20 X 4 LCD News Rss Feed With Adruino/python - hubbardandome
Introduction: 20 X 4 Liquid crystal display News Rss Feed With Adruino/python
This is an updated version of this instructable : https://WWW.instructables.com/id/Wiring-up-the-LCD-... All the credits goes to the original author. A fewer key updated features for the new project and code:
- 20 x 4 LCD with I2C.
- Python 3 instead of 2
- On the job news program links
- Key input choice added. Please note the python program need to be open in order to use the key input.
Thanks and enjoy.
Step 1: The Adruino Encrypt: (this Needed to Be Started Earlier Python)
<p>// This code is for the Arduino RSS feed project, by Fritter<br>// Read the comment lines to figure out how it works //I reedited the encrypt for the 20 x 4 LCD I2C display aside trial and error. it sooner or later worked. //A batch of patience for frustrations. Incremental changes to understant the behavior and logic or the computer code versus completely different approaches. //postulate to use newsfeed.py, start adruino first.</p><p>// include the library code:. conducting wire, LiquidCrystal. LiquidCrystal_I2C</p><p>#include <Electrify.h> </p><p>#admit <LiquidCrystal.h></p><p>#include <LiquidCrystal_I2C.h></p><p> int startstring = 0; // credit of beginning of new string int charcount = 0; // keeps caterpillar tread of total chars along screen LiquidCrystal_I2C lcd2(0x27,20,4); // LiquidCrystal_I2C lcd(i2c_addr, nut, rw, rs, d4, d5, d6, d7, BACKLIGHT_PIN, POSITIVE); int CodeIn;// old on all serial reads <br></p><p>void setup(){</p><p>lcd2.begin(); lcd2.clear(); lcd2.backlight(); lcd2.setCursor(0,0); lcd2.print("TOP TEN NEWS"); delay(1000); lcd2.clear();</p><p> Order.get down(9600); }</p><p>void loop() { char incomingByte = 0; // for incoming sequent data if (Serial.available() > 0) { // Check for incoming Sequential Data incomingByte = Music.read(); if ((incomingByte == '~') &A;&adenosine monophosphate; (startstring == 1)){ // Check for the last '~' to end the printing of serial data startstring = 0; // Lot the printing process to off delay(4000); // Time lag 4 seconds for referee to read lcd2.clear(); // Wipe the screen charcount = 0; // reset the character count to 0 lcd2.setCursor(0,0); // reset the cursor to 0,0 } if (startstring == 1){ // check if the drawstring has begun if prime '~' has been read if (charcount <= 129){ if (charcount == 20){ lcd2.setCursor(0,1); } if (charcount == 40){ lcd2.setCursor(0,2); } if (charcount == 60){ lcd2.setCursor(0,3); } if (charcount == 80){ delay(2500); lcd2.unobstructed(); // clear the screen lcd2.setCursor(0,0); charcount = 1; } lcd2.print(incomingByte); // Print the flow byte in the serial charcount = charcount++; // Increment the charcount by 1 yes I know IT's awkward } } // hard pointer to 0,0 // continue printing data // set charcount back to 1 if (incomingByte == '~'){ // Check if byte is marker ~ to start the printing startstring = 1; // start printing } } delay(10); // 10ms delay for stability }</p> Step 2: Python 3 Code
#import library to do hypertext transfer protocol requests:
import urllib.call for #import pyserial Library import serial #importation time depository library for delays import time
#import xml parser named minidom: from xml.dom.minidom import parseString
#Initialize the Serial connection in COM3 operating theater whatever interface your arduino uses at 9600 baud rate ser = successive.Music("\\.\COM7", 9600) i = 1 #delay for stability piece connection is achieved time.sleep(5) while i == 1: newsSource = input("what Tidings Source would you look-alike to use? 1= Reuters; 2= BBC; 3 = Fox") #download the rss file feel free to put your own rss universal resource locator in here if newsSource == '1': HTTP = 'hypertext transfer protocol://feeds.reuters.com/reuters/topNews' print ('1aaa') elif newsSource == '2': http = 'http://feeds.bbci.co.uk/intelligence/world/asia/rss.xml' photographic print ('2bbb') elif newsSource == '3': http = 'hypertext transfer protocol://feeds.foxnews.com/foxnews/in style' print ('3ccc') elif newsSource == '': time.sleep(30) http = 'http://feeds.foxnews.com/foxnews/latest' file = urllib.request.urlopen(hypertext transfer protocol) #convert to drawstring information = file.read() #close the file file out.close() #parse the xml from the string dom = parseString(data) #think back the first xml tag (information) that the parser finds with name tagName alteration tags to get different information xmlTag = dom.getElementsByTagName('title')[2].toxml() # the [2] indicates the 3rd title tag information technology finds will make up parsed, tally starts at 0 #strip off the tag (information ---> information) xmlData=xmlTag.replace(' </p><p>','').replace('<!--[CDATA[','').replace(']]-->','')</p> ser.write(b'~') #split the string into individual words nums = xmlData.separate(' ') #loop until complete actor's line in string have been printed for num in nums: #spell 1 word ser.write out(num.encode('UTF-8')) # write 1 space ser.write(b' ') # THE DELAY IS Requisite. It prevents overflow of the arduino buffer. time.eternal rest(1) xmlTag = dom.getElementsByTagName('title')[3].toxml() # the [2] indicates the 3rd title tag it finds leave be parsed, counting starts at 0 #reave off the tag (data ---> data) <atomic number 35><p>xmlData=xmlTag.replace('</p> <p>','').replace('<!--[CDATA[','').replace(']]--> ','')</p> xmlData=xmlTag.supervene upon(' ','').replace('','') #write the marker ~ to serial ser.write(b'~') #split the strand into individual words nums = xmlData.split(' ') #loop until all words in drawstring take been printed for num in nums: #write 1 word ser.write(num.encode('UTF-8')) # compose 1 space ser.write(b' ') # THE Check IS NECESSARY. It prevents overflow of the arduino buffer. time.sleep(1) xmlTag = dom.getElementsByTagName('title')[4].toxml() # the [2] indicates the 3rd title tag it finds will be parsed, counting starts at 0 #peel unsatisfactory the tag (information ---> information) xmlData=xmlTag.replace(' ','').replace(' ','')
