Radio Internet Wi‑Fi con Raspberry Pi y Arduino: Emisoras globales en streaming

Creé un script de lista de reproducción y un script Python (en la pestaña Código) y hice que el script Python se auto-ejecute al arrancar la Raspberry. También añadí otro botón para mostrar menú (IP, salida de audio, etc.).

Actualización: Lo rehice: añadí codificadores rotativos para sintonía y volumen, e imprimí la caja en 3D:

Código

• piradio (Python)
• radio_plylist.sh (Shell)

piradio (Python)

No soy programador de Python (es mostly copy/paste de trozos encontrados en Google). Hasta ahora funciona :) Este script debe cargarse al inicio en la Pi (lo añadí a crontab).

from datetime import datetime
from subprocess import *
from time import sleep, strftime
from Queue import Queue
from threading import Thread
import os
from nanpy import Arduino, Lcd
import socket

Arduino.pinMode(14, INPUT)
lcd = Lcd([8,9,4,5,6,7],[16,2])  # Pines LCD para shield SainSmart
lcd.printString("Ruben's RadioZ",0,0)
lcd.printString("Loading" + "."*3,0,1)
sleep(5)

max_trax = 10
x = 1
loop_menu = 1
loop_radio = 1
stations = []
stations.append("Ecco 99 ")
stations.append("Galgalaz ")
stations.append("Galaz ")
stations.append("88 FM ")
stations.append("Gimel ")
stations.append("Radios 100fm ")
stations.append("Kol Hamusica ")
stations.append("WQXR New York ")
stations.append("WPR Winsconsin ")
stations.append("BBC world servic")
stations.append("LINN jazz")
stations.append("LINN classical")

def get_local_ip_address(target):
    ipaddr = ''
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        s.connect((target, 8000))
        ipaddr = s.getsockname()[0]
        s.close()
    except:
        pass
    return ipaddr

print "Raspberry Pi - Local IP Address"
print(get_local_ip_address('10.0.1.1'))
print(get_local_ip_address('google.com'))

def display_ipaddr():
    show_wlan0 = "ip addr show wlan0 | cut -d/ -f1 | awk '/inet/ {printf \"w%15.15s\", $2}'"
    show_eth0 = "ip addr show eth0 | cut -d/ -f1 | awk '/inet/ {printf \"e%15.15s\", $2}'"
    ipaddr = ''
    ipaddr = get_local_ip_address('10.0.1.1')
    lcd.printString('IP Address:',0,0)
    lcd.printString(ipaddr,0,1)
    sleep(2)

def displaymenu():
    if x==1:
        lcd.printString("1. Display ",0,0)
        lcd.printString(" IP Address ",0,1)
    elif x==2:
        lcd.printString("2. Audio Output ",0,0)
        lcd.printString(" to hdmi Port ",0,1)
    elif x==3:
        lcd.printString("3. Audio Output ",0,0)
        lcd.printString(" to Analog port",0,1)
    elif x==4:
        lcd.printString("4. Audio Output ",0,0)
        lcd.printString(" Auto Sel. Port",0,1)
    elif x==5:
        lcd.printString("5. Reload the ",0,0)
        lcd.printString(" Playlist ",0,1)
    elif x==6:
        lcd.printString("6. ShutDown ",0,0)
        lcd.printString(" the System ",0,1)
    else:
        lcd.printString("7. Exit to ",0,0)
        lcd.printString(" Main Menu ",0,1)

def load_playlist():
    output = run_cmd("mpc clear")
    output = run_cmd("/home/pi/radio/radio_playlist.sh")

def run_cmd(cmd):
    p = Popen(cmd, shell=True, stdout=PIPE, stderr=STDOUT)
    output = p.communicate()[0]
    return output

def getKey():
    val = Arduino.analogRead(14)
    if val == 1023: return "NONE"
    elif val < 100: return "RIGHT"
    elif val < 150: return "UP"
    elif val < 330: return "DOWN"
    elif val < 510: return "LEFT"
    elif val < 750: return "SEL"
    else: return "KBD_FAULT"

load_playlist()

def getTrack():
    L = [S.strip('\n') for S in os.popen('mpc').readlines()]
    output = run_cmd("mpc current")
    station = output[0:16]
    track = output[-17:-1]
    lcd.printString(station + " "*(16 - len(station)), 0, 0)
    lcd.printString(track + " "*(16 - len(track)), 0, 1)
    track_num = 1
    os.system("sudo service mpd restart")
    os.system("mpc play " + str(track_num))

