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2
votes
1answer
42 views

Does directly connecting pins fry the Pi?

As a followup to this question: Can I safely connect two GPIO pins to each other (ie. for testing purposes)? And can I safely connect an input pin to either +VDD (3.3 V) or to Ground? Or do I need a ...
0
votes
0answers
7 views

Fail to boot without udev hook [closed]

I was trying to make a minimal initramfs when I remove udev hook, the raspberry cannot mount mmcblk0p2 as root. It seems it was trying to mount before the device is initialized, how to fix this?
0
votes
1answer
21 views

Remote access SSH with PIVPN on RI3

I have a raspberry3 to my workplace and it is connected to internet by the LAN network. I want to access to the pi-hole interface remotely from my home and by ssh for any configuration on it. I ...
0
votes
0answers
37 views

Issue with I2C communication with raspberry pi and arduino

I am new to I2C communication and python coding so please bear with me if my question is naive or my code looks very bad. I am able to achieve I2C communication between raspberry pi and arduino and ...
0
votes
0answers
33 views

How to set the USB port name in raspberry pi 3?

I'm using 2 ports such as /dev/ttyUSB0 and /dev/ttyACM0, but when I remove one of this ports and put it again, the port's identification changes. How can I force a name to my fisical port in order to ...
1
vote
1answer
23 views

How to fix duplicate console when using TFT monitor?

Using a 2423 PiTFT monitor from Adafruit. Trying to set up my Pi so that it displays a console without auto-login at boot while allowing me to run chromium-browser using xinit. I followed the guide ...
0
votes
1answer
38 views

Pi 4 insert and remove usb

I have 2 questions - apologies if they are trivial. a) when I shutdown my pi4 the led goes out but comes back on soon after. Is this ok/ normal? b) I use the GUI and have had a USB stick corrupted. ...
0
votes
1answer
45 views

RPi 4 not connecting to Wifi

I connected my RPi 4 B with Raspbian OS to my home network successfully. After rebooting, it just did not want to connect again. I have re-installed Raspian without any success. It does however, ...
0
votes
0answers
31 views

What does amixer cset numid=3 3 do?

In order to solve missing audio via HDMI with Raspberry Pi 4B (Raspian Buster) I came across amixer cset numid=3 2 which didn't do the trick for me. But randomly I checked numbers from 0 to 4 and ...
0
votes
1answer
32 views

How to install gcc 7 and g++ 7 on NOOBS_v3_2_1 version..?

The preinstalled gcc version on Noobs 3_2_1 is 8.3.0. I would like to downgrade or install 7.4.0 version on it. When i try to run sudo apt-get install gcc-7.4 I get Below error. E: Unable to ...
0
votes
0answers
19 views

Distorted sound using VOIP and ReSpeaker HAT

I am using the ResSeaker HAT on my raspberrypi 3. After installing the drivers im able to record the sounds using the inbuilt mic and play it from my speakers (using the command arecord -f cd -Dhw:1 | ...
0
votes
2answers
40 views

Why are some services only listening on IP6

I have previously asked a question Cannot remotely connect to pigpiod (now deleted) but never resolved the issue. This is a more generic question. sudo ss -lntp State Recv-Q Send-Q Local ...
0
votes
0answers
35 views

PWM without root access (Navio2)

We use the Navio2 sensor hat from Emlid. These boards are used for a class where students develop flight software (not using Ardupilot or PX4). We roll our own framework which provides some basic ...
0
votes
0answers
21 views

Raspbian keeps erasing from sd card

I left a raspberry( which I'm connected to using ssh on PUTTY) to run an apt-get dist-upgrade. After ten minutes the raspberry connection has been aborted and I was unable to reconnect to. Almost ...
1
vote
0answers
41 views

RASPAP and Pi-Hole

I have RPI 3B+ with lastest version of raspbian and I have installed RASPAP (default settings) and it works very well. I have internet :) IP: 10.3.141.100/24 GW: 10.3.141.1 Today I installed Pi-Hole, ...
0
votes
1answer
90 views

Raspberry pi 4 hdmi screen is blank

I have a raspberry pi 4 using the latest Os but I cant get anything to display on my monitor the monitor I am using is MCT101HDMI-A I have tried another monitor and it display works so I know nothing ...
-6
votes
2answers
53 views

How do I connect Raspberry to power? What kind of cord would I need?

I am looking forward to buying Raspberry Pi 3 from Amazon. I want to test Windows 10 IoT. I am wondering what kind of cable do I need to connect it to power. How much energy does it need? Should it be ...
1
vote
0answers
24 views

How to compile firefox nightly on Raspberry Pi 3?

