raspberry-pi3

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

问题 I'm currently working with RaspberryPi-3 with Rasbian installed. I want to auto-reconnect to a network to a specific network. Going through the internet, I found out a way to do it i.e. by editing the interfaces file under /etc/network. I want to edit this file using some script (preferably Python-3). I just need to add these lines to the interfaces file: auto wlan0 iface wlan0 inet dhcp wpa-ssid <my-SSID> wpa-psk <my-PassKey> Please help me regarding this issue. 回答1: If you have no specific

问题 I am tasked with building profibus master and slave network using Rpi and Rs-485 convertor . One Rpi will be master and other will be slave. I am using https://github.com/mbuesch/pyprofibus for DP-stack to implement the same. How can I assign address to master and slave rpi boards to use in profibus initialization sequence . It is not accepting the IP address given to the rpi boards 回答1: Since you talk about IP addresses I think you may be mistaken Profibus with Profinet. If that's the case

问题 I'm developing an app on Raspberry Pi 3 using Android Things as OS. I started using the normal Raspberry Pi 3 with the official touch screen. Everything worked fine, so I tried the same setup on the development board with the rpi compute module 3 lite (CM3L). Unfortunately the display doesn't turn on. After some research I found this: https://www.raspberrypi.org/documentation/hardware/computemodule/cmio-display.md Seems like I have to adjust the options for SDA and SLC on the OS as well as

问题 I'm quite a newbie with python, and programming in general, and I am currently struggling with installing and using the library librosa. I thought I succeeded installing it with: git clone https://github.com/librosa/librosa.git librosa and also with installing numpy and scipy seperately, again with: git clone https://github.com/numpy/numpy.git numpy git clone https://github.com/scipy/scipy.git scipy and it seemed to finally work. I could also: import librosa without any problems, but as I

问题 Question about framerates on the picamera v2: According to the documentation of picamera , the following framerates are feasible for this hardware: Resolution Aspect Ratio Framerates Video Image FoV Binning 1 1920x1080 16:9 0.1-30fps x Partial None 2 3280x2464 4:3 0.1-15fps x x Full None 3 3280x2464 4:3 0.1-15fps x x Full None 4 1640x1232 4:3 0.1-40fps x Full 2x2 5 1640x922 16:9 0.1-40fps x Full 2x2 6 1280x720 16:9 40-90fps x Partial 2x2 7 640x480 4:3 40-90fps x Partial 2x2 However, when

问题 I'm using this code to write a Byte Array inside a file BMP: private async void ScriviBMP() { using (Stream stream = immagineBitmap.PixelBuffer.AsStream()) { await stream.WriteAsync(arrayImmagine, 0, arrayImmagine.Length); } StorageFolder folder = KnownFolders.PicturesLibrary; if (folder != null) { StorageFile file = await folder.CreateFileAsync("area2_128x128" + ".bmp", CreationCollisionOption.ReplaceExisting); using (var storageStream = await file.OpenAsync(FileAccessMode.ReadWrite)) { var

问题 I'm trying to build an ARM (arm32v7) container, but using an x86_64 host. While I know there are some pretty cool things like Resin using Qemu shenanigans, and Multiarch for doing crossbuilding of generic containers, I have a slight issue: The container I'm trying to build starts off as multiarch, and so Docker always chooses the x86 image in the FROM instruction. I want to build an ARM container from a Multi-arch Rust image on an x86 host. The problem is, I can't find any documentation to

问题 Trying to connect remotely by Remote GDB Debugger in Visual Studio 2015 to Raspberry Pi 3 (ARM), but permanently got "Could not create directories, mkdir exit code: 1" Tried the solution described on Visual Studio 2017 Could not create directories, mkdir exit code: 1 question, but still same. I'm not "fluent" with Linux, so maybe It's just simple troubles with user adding or sudo groups modifying, but maybe someone made the same things successfully to explain? 回答1: Move project folder to

问题 Trying to connect remotely by Remote GDB Debugger in Visual Studio 2015 to Raspberry Pi 3 (ARM), but permanently got "Could not create directories, mkdir exit code: 1" Tried the solution described on Visual Studio 2017 Could not create directories, mkdir exit code: 1 question, but still same. I'm not "fluent" with Linux, so maybe It's just simple troubles with user adding or sudo groups modifying, but maybe someone made the same things successfully to explain? 回答1: Move project folder to