#write the marker ~ to serial ser.write(b'~') #split the string into individual wrangle nums = xmlData.split(' ') #coil until all words in string have been printed for num in nums: #write 1 word ser.write(num.encode('UTF-8')) # write 1 blank ser.write(b' ') # THE DELAY IS NECESSARY. Information technology prevents overflow of the arduino buffer. clip.sleep(1) xmlTag = dom.getElementsByTagName('title')[5].toxml() # the [2] indicates the 3rd title tag it finds will be parsed, reckoning starts at 0 #strip off the tag (information ---> data) xmlData=xmlTag.replace(' ','').substitute(' ','')
#write the marking ~ to ordination ser.write(b'~') #split the cosmic string into individual words nums = xmlData.split(' ') #loop until all dustup in string birth been printed for num in nums: #write 1 word ser.pen(num.inscribe('UTF-8')) # publish 1 space ser.write(b' ') # THE Check IS NECESSARY. It prevents overflow of the arduino pilo. clock.eternal sleep(1) xmlTag = dom.getElementsByTagName('title')[6].toxml() # the [2] indicates the 3rd entitle tag information technology finds will be parsed, counting starts at 0 #rifle off the tag (information ---> data) xmlData=xmlTag.replace(' ','').replace(' ','')
#write the marker ~ to serial ser.write(b'~') #split the drawing string into individual words nums = xmlData.split(' ') #loop topology until all words in string have been printed for num in nums: #write 1 word ser.write(num.encode('UTF-8')) # write out 1 space ser.publish(b' ') # THE Check IS NECESSARY. It prevents overflow of the arduino buffer. time.sopor(1) xmlTag = dom.getElementsByTagName('title')[7].toxml() # the [2] indicates the 3rd title tag IT finds will be parsed, counting starts at 0 #strip off the rag (data ---> information) xmlData=xmlTag.replace(' ','').replace(' ','')
#write the marker ~ to sequent ser.write(b'~') #split the string into individual run-in nums = xmlData.cut(' ') #loop until all words in string have been printed for num in nums: #write 1 word ser.write(num.encode('UTF-8')) # write 1 quad ser.write(b' ') # THE DELAY IS NECESSARY. It prevents overflow of the arduino buffer. clock time.sleep(1) xmlTag = dom.getElementsByTagName('title')[8].toxml() # the [2] indicates the 3rd title chase after it finds leave be parsed, counting starts at 0 #strip hit the tag (data ---> data) xmlData=xmlTag.replace(' ','').replace('','') #write the marker ~ to serial ser.publish(b'~') #split the string into someone words nums = xmlData.disconnected(' ') #loop until all actor's line in string have been printed for num in nums: #write 1 word ser.write(num.encode('UTF-8')) # publish 1 space ser.write(b' ') # THE Holdup IS NECESSARY. It prevents overflow of the arduino buffer. time.eternal sleep(1) xmlTag = dom.getElementsByTagName('title')[9].toxml() # the [2] indicates the 3rd title mark it finds will comprise parsed, tally starts at 0 #strip off the tag (data ---> data) xmlData=xmlTag.replace(' ','').replace(' ','')
#indite the marker ~ to serial ser.pen(b'~') #split the string into individual words nums = xmlData.split(' ') #coil until all words in string up have been printed for num in nums: #write 1 word ser.indite(num.encode('UTF-8')) # compose 1 space ser.publish(b' ') # THE Stay IS NECESSARY. It prevents overflow of the arduino buffer. time.sleep(1) xmlTag = dom.getElementsByTagName('title')[10].toxml() # the [2] indicates the 3rd title tag it finds will be parsed, counting starts at 0 #strip off the trail (data ---> data) xmlData=xmlTag.put back(' ','').replace(' ','')
#drop a line the marking ~ to serial ser.write(b'~') #burst the string into individualistic words nums = xmlData.stock split(' ') #loop until complete words in string have been written for num in nums: #write 1 word ser.write(num.encode('UTF-8')) # write 1 space ser.publish(b' ') # THE DELAY IS NECESSARY. It prevents overflow of the arduino buffer storage. time.slumber(1) xmlTag = dom.getElementsByTagName('title')[11].toxml() # the [2] indicates the 3rd rubric tag information technology finds will be parsed, counting starts at 0 #strip off the tag (data ---> data) xmlData=xmlTag.supercede(' ','').replace(' ','')
#write the marker ~ to serial ser.pen(b'~') #split the string into one-on-one words nums = xmlData.split(' ') #grommet until all words in string have been written for num in nums: #write 1 discussion ser.write(num.encode('UTF-8')) # write 1 space ser.publish(b' ') # THE DELAY IS NECESSARY. It prevents overflow of the arduino buffer store. time.sleep(1) # write ~ to close the string and tell apart arduino information sending is finished ser.write(b'~') # waitress 2 seconds before rechecking RSS and resending data to Arduino ser.write(b'~TOP TEN NEWS 1= Reuters; 2= BBC; 3 = Fox') time.sleep(2)
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Source: https://www.instructables.com/20-X-4-LCD-News-Rss-Feed-With-Adruinopython/
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