adafruit pcd8544

Adafruit Raspberry Pi Tutorial Lesson five: Using the control cableTime 2014-05-09 01:11:20 geek Fan Original http://www.geekfan.net/9095/ Theme Raspberry Pi MacOS Linux This article is translated from adafruit.com by Geek fan-boyd Wang. Welcome to the Geek Translation team and join us in translating and sharing. Please refer to the requirements at the end of this article for reprint.OverviewIn this lesson you will learn how to control your Raspberry

This project uses Raspberry Pi with ultra-low-cost software radio (SDR) hardware to receive tracking information sent from an airborne S-mode transponder outside millions of miles. The Raspberry Pi is equipped with a smart 3.5-inch TFT display to provide a convenient overview of aircraft activities. HardwareThe rtl2832u-based small SDR receiver (124-5461) is designed for DVB-T reception and is on the market for the first time. However, due to the efforts of the Linux kernel hackers over th

First step: Upgrade DTC Comiler ro enable SPIWget-c https://raw.githubusercontent.com/RobertCNelson/tools/master/pkgs/dtc.shchmod +x dtc.sh./dtc.shReference URL: Https://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree/compiling-an-overlayStep Two: Install Adafruit ' s beaglebone IO Python Librarysudo ntpdate pool.ntp.orgsudo apt-get updatesudo apt-get install build-essential python-dev python-pip python-smbus-ygit clone git://githu

an important part of the broadcast message, the broadcast message is a kind of paging messages (including phone numbers), Each phone is always listening to the paging message, when it found a pager message is to it (that is, someone is calling it), it will establish a connection with the base station, Contact the person who is calling you through the base Station.4. CodeImport pybimport upcd8544from Machine import spi,pinfrom pyb import uartfrom ubinascii import hexlifyfrom ubinascii Import *le

Since the previous post was resolved by compiling the gpsd3.16 version of GPSD 3.11 after the Raspberry Pi does not work, you want to configure GPSD 3.16 to start automatically. But after a constant attempt to discover or not succeed, a learning document was found in the process: HTTPS://LEARN.ADAFRUIT.COM/ADAFRUIT-ULTIMATE-GPS-HAT-FOR-RASPBERRY-PI/USE-GPSD. I think the GPSD 3.16 itself is no problem. Just I was missing before using the command sudo g

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 Andre Wussow, (+), [emailprotected] description:a simple PCD8544 LCD (Nokia33 10/5110) f

=>spi (1). MOSI ' X8 ' data flow (Master out, Slave in) #CLK =>spi (1). SCK ' X6 ' SPI clockrst = Pyb. Pin (' X20 ') CE = Pyb. Pin (' X19 ') DC = Pyb. Pin (' X18 ') light = Pyb. Pin (' X17 ') lcd_5110 = upcd8544. PCD8544 (SPI, RST, CE, DC, light) count_=0n2 = Pin (' Y3 ', pin.out_pp) N1 = Pin (' Y6 ', pin.out_pp) N1.low () Pyb.delay (2000) N1.high () Pyb.delay (10000) U2 = UART (4, 115200) message= ' tpyboard_gps00000000000001 ' #输入你想要发送的短信的内容; numbe

the problem is between Liquidcrystal::write (uint8_t) and size_t print::write (const char*) two methods.The original code is as follows:1#include 2 3#include 4 5 /*6 liquidcrystal library-custom characters7 8 demonstrates how to add custom characters on an LCD display. 9 The Liquidcrystal Library works with all LCD displays that isTen compatible with the Hitachi HD44780 driver. There is many of One them out there, and you can usually tell them by the 16-pin interface. A - This sketch prints

=1start1=timer (1,freq=10000,callback=start) Stop1=timer (4,FR Eq=2,callback=stop) while True:if (run==1): SPI = Pyb. SPI (1) #DIN =>x8-mosi/clk=>x6-sck #DIN =>spi (1). MOSI ' X8 ' data flow (Master out, Slave in) #CLK =>spi (1). SCK ' X6 ' SPI clock RST = Pyb. Pin (' Y10 ') CE = Pyb. Pin (' Y11 ') DC = Pyb. Pin (' Y9 ') light = Pyb. Pin (' Y12 ') lcd_5110 = upcd8544. PCD8544 (SPI, RST, CE, DC, Light) trig.value (1) pyb.udelay (+) trig.value (0) while

