Questions tagged [pi-3b+]

Use for questions specific to the Raspberry Pi 3 Model B+

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25 views

Cannot log in to raspbian buster with default username and password

I have an issue logging in to my new raspbian buster (raspbian 10 Raspbian Buster with desktop and recommended software) using the known default {pi, raspberry}. My keyboard is in English and I have ...
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0answers
18 views

RPi 3B+, How accurate is the crystal oscillator? [closed]

I have developed a spectrum analyzer driver using the kernel of the RPi where every time I sample the data, I sample the time (from the system timer operating at 1 MHZ). The results I received are ...
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0answers
24 views

Raspberry Pi OpenVPN connects, but no internet access

I am trying to make a VPN to my Raspberry Pi 3 B. I followed this video and installed OpenVPN in order to do it. I did the dynamic DNS thing and also port forwarded port 443 because I chose TCP since ...
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1answer
29 views

how to install roblox and roblox studio on raspberry pi 3

please tell me how to install and run roblox and roblox studio on raspberry pi 3. it should not use pip or pip3.i have already tried using add/remove software app and sudo apt-get install roblox.
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1answer
22 views

How to connect RPI with its wifi credential on pendrive?

I'm using Rpi 3b+ and every time I carry it to any location, I have to attach it to the HDMI screen and enter the wifi credential, How can I set up a Pendrive so when I plugged in the Pendrive(for ...
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0answers
21 views

RPI3b+: UART serial communication problem

I have my RPI setup to communicate serially with another board. Currently, I have a usb to serial converter which is plugged into one of the RPI ports. This works well but, I want to take that out and ...
0
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1answer
27 views

RPI4b cannot detect RPI3b via wifi even when both have the same SSID and passcode

I have a pretty complicated system going on and I need some help figuring out what I am doing wrong. I am not a computer engineer or have had much experience with RPI. I am running two RPI's with a ...
1
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1answer
19 views

OpenCV camera resolution

I am working on a project with OpenCV. It is running on a Raspberry Pi 3 B+. When i start the camera, and do some visual processing the framerate becomes really low and there is a lot of lag. My ...
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0answers
20 views

Raspbian with opencv

I am working on a project that will run on raspberry pi 3 B+. It requires OpenCV and I have a lot of problems installing it(I spent last 2 days trying to install it without any success). I was just ...
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1answer
36 views

3B+ locking up (blank video output) with red & green LEDs solid, requiring reboot. Which logs to check? [closed]

My Pi 3B+ (full config details at link) has started to lock up out of the blue (red and green LEDs on), requiring a reboot. Which system log(s) do I check to see what the problem might be?
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0answers
24 views

Button hardware for RPI

I have the following circuit: I am wondering if this configuration will work if I'm trying to add buttons. I wanted to set them up as GPIO=GPIO.PUD_DOWN and to have it activate on the rising edge, ...
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1answer
35 views

Installing the recommended software after install the desktop only version of raspian

I have installed raspbian buster without recommended software on my raspberry pi 3b+ and i am curious to see what are the recommended software. What do i have to do to install them on top of the ...
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16 views

Problems with init=bin/sh working

I followed the below instructions. Putting the init at the end of the sole line in cmdline. boot=UUID=2311-4211 disk=UUID=69a6af94-e21a-450d-bf5e-fcc08d992566 init=/bin/sh I return sd card to pi and ...
1
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1answer
38 views

Hosting angular 8 app on a Raspberry pi

I installed node.js, npm and angular-cli. My intention is to host an angular 8 app on the raspberry-pi which I can view from other devices. So, I execute ng new test-app, change into the test-app ...
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0answers
28 views

Raspberry Pi has no GPIO Output

my raspberry pi 3B+ hast the latest Buster Update(Installed 23.03.2020). When I measure the GPIO output I get with at the 5V pin around 0.025V of output and at the 3V pin the multimeter says 0V. I ...
1
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1answer
24 views

How to connect an Raspberry pi to an android phone via bluetooth?

I am working on a project in which I'm supposed to take some readings from sensors, then do some analysis on them and output a result. I want to display this result on my android phone. How would I go ...
0
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0answers
17 views

compiling hardware-accelerated VLC into YOCTO for Raspberry Pi 3

How does one achieve it to compile a hardware-accelerated (in this case via the Broadcom VC4) version of the VLC media player for the Yocto project? I already tried to install VLC via the local.conf ...
1
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2answers
35 views

RGB Led flickers when controlled by GPIO Raspberry

I found a python script to control an RGB LED with GPIO output pins from a raspberry. I connected a common cathode LED to the GPIO Pins and added a 300 ohm resistor to the ground pin. When I run the ...
0
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0answers
12 views

What is Pin Out of PoE 4-pin header on RPi-3B+?

