raspberry pi spi pins

Raspberry Pi advanced GPIO library, wiringpi2 for python Use note (3) GPIO operations, gpiowiringpi2 The core function of the GPIO library is to operate GPIO. GPIO is the "general input/output" interface, such as lighting up an LED or relay, or using iic spi 1-wire and other protocols, reading and writing data are all useful for GPIO. It can be said that without

audio use the same interface, possibly between many people want to use the Raspberry Pi hardware PWM reason, So flexible design so that everyone has more freedom to use the space. Readme text for audio and PWM: He Overlay and Parameter Reference =================================== N.B. When editing this file, please preserve the indentation levels to make it simple to parse Programmatic

For students to do a smart home tutorial: The use of Raspberry Pi as a server, we through the method of accessing the server, control the high and low level of the I/O port of the Raspberry Pi, I/O port connected on the relay (to achieve low voltage control high voltage), relay you can be arbitrarily connected to the h

Linux+raspberry Pi+python* * For students to do a smart home tutorial:Using Raspberry Pi As a server, we have access to the server method, control the Raspberry Pi I/O port high and low level, I/O port on the relay (to achieve low

follow this lesson, you need the following devices or software: Hardware section Raspberry Pi Adafruit Control Cable The logic level of this cable is 3.3V so it is safe, but not all kinds of cables are 3.3v! Only use the Adafruit control cable in this tutorial to avoid damaging the gpio pins on the small faction. Software Installation (MAC) OSX has its own ter

device I'm picking up is a sensor, not a character device, so I need to convert it. Similarly, the annotated Inwaiting () and Flushinput () functions are for character input, and I have not tested them on my machine, because sensor will keep on reporting data, simply read it.Another important aspect of hardware connectivity: The tx of the Raspberry Pi to be connected from the Rx of the device, the Rx of th

Gpio Library core function, of course, is the operation of Gpio, Gpio is the "general input/Output" interface, such as lighting a LED, relays, or through the IIC SPI 1-wire and other protocols, read, write data, this is the use of Gpio, can say no gpio, Raspberry Pi can only be used as a small computer, with a gpio, it is upgraded to a controller. First of all, h

please refer to the other blog post for the circuit connection method: "Color control for RGB LEDs with Raspberry Pi--c language version"Python code:#!/usr/bin/env python#********************************************************* #File Name:rgb.py#author:jason Dai #Date: 2015/02/04#*********************************************************import Rpi.gpio as GPIOimport timecolors = [0xFF0000, 0x00FF00, 0x0000

Yesterday made the control led, played the first, the rest of the feeling is very simple, here recordJust a couple of photos.Play the honey module only to find the law, generally this module, there will be three pins, VCC (3.3V or 5V power supply output PIN), GNC (for Gpio pin of GNC), out/(I/O) (corresponding to the gpio number of pins), if it is necessary to send information to the

, running at 700Mhz, core frequency 250Mhz, Memory frequency 400Mhz, no increase in voltageModest moderate overclocking, running at 800Mhz, core frequency 250Mhz, Memory frequency 400Mhz, no increase in voltageMedium Medium overclocking, running at 900Mhz, core frequency 250Mhz, memory frequency 450Mhz, increased voltage 2High-height overclocking, running at 950Mhz, core frequency 250Mhz, memory frequency 450Mhz, increased voltage 6Turbo Ultimate Overclocking, running at 1000Mhz, core frequency

Raspberry PI Series--bare metal illuminated LED lightsBackgroundRecently just bought Raspberry PI B +, configured to run the official Raspbian system, tossing a week Linux system, feel no meaning, so try to understand the bottom of the start process, through a few days of research, It is found that the boot of the lowe

Reference: http://programmingadvent.blogspot.hk/2012/12/raspberry-pi-uart-with-pyserial.htmlRaspberry Pi UART with pyserial os:occidentalis v0.2Hardware:raspberry Pi Revision B with CobblerSetup:serial Loopback (Connect RX and TX pins on GPIO

Title:raspberry PI Model B + (LCD display CPU temperature)--2015-01-29 17:44Bought a block connected to the raspberry PI Model B + LCD display, the above does not write CPU temperature, processing the next.Modified PCD8544_RPI.C:/*================================================================================= NAME:PCD8544_RPI.C Version : 0.1 Copyright (C) by An

Raspberry Pi advanced GPIO library, wiringpi2 for python using notes (4) practice DHT11 decoding, gpiodht11 DHT11 is a temperature and humidity sensor with calibrated digital signal output. Precision humidity +-5% RH, temperature +-2 ℃, range humidity 20-90% RH, temperature 0 ~ 50 deg C. The encapsulated modules I bought contain the pull-up resistor. After checking the

Javame embedded 3.3 released, supporting Raspberry Pi Author: chszs, reprinted with note. Blog homepage: http://blog.csdn.net/chszs Oracle recently released two javame versions: First, javame embedded 3.3 for Raspberry Pi (Ea version );The second is javame SDK 3.3 (EA ). Developers can now develop rich javame app

The simplest of a Raspberry Pi Gpio operation Getting started, here is a record of the followingFirst on the connection diagram:Horizontal slots. Figure Akzent The BigUsing the Gpio gnd and #18 pins, this is not, the red wire is 18 pins, the dark line is the GND pin, the following Python code:1 #Coding:utf-82 ImportGpi

the digital tube. The correspondence depends on the order in which you send the data when you wire and write the code. DS is a serial input pin, so-called serial is to make the data on a signal line in order to transmit one by one, like a string of candied fruit. This pin we received from the Raspberry Pi at any one of the Gpio ports (output mode). The SHCP is the clock pin for the shift regist

How to enable I2C device http://www.cnblogs.com/hangxin1940/archive/2013/04/02/2997077.html and build a python I2C Development Environment http://www.cnblogs.com/hangxin1940/archive/2013/04/03/2997094.html Quick2wire is a python library used for I2C communication on Raspberry Pi. It allows non-root users to read and write gpio pins conveniently. Why use it? Some

First, the previous figure: Accessories used: 1. Main Character: Raspberry Pi 2. secondary role: Infrared Detection 3. Miscellaneous: bread, DuPont wire, buzzer, led, resistor The infrared detection has three pins. The power supply at both ends and the signal output in the middle directly connect the signal to a gpio of

FileZilla on Windows to make an SFTP connection with the connection address starting with sftp://. You can no longer use stand-alone displays and keyboards."Timed Shutdown"sudo crontab-u root-eAdd the following content* * * */sbin/init 0"Start-up Run"sudo nano/etc/rc.localAdd the following contentsudo nohup python-u/home/pi/unlockhandler.py >/home/pi/unlockhandler.log 2>1 "Download Installation Dependencie