Raspberry Pi on the Cloud (1): Environment preparationRaspberry Pi on the Cloud (2): Uploading sensor data to AWS IoT and leveraging Kibana for presentation1. Sensor installation and configuration 1.1 DHT22 installationThe DHT22 is a temperature and humidity sensor with 3 pins, the first pin on the left (#1) is the 3-5v power supply, the second pin (#2) is connected to the data input pin, and the rightmost pin (#4) is grounded.The Raspberry Pi 3B has a total of 40 pins (gpio,general Purpose I/O

, can be directly connected to various microprocessors via the I²C bus.BMP180 Physical MapHardware wiring DiagramEffect Display diagramAfter the connection is finished, the font.py,upcd8544.py and bmp180 libraries are imported, and the temperature, air pressure and altitude can be read separately by the following methods.Sourceof the foot.py,upcd8544.py LibraryHttp://www.tpyboard.com/support/studyexample14/206.htmlImport the required class library, edit good main.py, directly run on OK, the foll

self.state! = "Off":Os.system ("Echo 0 >%sbrightness"% self.led_path)Self.state = "Off"LEDs = [Simpleled (i) for I in range (4)]While True:For j in Range (4):LEDS[J]. On ()Time.sleep (1)For j in Range (4):LEDS[J]. OFF ()Time.sleep (1)You like to use CLOUD9 to open a file to paste the above code up, and then run, or command line execution, the same effect. Flash ...Adafruit What's wrong with that I don't study. Hands-on, clothed. It's very simple. The

school students. howcast-Learn small skills in everyday life through video. Memrise-uses the concept of gameplay to learn the language. Schooltube-for primary and secondary students, said there are 500,000 videos. instructables-a DIY website. Creativelive-teaches you the skills of photography, music, design, etc., to pay. Do It yourself-teach you to become a home improvement person. Adafruit Learning system-offers free DIY

==0): run=1start1=Timer(1,freq=10000,callback=start)stop1=Timer(4,freq=2,callback=stop)while True: if(run==1): SPI = pyb.SPI(1) #DIN=>X8-MOSI/CLK=>X6-SCK #DIN =>SPI(1).MOSI 'X8' data flow (Master out, Slave in) #CLK =>SPI(1).SCK 'X6' SPI clock RST = pyb.Pin('Y10') CE = pyb.Pin('Y11') DC = pyb.Pin('Y9') LIGHT = pyb.Pin('Y12') lcd_5110 = upcd8544.PCD8544(SPI, RST, CE, DC, LIG

-board positioning system is starting, when the red plug-in indicator end flash (the indicator light is in a slow flashing or off state), the onboard positioning system has been started;(10) After the completion of the above work, our quasi-work has been completed, the rest of the need to do is through the serial port 4 to send the corresponding instructions, to obtain the corresponding data, and then the corresponding data conversion, and display on the display.2, the specific code:　　ImportPybI

steps, you can compile a 32-bit program. For 64-bit systems, 32-bit, 64-bit applications can run, but 64-bit programs run only on 64-bit operating systems.a.32 bit MinGW GCCLibusb-win32-bin-1.2.6.0\lib\gcc\libusb.ab.64 bit MinGW GCCConnect directly to Libusb0.dll or create your own import Libc.32 bit MSVC (=microsoft Visual C + +)Libusb-win32-bin-1.2.6.0\lib\msvc\libusb.libd.64 bit MSVCLibusb-win32-bin-1.2.6.0\lib\msvc_x64\libusb.libc.64 bit MSVC for IA64Libusb-win32-bin-1.2.6.0\lib\bcc\libusb.

, atmega328p provides an internal reference source of 1 v. When measured at room temperature, the output voltage of lm35 is several hundred MV magnitude. Therefore, an internal reference source can be used to obtain a higher measurement resolution. If the 5 V power supply voltage is used as the reference source, the measurement resolution is 5000mV/1024 = ~ 9mV, corresponding temperature 0.49 °C; If the internal reference source of 1.1v is used, the measurement resolution is 1100mV/1024 = ~ 1