raspberry-pi3

问题 I am trying to recreate this project. What I have is a server (my computer), and a client (my raspberry pi). What I am doing differently than the original project is that I am trying to use a simple webcam instead of a raspberry pi camera to stream images from my rpi to the server. I know that I must: Get opencv image frames from the camera. Convert a frame (which is a numpy array) to bytes. Transfer the bytes from the client to the server. Convert the bytes back into frames and view.

问题 So, one day I was using TeamViewer to connect to my RPi3 and told it to reboot. As soon as it finished, I connected to the pi, started the bot, and it looked like it was starting up properly. When I went to send a command on discord, the bot didn't respond. The bot is still running though. I tried changing some of the code, but nothing changed. Here's the code: // Load up the discord.js library const Discord = require("discord.js"); // This is your client. Some people call it `bot`, some

问题 I want to run a Python 3 script on my Raspberry Pi and do stuff with it. The script works just fine on my Mac, however I want it to run 24/7 and the Pi is more energy efficient. Not to mention I need my Mac for other things. from selenium import webdriver from selenium.webdriver.common.keys import Keys browser = webdriver.Firefox() browser.get('www.website.com') I am running Raspbian Jesse and have installed Iceweasel (installed today through command line, V 45) and geckodriver (0.18.0).

问题 I want to do real time voice transmission through uart of two raspberry pi 3b.Currently I am able to transmit the real time voice through uart by recording the audio in fifo file and at the same time writing that file to uart(Tx). But at receiving side I am not able to receive data properly.The code i am using is as below. import os import serial import select ser=serial.Serial('/dev/ttyS0',19200) os.system('mkfifo audio1.fifo') with open('audio1.fifo') as fifo: while True: select.select(

问题 I want to do real time voice transmission through uart of two raspberry pi 3b.Currently I am able to transmit the real time voice through uart by recording the audio in fifo file and at the same time writing that file to uart(Tx). But at receiving side I am not able to receive data properly.The code i am using is as below. import os import serial import select ser=serial.Serial('/dev/ttyS0',19200) os.system('mkfifo audio1.fifo') with open('audio1.fifo') as fifo: while True: select.select(

问题 How can I remove Homebridge from a Raspberry Pi 3. I have attempted the following without any luck. pi@Development:~ $ sudo npm uninstall homebridge npm WARN enoent ENOENT: no such file or directory, open '/home/pi/package.json' npm WARN pi No description npm WARN pi No repository field. npm WARN pi No README data npm WARN pi No license field. I have also attempted to remove it not as sudo. A much longer result but still no luck. pi@Development:~ $ npm uninstall homebridge npm WARN enoent

问题 How can I remove Homebridge from a Raspberry Pi 3. I have attempted the following without any luck. pi@Development:~ $ sudo npm uninstall homebridge npm WARN enoent ENOENT: no such file or directory, open '/home/pi/package.json' npm WARN pi No description npm WARN pi No repository field. npm WARN pi No README data npm WARN pi No license field. I have also attempted to remove it not as sudo. A much longer result but still no luck. pi@Development:~ $ npm uninstall homebridge npm WARN enoent

问题 How can I remove Homebridge from a Raspberry Pi 3. I have attempted the following without any luck. pi@Development:~ $ sudo npm uninstall homebridge npm WARN enoent ENOENT: no such file or directory, open '/home/pi/package.json' npm WARN pi No description npm WARN pi No repository field. npm WARN pi No README data npm WARN pi No license field. I have also attempted to remove it not as sudo. A much longer result but still no luck. pi@Development:~ $ npm uninstall homebridge npm WARN enoent

问题 I have setup my Pi for SSH remote host development using NetBeans. I can confirm: in /etc/ssh/sshd_config X11Forwarding yes X11DisplayOffset 10... In addition, xauth is installed on the remote Pi. I have installed XQuartz on my client mac. Upon ssh -X pi@IPaddress, xquartz opens and if i echo $DISPLAY on the remote Pi i get localhost:12.0 ... the number changes with each terminal. Currently, if have incorrectly set the project environment in netbeans with: DISPLAY=localhost:11.0 (this is

问题 I am working on a school project which is related to Image Processing using OpenCV Python and Raspberry Pi 3. The hardware of Raspberry Pi 3 cannot handle the video from camera consecutively, therefore I'm thinking about only capture a picture after every 5 seconds from the camera and use it to recognize what I need, then continue. I did some research on the internet and found a function called time.sleep(5), however this function only pause the camera 5 seconds and then continue. Can anyone