So I don't think this issue is related necessarily to my code, because I'm thrown this error even running some formally working code examples from my textbook (Practical Python Programming for IoT):

Can't connect to pigpio at localhost(8888)

Did you start the pigpio daemon? E.g. sudo pigpiod

Did you specify the correct Pi host/port in the environment
E.g. export PIGPIO_ADDR=soft, export PIGPIO_PORT=8888

Did you specify the correct Pi host/port in the
pigpio.pi() function? E.g. pigpio.pi('soft', 8888)
Traceback (most recent call last):
  File "/home/pypi/images/test1.py", line 33, in <module>
    Device.pin_factory = PiGPIOFactory() #set gpiozero to use pigpio by default.
  File "/usr/local/lib/python3.9/dist-packages/gpiozero/pins/pigpio.py", line 126, in __init__
    raise IOError('failed to connect to %s:%s' % (host, port))
OSError: failed to connect to localhost:8888

I'm a super novice and I'm attempting to make a pseudo-robot that when you press a button, a red led will light up (to signal that it's recording) and record 5 seconds of audio. It will then take that audio, convert it to text, then run said text through DeepAi's GPT3 text generator, return the new text, and play it out a speaker with Googles TTS. I'm running a Raspberry Pi 3 with Bullseye. If anyone knows of a solution to this problem, which I believe is system based and not code based (though if you have solutions/tips for my shitty code I'd more than welcome that too), I'd greatly appreciate it.

Here's my code below:


import speech_recognition as sr
import requests
# Import the required module for text 
# to speech conversion
from gtts import gTTS 
# This module is imported so that we can 
# play the converted audio
import os

#GPIO/Pi dependcies 
#from gpiozero import Device, LED, Button                                                 # (1)
#from gpiozero.pins.pigpio import PiGPIOFactory
#import signal     

import random
import time
import wave
import io
import requests

from gpiozero import Device, LED, Button                                                 # (1)
from gpiozero.pins.pigpio import PiGPIOFactory
import signal         

#intializing pin numbers

Device.pin_factory = PiGPIOFactory() #set gpiozero to use pigpio by default.

filename = "helloWorld.wav"

# initialize the recognizer
r = sr.Recognizer()
#initialize text variable
text = ''

def pressed():

    with sr.Microphone() as source:
    # read the audio data from the default microphone
        mic_audio_data = r.record(source, duration=5)
    # convert speech to text
    micText = r.recognize_google(mic_audio_data)

    # ------------------- TEXT TO DEEP AI -------------------

    r = requests.post(
            'text': micText,
        headers={'api-key': '4588448a-9284-4401-b3cb-552695a96edc'}
    json = r.json()
    micOutput = json.get('output')

    # ------------------- TEXT TO SPEECH -------------------

    # Language in which you want to convert
    language = 'en'
    # Passing the text and language to the engine, 
    # here we have marked slow=False. Which tells 
    # the module that the converted audio should 
    # have a high speed
    myobj = gTTS(text=micOutput, lang=language, slow=False)
    # Saving the converted audio in a mp3 file named
    # welcome 
    # Playing the converted file
    os.system("mpg123 micOutput.wav")

button = Button(BUTTON_GPIO_PIN, pull_up=True, bounce_time=0.1) # Bounce time in seconds 

button.when_pressed = pressed                                                                         



  • Did you start the pigpio daemon? E.g. sudo pigpiod What OS? What does sudo ss -lntup | grep 8888 show?
    – Milliways
    May 30, 2022 at 2:01
  • sudo pigpiod worked! thank you! i dunno why i decided to do such a big project outside of my wheelhouse. appreciate you <3
    – homfgomery
    May 30, 2022 at 2:07
  • pigpiod is an excellent tool, but frankly not the easiest to use and sparsely documented. If using gpiozero I suggest you stick with the default pin factory (RPi.GPIO) unless you need to so something more exotic.
    – Milliways
    May 30, 2022 at 2:12


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Browse other questions tagged or ask your own question.