Going to add a Nextion 3.5" Enhanced display that includes a 4 wire cable. Searched but haven't been able to locate pin out of header. Thanks for any links or info Provided.
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0answers
15 views

Only one application can output audio to bluetooth speaker at a time

I have a rpi 3b+ running on the latest Raspbian Stretch with desktop (2019 April 09), I updated/upgraded all packages to newest version, everything related to bluetooth & audio is kept default. I ...
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0answers
10 views

How to set up bluetooth broadcasting on a pi 3 b v1.2

um new to working with bluetooth on linux or on a raspberry pi but i have managed to set up the controllers. What i want to accomplish now is using python to connect or broadcast my raspberry pi as a ...
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0answers
36 views

Controlling multiple arduinos from a pi 3b+

I'm working on a robotics project where we need to control 2 motors, read data from 8 ultrasonic sensors, display a 2 digit number on 7 segment displays, drive servos and a few more things. The ...
0
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1answer
65 views

External SSD not recognized after installing webmin

I have an SSD connected to my rpi3 using the Element14 Pi Desktop kit. This hardware configuration has been working; this issue started after re-imaging the SD card with Raspbian Stretch. The SSD is ...
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0answers
72 views

Trying to create a clock with an LCD

Today I bought an LCD and connected it to my Rasberry pi in order to make a clock and then an alarm. I have programmed the clock and when I run it there are no issues. The problem is that nothing is ...
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0answers
37 views

3.5 inch TFT Display and RC522 use on rasp 3b+

I am new to raspberry. Currently, I am trying applying 3.5 inch TFT Display and rc522 on my rasp 3b+. Is that possible ? I already used pin 1 to 26 for tft display. Then what can i do if i trying to ...
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1answer
94 views

How make Raspbian boot faster from USB-stick (without SD-card) on a Raspberry pi 3 B+?

I already did things like disabling WiFi, Bluetooth, etc. but my gut tells me, there should be some USB-specific settings, which can make the pi boot faster. I am interested in these settings. My ...
2
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1answer
59 views

Problem with wifi access point

I have a problem with wifi access point on Raspberry 3B+. /etc/hostapd/hostapd.conf: interface=wlan0 driver=nl80211 ssid=Rpi_ap hw_mode=g channel=7 ieee80211n=1 wmm_enabled=0 macaddr_acl=0 auth_algs=...
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1answer
129 views

Disable 5Ghz Wifi-band on Raspberry Pi 3B+

is it possible to disable the ability to use 5Ghz for the wlan0 interface? I only want to use 2.4 Ghz Wifi Networks. So only 2.4Ghz Wifi is available and 5Ghz is disabled. thanks in advance
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0answers
29 views

Strange noise spikes in recorded sound

I have two RPI: pi2 and pi3b+, both have an identical usb soundcard attached, identical microphones, they both have the same DIY shield around microphone cable and soundcard and it is grounden in the ...
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0answers
26 views

How fast I can read at raspberry pi 3 model b's GPIO

I want to read the output of OV7670 camera module that produces 8-bit output at a very high frequency. The output pixel clock frequency is around 8MHz. I have to sample those 8-bit data at raspberry ...
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0answers
38 views

Setting Up A Standalone WiFi Network

I am starting to use Kali Linux for penetration testing. To use it, I need a WiFi network. I don’t want to use my own network but instead, I want to use my Raspberry Pi to create a WiFi network that I ...
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0answers
24 views

Conditional Servo Movement

I am currently working on getting a raspberry pi to drive a servo motor according to a set condition. In the final program I will have a sensor determining the level of water in a glass, when this ...
1
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1answer
72 views

Automatically shutdown Pi 104 hours after booting?

