Raspberry Pi speaker, using a shairport
A private cloud service owncloud, can be anywhere, including the use of mobile phones, upload download files, synchronization calendar and so on. This service is relatively slow, is the only one let me buy a new version of Pi reasons.
An alarm clock, the hour will Chime (the first time in the morning is the daughter sh
Raspberry Pi (Raspberry Pi) is produced in the UK. Raspberry Pi is a credit card size computer, and the price is very cheap, there are two models, type A and type B.
A type has 256M memory, a USB interface, no network cable socke
http://wangye.org/blog/archives/845/Recently began to toss up Raspberry Pi came, because somewhere in the internet need Ruijie dialing, so I would like to be able to let my Raspberry Pi do, of course, first of all to transform it into a router, the default comes with the network as a WAN port, we also lack a network po
Enable Raspberry Pi camera without Raspi-config
ask:
HiI have installed the latest Ubuntu Mate on my Raspberry Pi2. I wanted to use the Raspberry Pi camera in this operating system. Although I installed the ' Picamera ' driver in it, the system can not be create the camera
Raspberry Pi Raspberry the GpioRaspberry PI versions hardware schematic diagram: https://www.raspberrypi.org/documentation/hardware/raspberrypi/README.md configuration
Two x 5v,3.3v output ports
IO input/output voltage 0-3.3v
Output PWM Support
Two-way SPI bus
Two-way IIC bus
Serial
With Raspberry Pi, but without an hdmi monitor, this is a pain point, but Raspberry Pi is Raspberry Pi, and his GPIO pin is where we can use our imagination. you can use its GPIO pins to drive a display. GOOGLE, this project has b
The Linux used by the Raspberry Pi is the Debian system, so the Raspberry Pi enable root and Debian are the same. The root account in Debian does not have a default password, but the account is locked. When root privileges are required, the default account is executed via sudo, and the Raspbian in the
The Internet of Things (IoT) and Bitcoin (Bitcoin) are all fun new things today, so what's the point of putting them together? In short, it is the use of Bitcoin networks for secure, autonomous trading of transactions involving computing resources, storage resources, bandwidth, data, and even public displays that can help other devices display content. The middle will involve sensors, IoT short-range communication protocols, cryptographic currencies and block chains, MapReduce and Hadoop, machin
The Linux used by the Raspberry Pi is the Debian system, so the Raspberry Pi enable root and Debian are the same.The root account in Debian does not have a default password, but the account is locked.When root privileges are required, the default account is executed via sudo, and the Raspbian in the
sleep 0.5 play 62 sleep 0.5 play 64 sleep 0.5 play 60 sleep 0.5end
You can enter frere to call this method later. For example, call in a loop:
4.times do frereend
6. Synths (synthesizer)
The synthesizer enables the play method to make different sound effects. The default synthesizer is "pretty_bell", but you can change it by yourself:
"pretty_bell""dull_bell""beep""saw_beep""fm"
Try different synthesizer:
with_synth "fm"2.times do play 60 sleep 0.5 play 62 sleep 0.5end
7. threads
This article is based on the purchase of a East USB wireless network card (Rtl8188cus chip) to make wireless hotspot. Originally wanted to make a one-click script. Just record the implementation process first.
ReferencesTurn Your Raspberry Pi into a WiFi Hotspot with Edimax Nano USB Ew-7811un (Rtl8188cus chipset)Why won ' t DNSMASQ's DHCP server work when using HOSTAPD?
1, update the system, i
Raspberry Pi (Raspberrypi) common image high-speed downloadRaspberry Pi Official website in the domestic open speed is relatively slow, want to download the image may need to wait for a long time, in order to save time to download the image, I here to organize the Raspberry Pi
Use Raspberry Pi to build your own web server (I) install LAMP and raspberry lamp1. Adjust pi GPU memoryOccupiedSize
As a web server, you do not need to output video signals. Therefore, reduce GPU memory usage to maximize pi performance.
1 sudo raspi-config
Select Advan
For many IoT applications, using a Raspberry Pi to build an intelligent gateway is no longer appropriate, but the market of those "XX smart", "XX center" direct seconds kill it!Hardware needs to be extended: SD card, WiFi, Bluetooth, USB hub,tft display.What software is needed: scripting engine, remote login service, Web server, messaging server, processing server, forwarding server, Smart Display software,
So the combination of keywords (Raspberry Pi mysql) asks Baidu to ask Google. No results. Fencing yourself to it. Check MySQL configuration file/etc/mysql/my.cnf found the following configuration# Instead of skip-networking The default is now-listen only on# localhost which are more compatible and are not less secu Re.bind-address = 127.0.0.1Here on everything clear, probably means that the
Raspberry Pi Raspbian and raspberry raspbianRaspberry Pi Raspbian recorded the process of installing Raspberry Pi for the first time and implementing Intranet penetration through peanut shells.
5. Connect to
Raspberry Pi-Sonic Pi (sound programming), sonicpi
Sonic Pi is an open-source programming environment designed to explore and teach programming concepts by creating sound production music processes.
The Code executed by Sonic Pi is based on Ruby, which is a beautiful and con
= g # Top bottom = g # Bottom OpenURL = w # Open Song Home rate = R # Mark like/cancel like next = n # next Song bye = b # no longer play quit = q # exit pause = p # pause loop = L # single Loop mute = m # mute code /li>
Problems encounteredRaspberry Pi Interface cannot display ChineseUsing the command sudo raspi-config, use the SPACEBAR to tick the front with "zh-cn UTF-8" option.Then sudo rebootTo modify the encoding of the SSH client, take Xs
Rc. local file of Raspberry Pi (set startup), raspberry rc. local
To run a command or program when Raspberry Pi is started, you need to add the commandRc. localFile. This is useful when you want to run the program directly without configuring it after
Raspberry Pi 3+ros Kinetic version
Remote PC +ros Indigo version
First turn on the Raspberry Pi camera function
sudo raspi-config
Start Camera function
and restart the Raspberry Pi.
Open the
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