raspberry pi stepper driver

It is estimated that the impact of the typhoon yesterday, the home of the slag route strike, can only link but not the Internet. Originally intended to surf the internet to come back, the results of last night to pick up things when the university bought a face recognition of the Raspberry Pi in the corner to eat ash for a long time, so intends to transform it.Too long did not move the

Raspberry PI board because the cost is not add wireless module, do not want to be bound by the network cable, we need to own a USB wireless module. When buying the board, see the official recommended Edup wireless card, the price is appropriate, directly started.Using REALTEK8188 chip, 802.11n, transmission speed 150Mbps, the applicable range of 130 square meters.Plug it into any U-port, such as:Because the

http://blog.csdn.net/rk2900/article/details/8632713/Raspberry Pi first launch raiders for MACMade by RkThanks to the Zhejiang University "embedded System" course to provide strong support!/************************************************************************/This tutorial connects the MacBook via the serial port, and the notebook side operates the Raspberry

do not drive, simple rough with Raspberry Pi drive USB printerAdmin April 14, 2015 5 Comments Many articles on the web are how to use raspberry sent to do a universal print server, but in many scenarios, the configuration cups what is really their own zuo of the good way to die, all kinds of Linux under the driver con

not long-term reliable, and once they feel no business interest, they can shut down any application or any product on the shelf at any time. In addition, the "Prism Door" event is also a big driver of the Cook's Arkos project, if the NSA can arbitrarily crawl data from Google, Microsoft, Facebook, AOL (US online), Twitter, users are tantamount to "naked" online, and who can believe. Apparently, Cook chose to believe in himself.However, Arkos has pote

Raspberry Pi launches Laboratory equipment:Hardware preparation:实验主板一块（树莓派）；5V/1A电源一个（手机电源）；microUSB线一根；USB-TTL串口线一根（FT232RL芯片或PL2303芯片）。PC一台（Mac OS）；路由器Software Requirements:PC上的USB-TTL串口线配套的驱动程序PC上的串口终端软件：minicomPC上的SSH软件（Mac自带）交叉编译软件 Experimental steps:Hardware preparation:连接串口线：串口线黑线接地，白线接GPIO14，绿线接GPIO15，如下：Power supply supplied by mobile phone power supply下载一个img文件：[https://www.raspberrypi.org/downlo

If you want to use Raspberry Pi as a small server, the performance may be poor, but the stability must be ensured. The following describes how to improve the stability of Raspberry Pi on the network. 1) modify it in/etc/sysctl. confVM. min_free_kbytes(8192 to 16384) # RPI tweaksvm. swappiness = 1 # VM. min_free_kbyt

Linux dual-Nic intranet/Internet settings (Raspberry Pi) Raspberry Pi dual-Nic internet/intranet settings, there are the following methods. 1) use a wired network to connect a PC to a gateway. 2) the other is wired to the intranet and wireless to the Internet. Www.2cto.com, even if there are multiple NICs in the config

Recently in the toss Raspberry Pi, at that time also did not pay attention to, look at the price, bought Mercury network MW150US Ultra-small 150M wireless USB card. But the tragedy was to use iwconfig and not recognize the wireless card But with lsusb words can see MW150US with is Rtl8188eu chip, search on the network, finally found a solution 1. first download the latest Linux kernel for compiling and inst

# Modify the configuration file Raspberry Pi has integrated the I2C driver and only needs to be started. Modify configuration file Sudo nano/etc/modprobe. d/raspi-blacklist.conf ! [Configure] (http://images.cnblogs.com/cnblogs_com/hangxin1940/466697/o_rasp_i2c1.png "comment the third line ")Comment out the third line, CTRL + x save Next, start the I2C modu

1, install the required packagesudo apt-get install Hostpad UHDCPD2. Configuring the/etc/network/interfaces FileConfigure Wlan0 as static addressThe format is as follows:Iface wlan0 inet StaticAddress 192.168.10.1Netmask 255.255.255.0Save, exit3. Configuring the/etc/udhcpd.conf FileSet up automatic assignment of address ranges for DNS gateways, etc.Specific as follows: (according to individual needs to configure)Start 192.168.10.2 # This is the range of IPs that the Hostspot would give to client

This blog will show you how to install three different text-based Web browsers on Raspberry Pi. The original article can be found here or at the bottom of this article. Most Web browsers run a little hard on the small school, or consume a lot of resources, so an alternative solution is to use a web browser based on command line. So far, text-based browsers have not been able to do anything that a common bro

Touch screen buy back for a long time no use, recently found that he is can touch. Tinker a bit.The personal use of Raspberry Pi is the official recommendation system, the version isThe best part of this version is that the kernel has compiled the Egalax touchscreen, and the Apt-get upgrade updates the system to use the touchscreen recently.Calibration of the touch screen is possible, the calibration tool x

Linux-Raspberry Pi system partition There are two main partition commands: fdisk and parted.Both commands require the root permission,First, we will introduce the fdisk command: Fdisk allows you to view the usage of the current file system. fdisk -l Because I installed the system on the SD card, the partition starts with/dev/mmcblk0. We can see that there are currently three actual partitions (/dev/mmcblk

that the appropriate content is modified according to the actual situation: [Unit] Description=wireless Static IP Connectivity Wants=network.target Before=network.target [Service] Type=oneshot Remainafterexit=yes Environmentfile=/etc/conf.d/wifi EXECSTART=/SBIN/IP Link Set Dev wlan0 up EXECSTART=/SBIN/IP addr Add 192.168.34.1/24 broadcast 192.168.34.255 Dev Wlan0 EXECSTOP=/SBIN/IP addr Flush Dev Wlan0 EXECSTOP=/SBIN/IP Link Set Dev

1. Identify the internet cardWith the command LSUSB, you can continue down if you can identify it.2. Install the NIC driverThe Internet card will usually have 2 functions, one is a virtual CD-ROM, used to install the driver, and the other is a network connection modem.Under Linux, it is necessary to install the Usb-modeswitch driver to correctly identify and start the modem function of the NIC.sudo apt-get

Raspberry Pi native Serial port default for console output, if you want to use in your own program need to shut down the system to occupy this serial port. The method is configured for Rasp-config, or directly modifies the/boot/cmdline.txt #dwc_otg. lpm_enable=0 console=tty1 console=serial0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator= Deadline Fsck.repair=yes Rootwai Dwc_otg.lpm_enable=0 console=tty

A few days ago, the raspberry Pie 2 of the kernel compile run work, these days focused on the raspberry Pie Gpio operation, then it is time to get it out We know that the gpio operation is driven by the basic operation, then the study of a board, a version of the kernel, the first to start with the Gpio. The underlying GPIO operation has the following: Ioremap maps The register address, Readl reads the val