I am running ArchLinux ARM on the Raspberry Pi 3 model B. I would like to install Firefox nightly on the raspberry pi 3 model B. I can find similar questions on the internet, but most of the answers/...
0
votes
0answers
36 views

Two Raspberry Pi on one router

I have the following: A router with external ip address 209.xx.xx.xx. This router forwards to the ip address of the first rpi (rpi#1) (ports 80 and 443 to 192.168.1.170) and a random port (1234) to ...
0
votes
0answers
13 views

Pairing Rpi and windows PC for bluetooth over serial

I am currently working rpi 3B+ and windows system. thing is I want to use bluetooth over serial to windows PC. Before that happens RPI and Windows must be paired first, that is not happening at the ...
0
votes
1answer
69 views

Connecting multiple sensors to Raspberry Pi 4 B

I have a Raspberry Pi Project in mind but I'm completely new to this matter and have literally no idea. My plan is to create a transportable Weather Station (which includes a temperature sensor, air ...
0
votes
0answers
24 views

Unable to ping from the Revolution Pi Connect (Raspberry pi based IIoT device) to PC?

Before going ahead what is the problem I am facing let me give you a hint about the Revolution Pi Connect an IIoT device based on Raspberry pi:https://revolution.kunbus.com/tutorials/uebersicht-revpi-...
0
votes
0answers
36 views

How can I create an encrypted container on a Raspberry Pi 4?

I'm looking for a tool similar to Veracrypt, Boxcryptor or Cryptomator which runs on the Raspberry Pi 4 (armv8). The above mentioned apps don't seem to support the arm architecture (or at least not v8)...
1
vote
2answers
20 views

Start smartcard service at startup in a raspberry pi

I have a raspberry pi connected to smart card reader (OMNIKEY 3121). I installed all driver and libraries needed. In order to use the card reader it is necessary to activate its service: sudo ...
0
votes
0answers
13 views

respeaker HAT and voip using raspberrypi

I am using the respeaker HAT on my raspberrypi 3. After installing the drivers im able to record the sounds using the inbuilt mic and play it from my speakers (using the command arecord -f cd -Dhw:1 | ...
0
votes
0answers
15 views

X Error of failed request: BadAlloc (insufficient resources for operation)

I'm running a GUI programming (Tkinter) based application program for reverse vending Machine on raspberry pi with raspbian 8 jessie OS. The program takes user input as language selection, mobile ...
0
votes
2answers
55 views

Using a raspberry pi to control a model of the USS Nimitz, and possibly using an arduino to read PWM for the pi

I want to create a python equivalent of the RCPulseIn library for arduino that does all the same functions of the library. I have written up a code that has lots of errors, but has sort of a framework ...
0
votes
1answer
50 views

Old IP keeps coming back

I got a new router, and my raspberry pi keeps adding the old IP to my system everyday. I have tried assigning a static ip, flushing the interface, making sure that the old ip is in none of the files, ...
0
votes
1answer
39 views

Configuration UART on pi 4

I am trying to configure the UART on the Pi 4. I have entered enable_uart=1 into /boot/config.txt and I have sudo systemctl disable serial-getty@ttyS0.service and removed console=serial0,115200 ...
1
vote
1answer
17 views

Dash/Plotly webserver not working on raspberry Pi, working on mac

I am trying to chart real time data from a Raspberry Pi to a web server. In this case I am using dash (https://dash.plot.ly/live-updates) to do this. I am currently testing my dash web browser on ...
0
votes
0answers
21 views

New to Pi I need to connect a device via serial communication, how do I teach myself?

I've been asked to connect and control a finger-sensing device to a Raspberry PI. There is a protocol to respect called OSDP. It supposes a serial connection on top of RS485. I'm a seasoned C/C++ ...
0
votes
1answer
25 views

Login screen stuck in a loop

I have tried several ideas such as: chown pi:pi .Xauthority choxn -R pi /home/pi and I have deleted .Xauthority But my pi keeps returning to the Shut-Down / Log-In screen no matter what I do. I ...
1
vote
1answer
25 views

Raspberry discoverable and pairable without pin keep disconnecting

I want to send bytes to my raspberry pi 3 through bluetooth with an application on my smartphone. Bluetoothctl works fine, pairable, discoverable, agent NoInputNoOutput all work. However, my phone ...
0
votes
0answers
16 views

Raspberry Pi 7" Display White Screen

Good evening all. I have been working on a project involving the official Raspberry Pi 7" touch screen display and now it has spontaneously failed and will only display a white screen. I have ...
0
votes
1answer
24 views