I have a project where I'd like to plug in (to power) the Raspberry Pi, have it start running a Python program to write data to a USB stick, and shut itself down after 104 hours. It will NOT be ...
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1answer
40 views

automate filesystem expansion - booting from a USB Drive (8GB Image burned to 32GB USB)

I have an 8GB image that is burned to a 32GB USB drive. How can I automate this filesystem expansion process? Is there a script I can create to expand the USB correctly and fully? How can I find the ...
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2answers
157 views

How to SSH Into Raspberry Pi and Set It Up Headlessly on Kali Linux

I've been using Raspbian for a while now. I came across Kali Linux and I want to use it. I know how to install it, but I don't want to use a HDMI monitor with a keyboard and mouse. Is there a way to ...
0
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0answers
59 views

RPi3b wlan0 not receiving DHCP lease when WPA2-PSK is on

RaspberryPi 3 Model B v1.2 Raspbian Buster Desktop (February 2020) Issue: Cannot get DHCP lease for wlan0 when WiFi network has WPA2-PSK (AES 128) enabled. Running the WiFi without any security ...
1
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1answer
50 views

Is it safe to use 3V3 on raspberry pi 3B+ to control a 3V DC motor?

I want to connect power to a 3V DC motor straight from 3v3 GPIO. Is it safe or will I brick my Pi 3B+ ?
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0answers
26 views

Why are my AT commands inconsistent?

Devices: RPi3B+, USB to TTL CH340, SIM800C GSM module Here are the connection between the USB to TTL and GSM module respectively 5V-VCC, TxD-RxD, RxD-TxD, GND-GND Then I attach this USB to TTL to ...
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0answers
40 views

As an Access Point (WiFi Repeater): how to set up multiple WiFi/SSID

I had successfully set up my raspberry pi as an access point as WiFi repeater followed this guide: Access point as WiFi router/repeater, optional with a bridge. I would like to set up my raspberry ...
1
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1answer
209 views

Ethernet not found while ethernet cable is pluggedd in

I am running AGL (more about it here) image on Raspberry PI 3. I want to send application files from my laptop (where i build it and which has stable wi-fi connection) to the raspberry using scp. What ...
2
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1answer
1k views

Identifying each component on raspberry-pi3B+

Can anyone help me to identify each and every component on pi, like where is wifi chip, which one is processor etc etc?
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0answers
56 views

'No wlan0 interface found' on Raspberry Pi 3B+ Running Retropie

My WiFi has stopped working on my Raspberry Pi 3B+ running Retropie. When I enter the WiFi settings and then select 'Connect to WiFi network' I get this: No wlan0 interface detected I have tried ...
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0answers
129 views

How can Rpi3B configure an I2C PN532 module as a NFC tag, to send data to an Android smart phone?

I'm working on a NFC study. My development environment is as follows. raspberry pi 3 B PN532 NFC : https://www.sunfounder.com/pn532-nfc-module-for-raspberry-pi.html Android Phone (app name :nfc-tools)...
0
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1answer
30 views

Can I power up the PI with the LDO MIC29300

I am using the MIC29300 https://www.microchip.com/wwwproducts/en/MIC29300 in my circuit to generate a 5V signal to my ADC (works fine now) Would it be possible to grab that 5V line and have it ...
1
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1answer
46 views

Bridge WiFi with ethernet on RPi 3B+ without NAT

I would like to bridge eth0 and wlan0 on Raspberry Pi. The connections are as follows: ________________________________________ | RPi ...
1
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1answer
106 views

Can't get the msodbcsql package for Debian 10

I am currently attempting to set up my 3b+ (which runs on Raspbian Buster) to work with a database I have set up on Azure. I already downloaded the pyodbc package, but I can't seem to get the ...
0
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1answer
34 views

How to publish results on the Web from local MQTT non-Internet network?

I'm making a project where I have a local no-Internet MQTT network (scheme below). Devices (except for RPi 3B+) needs to work outside so I can't provide them Internet access. The purpose of RPi 3B+ ...
1
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1answer
62 views

How to convert a Layer 3 VPN to a Layer 2 VPN?

I have been back and forth with some users here about creating a VPN using my Raspberry Pi 3 as a hotspot (OpenVPN client) but being able to bridge it to my other Rasperry Pi 3 at home (OpenVPN server)...
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2answers
43 views

Ambient operating temperature

Will the raspberry pi be able to operate with an ambient temperature of between 50c to 80c? The model we are using is the raspberry pi 3 b+.
0
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1answer
71 views

RPi is not finding packages libapache-mod-php5 and php5

It is not finding these packages. Does anybody know why? It is not finding the installation candidate. Here is the result of sudo apt-get install libapache2-mod-php5 php5: pi@raspberrypi3:~ $ ...

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