设备关机和重启的权限的。但是在Windows 10 IoT Core中是有办法实现的。安装Windows 10 Iot Core之后默认启动的那个欢迎页面右上角是有关机和重启按钮的。其实就是个UWP，它的源代码在：https://github.com/ms-iot/samples/tree/develop/IoTCoreDefaultApp 分析源代码可以发现，关机和重启是通过ShutDownManager这个class实现的。 #region Assembly Windows.System.SystemManagementContract, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null, ContentType=WindowsRuntime // C:\Program Files (x86)\ …
09
MAR
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 …
18
FEB