Headless RP 4 setup for Mac; getting “mkstemp: No such file or directory found”

I'm brand new to Raspberry Pi. I bought a RP 4 kit from Amazon with the goal of creating a NAS Box to access external hard drive files over my Wifi. I have a MacBook Pro, running Mojave 10.14.6 Steps ...
1
vote
1answer
29 views

PIGPIO problem with delay on scripts

I am trying to run an old Raspberry Pi 2011.12 as a server to control a RGB LED strip. To this I am using PIGPIO since this is the best solution (RPi.GPIO is software based, which creates flickering). ...
0
votes
0answers
45 views

Waveshare SIM7600E-H no wwan0 interface when connected to Raspberry Pi 4 model B

I have connected the new Raspberry Pi 4 model b with the waveshare SIM7600E-H 4G HAT. The os is Raspbian Buster Lite. The configuration I use is the following: 1) The jumpers are placed in the middle ...
0
votes
0answers
31 views

Unable to format SD card after using it for Raspbian

I have a Raspberry Pi 3B+ that I want to make a little home server out of. I decided to start with the current raspbian build, which as of writing was the one released 2019-09-26. I used Balena ...
2
votes
1answer
29 views

How to bridge wlan0 to eth0 without a static ip?

I'm having internet issues in my dorm and I can solve them by bridging the dorm's WiFi (wlan0) to ethernet (eth0). I've read a lot of tutorials online, but most of them are outdated or not applicable ...
0
votes
2answers
61 views

Can i install old raspbian images on raspberry pi 4

I want to buy a raspberry-pi 4 and for some reasons i need to install an old linux kernel on it (for example raspbian with linux kernel 4.14) I want to know that can i install old raspbian images on ...
0
votes
0answers
26 views

raspberry pi 4 doesn't boot [duplicate]

I have a raspberry pi 4 which was working and suddenly turned off and ever since isn't booting up. Red and Greeen LED is continously on.(Not blinking) I have tried another memory card with differnt OS ...
1
vote
2answers
48 views

Local network between 2 RPIs over GPIO

I’m planning a project where a RPI zero will be controlling a flying vehicle. It’s going to have 2 (maybe 3) cameras as an input. These will be connected over USB. I’m aware that processing the ...
0
votes
0answers
19 views

Green light always on after a while for Raspberry pi 3 Model B V 1.2 2015

I boot the raspberry pi correctly, the red light is on (solid light) and the green light blinks. After a while, (it can be few hours or a couple of days) the green light stays solid and it does not ...
1
vote
1answer
47 views

Begineers - I need dual Wifi on Raspberry 3b

I describe the situation which i need help. I have installed raspbian with RASPAP. I need from my raspberry to deliver 2 wifi ssid: Work, not DHCP, transmit the ethernet on wifi for workers.192.168....
2
votes
1answer
37 views

How to connect EEPROM to Raspberry Pi 3?

I was wondering on how to connect an EEPROM chip to the Raspberry Pi 3? And any suggestions on which EEPROM chip model is best to use with RPi3?
0
votes
0answers
26 views

Power on Rpi 3B+ from shutdown with only GPIO SCL (weird)

I was searching for ways to power on my rpi from shutdown (o halt) mode, then I noticed somewhere else that shorting SCL and GND will turn on... Well in fact, I tried this and my RPI turned on ONLY ...
1
vote
1answer
44 views

Rpi4B can control either one of two L298N modules, each driving two motors, but not both modules at the same time, why?

I'm using a pi 4 for a rover I want to build and I have 2 L298N drivers. I connected them using a breadboard to my pi so I don't need that much GPIO pins but only one pair of motors is working and ...
0
votes
2answers
35 views

txd and rxd pins with same numbers at the end of name

So I was looking at alternate functions of the GPIO pins of the Raspberry Pi 3b+ and found that some GPIO pins do support txd and rxd alternate functions. However some are named txd0/rxd0 and some are ...
2
votes
1answer
32 views

Unable to set GPIO even as root

$ echo "1" > /sys/class/gpio/gpio17/value echo: write error: Operation not permitted Doing sudo -i to log in as root ends up the same. $ ls -ll /sys/class/gpio/gpio17/ -rwxrwx--- 1 root gpio 4096 ...
0
votes
2answers
37 views

using GPIO pins as TX/RX pins

I'm working on a project that needs multiple TX/RX pins, but the Raspberry Pi that I have only has 1 of these pins. Can I use the GPIO pins as TX/RX pins? Or is there an adapter available somewhere? ...

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