while loop_radio == 1:
    getTrack()
    loop_menu = 1
    x = 1
    key = getKey()
    if key == "UP":
        track_num += 1
        if track_num > max_trax: track_num = 1
        lcd.printString(stations[track_num-1],0,0)
        os.system("sudo service mpd restart")
        os.system("mpc play " + str(track_num))
        getTrack()
    elif key == "DOWN":
        track_num -= 1
        if track_num < 1: track_num = max_trax
        lcd.printString(stations[track_num-1],0,0)
        os.system("sudo service mpd restart")
        os.system("mpc play " + str(track_num))
        getTrack()
    elif key == "LEFT":
        os.system("mpc volume +10")
        lcd.printString(16*" ", 0, 0)
        lcd.printString(16*" ", 0, 1)
        output = run_cmd("mpc volume")
        lcd.printString("VOLUME UP:", 0, 0)
        lcd.printString(output, 5, 1)
        sleep(.25)
        lcd.printString(16*" ",0,0)
        lcd.printString(16*" ",0,1)
    elif key == "RIGHT":
        os.system("mpc volume -10")
        lcd.printString(16*" ",0,0)
        lcd.printString(16*" ", 0,1)
        output = run_cmd("mpc volume")
        lcd.printString("VOLUME DOWN:", 0, 0)
        lcd.printString(output, 5, 1)
        sleep(.25)
        lcd.printString(16*" ",0,0)
        lcd.printString(16*" ",0,1)
    elif key == "SEL":
        while loop_menu == 1:
            displaymenu()
            key = getKey()
            if key == "RIGHT":
                os.system("mpc volume +10")
                lcd.printString(16*" ", 0, 0)
                lcd.printString(16*" ", 0, 1)
                output = run_cmd("mpc volume")
                lcd.printString("VOLUME UP:", 0, 0)
                lcd.printString(output, 5, 1)
                sleep(.25)
                lcd.printString(16*" ",0,0)
                lcd.printString(16*" ",0,1)
            elif key == "LEFT":
                os.system("mpc volume -10")
                lcd.printString(16*" ",0,0)
                lcd.printString(16*" ", 0,1)
                output = run_cmd("mpc volume")
                lcd.printString("VOLUME DOWN:", 0, 0)
                lcd.printString(output, 5, 1)
                sleep(.25)
                lcd.printString(16*" ",0,0)
                lcd.printString(16*" ",0,1)
            elif key == "UP":
                if x <= 1: x = 7
                else: x = x - 1
            elif key == "DOWN":
                if x >= 7: x = 1
                else: x = x + 1
            elif key == "SEL":
                if x == 1:
                    display_ipaddr()
                    sleep(1)
                elif x == 2:
                    output = run_cmd("amixer -q cset numid=3 2")
                    lcd.printString("Audio OUT-->HDMI", 0, 0)
                    lcd.printString("output ", 0, 1)
                    sleep(.5)
                elif x == 3:
                    output = run_cmd("amixer -q cset numid=3 1")
                    lcd.printString("Audio OUT->Analog", 0, 0)
                    lcd.printString("output ", 0, 1)
                    sleep(.5)
                elif x == 4:
                    output = run_cmd("amixer -q cset numid=3 0")
                    lcd.printString("Audio OUT-> Auto", 0, 0)
                    lcd.printString("output ", 0, 1)
                    sleep(.5)
                elif x == 5:
                    load_playlist()
                    os.system('mpc play 1')
                elif x == 6:
                    lcd.printString("Good Bye ", 0, 0)
                    lcd.printString("Have a Nice Day ", 0, 1)
                    output = run_cmd("mpc stop")
                    quit()
                elif x == 7:
                    loop_menu = 0
                    getTrack()
                    break
            elif key == "RIGHT":
                os.system("mpc volume +2")
                lcd.printString(16*" ",0,0)
                lcd.printString(16*" ", 0,1)
                output = run_cmd("mpc volume")
                lcd.printString("VOLUME UP:", 0, 0)
                lcd.printString(output, 5, 1)
                sleep(.25)
                lcd.printString(16*" ",0,0)
                lcd.printString(16*" ",0,1)
            elif key == "LEFT":
                os.system("mpc volume -2")
                lcd.printString(16*" ", 0, 0)
                lcd.printString(16*" ", 0, 1)
                output = run_cmd("mpc volume")
                lcd.printString("VOLUME DOWN:", 0, 0)
                lcd.printString(output, 5, 1)
                sleep(.25)
                lcd.printString(16*" ",0,0)
                lcd.printString(16*" ",0,1)

radio_plylist.sh (Shell)

Mi lista de reproducción con emisoras israelíes:

#! /bin/sh
mpc clear 1>/dev/null
#1 ecco99
mpc add https://99.livecdn.biz/99fm_aac
#2 galgalaz
mpc add https://glglzwizzlv.bynetcdn.com/glglz_mp3
#3 galaz
mpc add https://glzwizzlv.bynetcdn.com/glz_mp3
#4 88 fm
mpc add https://ibala.vidnt.com:8000/iba_radio-88fmM
#5 gimel
mpc add https://ibala.vidnt.com:8000/iba_radio-gimelM
#6 radios 100 fm
mpc add https://100fm.streamgates.net/Radios100Fm
#7 kol hamusica
mpc add https://ibala.vidnt.com:8000/iba_radio-kolmusicaM
#8 wqxr
mpc add https://stream.wqxr.org/wqxr
#9 npr current
mpc add https://current.stream.publicradio.org/kcmp.mp3
#10 bbc
mpc add https://bbcwssc.ic.llnwd.net/stream/bbcwssc_mp1_ws-eieuk
#11 linn jazz
mpc add https://radio.linnrecords.com:8003/autodj
#12 linn classical
mpc add https://radio.linnrecords.com:8004/autodj

Esquemáticos