Unanswered Questions
806 questions with no upvoted or accepted answers
4
votes
2
answers
8k
views
Alsa lib error pyaudio on raspberry pi 3
I'm getting these ALSA lib errors when trying to use pyaudio.
I know my mic works as I can live stream audio through gstreamer.
Can anybody explain to me why i'm getting these issues:
ALSA lib ...
CommunityBot
- 1
4
votes
0
answers
830
views
RPI 3B and Tiny Thermal Printer - Unable to use python library
I'm having trouble hooking up my Raspberry Pi 3 Model B to my Adafruit Tiny Thermal Printer (nb: not the mini thermal printer - this is the one with a mini-USB port built in).
I've got it connected ...
- 1
4
votes
0
answers
484
views
Speech Recognition ERROR
I am using a speech recognition library on a Raspberry Pi in Python that I found here and I installed it through pip. I also had to install Pyaudio of their site here. Pip would not work for Pyaudio ...
- 11.9k
3
votes
0
answers
3k
views
How to make sure BlueZ NoInputNoOutput agent does not ask for user authorization?
I am trying to pair my custom made BLE device with a Raspberry Pi 4, using the bluepy library, programmatically. I do not want to press "accept" or type "yes" whenever I try to ...
- 131
3
votes
0
answers
205
views
ADXL345. Bits, resolution and g's
I have a Kistler type 8921 which produces 1g (10m/s2) RMS (at 159 Hz). The ADXL345/Raspberry Pi 3 setup should produce similar g's, but currently doesn't.
As can be seen, it is not just about a ...
- 133
3
votes
1
answer
2k
views
Raspberry Pi 3 & Arduino: [bluetooth.btcommon.BluetoothError: (112, 'Host is down')]
I am trying to send informations from Raspberry Pi 3 to Arduino Uno with bluetooth. I managed to connect the Arduino's bluetooth module with the Raspberry Pi.
But I have this error when I execute my ...
CommunityBot
- 1
3
votes
0
answers
834
views
Raspbian Reboot Hangs
Having a bit of a problem on Raspbian Jesse. I have 2 switches which I use to shut down and restart my raspberry pi. Python does an os.system ("sudo reboot") and os.system("sudo shutdown -h now") on ...
- 173
3
votes
0
answers
858
views
RPi.GPIO autocompletion
Is there any way to have auto-completion when working with the RPi.GPIO in Python? I don't see it having any Python sources that could be used for it.
I'm using IntelliJ IDEA, which uses PyCharm's ...
- 15.9k
3
votes
0
answers
2k
views
Raspberry Pi 3 Bluetooth Baud rate
How do I increase the available baud rate of the bluetooth module for the Raspberry P1 3 model B?
I have tried editing the /boot/config.txt file with:
init_uart_baud=1000000
init_uart_clock=16000000
...
- 31
3
votes
0
answers
2k
views
Emulate a Bluetooth Keyboard with a Raspberry Pi 3
Raspberry Pi 2 Model B (Raspbian Wheezy and bluez 4.99)
Executes perfectly using a Bluetooth dongle.
Raspberry Pi 3 Model B (Raspbian Jessie and bluez 4.99)
Attempting to pair with Windows laptop ...
3
votes
0
answers
7k
views
Using Python with Bluetooth on Raspberry Pi 3
Following this tutorial I successfully ran PiTooth on the RPi2MB (Wheezy).
Following the same tutorial on the RPi3MB (Jessie) I get the following message "Could not configure bluetooth. Is ...
CommunityBot
- 1
3
votes
0
answers
4k
views
Jack server not working on Raspbian
I wrote a little python app (using PyDub), that plays sound files.
Everytime I run it, I get the these errors:
ALSA lib pulse.c:243(pulse_connect) PulseAudio: Unable to connect: Connection refused
...
- 31
3
votes
0
answers
721
views
Running two cameras at the same time (Pi Camera & USB camera)
I would like for my project to have one camera (PiCamera) Streaming video.
And another USB Camera (PS3 Camera) taking pictures when I execute this function:
def grabPicture(self):
grab_cam = ...
- 15.9k
3
votes
0
answers
1k
views
OpenCV. Can't open video from usb camera on the screen
When I'm trying to start simple code, the frame opens and don't respond.
import numpy as np
import cv2
cap = cv2.VideoCapture(0)
while(True):
ret, frame = cap.read()
cv2.imshow('AIR',frame)
...
- 15.9k
3
votes
0
answers
296
views
Slice of Radio and Ithobox
I've got a Raspberry Pi with Ciseco Slice of Radio and I'd like to control my Ithobox LINK
It has an 868 Mhz RF transmitter/receiver and I also have the optional RF remote control unit which I'll be ...
- 31