Questions tagged [pi-2]
This refers to the quad-core Raspberry Pi 2 (currently only available as a "B" model with Ethernet and four USB ports), with 1 gigabyte of RAM.
1,555
questions
0
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0answers
14 views
2nd ssd installation in NTFS [closed]
I added on my PI2 a 2nd SSD that I want to use to store WINDOWS documents so NTFS partition
I declared it in primary
Device Boot Start End Sectors Size Id Type
/ dev / sdb1 2048 1000215215 1000213168 ...
2
votes
2answers
54 views
Access 192.168.2.x from 192.168.0.x
My Rpi-2 is connected to my home router which assigns an IP address 192.168.0.x to all its clients. I have created a network bridge on this rpi so that it shares the main routers connection with the ...
0
votes
1answer
54 views
RPi will not boot to command line [closed]
My RPi 2 (jessie) still boots to desktop, if I configure CLI in raspi-config.
I also tried what was recommended here:
sudo systemctl set-default multi-user.target
sudo ln -fs /lib/systemd/system/getty@...
2
votes
3answers
59 views
MySql backup database every night
I have service and MySql database on my Raspberry Pi 2B. Yesterday, my SD card in my phone died.
I started thinking about database backup on my Raspberry Pi.
Anybody have any experience with this? I ...
0
votes
0answers
31 views
Load cell changing over time
I'm using a 1kg load cell beam (see example at bottom) connected to a HX711 board then connected to the Raspberry GPIO.
I'm running this Python3 code: https://github.com/gandalf15/HX711/blob/master/...
0
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0answers
25 views
I see two Octopi instances on my Raspberry Pi - why, and how can I stop this?
I installed Octopi on a brand new R Pi straight out of the box, connected it to my Wireless network and to my Ender3D and all went well for a few days, until I started having odd symptoms, such as ...
0
votes
1answer
35 views
Update file to text file on webpage [closed]
(If this is the wrong stack please let me know)
Consider the following: I have a nodejs file called stbot.js. This file I code on my laptop and transfer to my pi via github. However it kinda annoying ...
0
votes
1answer
28 views
How to connect raspberry pi to cellphone tower and communicate with it by Android phone [closed]
I need to communicate to my raspberry pi with my android phone via cellphone tower. For example,a raspberry pi is connected to nearest base station, if i enter into that base station's range i want to ...
0
votes
0answers
8 views
Audio output is changing after I exit the ssh session
My RPi2 has both HDMI and jack output audios.
I would like to use always only the jack output. If I connect via SSH to the pi and select the output in alsamixer (using F6), I can activate the audio ...
2
votes
3answers
96 views
Cannot reach Internet after assigning fixed IP address in dhcpcd.conf
Hardware: Pi 2
OS: Raspberry Pi OS 32-bit
No firewall. Running over ethernet (no WiFi card)
I am following a tutorial to set up a Pi as a file server for home. For this, I need to install Samba. ...
0
votes
1answer
25 views
JAVA development environment for Raspberry Pi 2 or perhaps from the command line?
Hi I'm new to Raspberry (Pi 2) and would like to know
(1) if it's feasible to develop simple JAVA apps in a development environment (Eclipse? Others?) or failing that from the command line.
(2) a ...
0
votes
2answers
38 views
Change the read-only to write [closed]
I don't know why suddenly the following message has started to appear.
-bash: cannot create temp file for here-document: Read-only file system
I can't write files, only read, can't use tab to end ...
0
votes
1answer
24 views
playing music from stream [closed]
I have a raspberry pi 2 model B and a raspberry pi 1 (I think, it doesn't have any version number on it and I have had it for a long time and I don't quite remember exactly the version).
I think the ...
1
vote
1answer
44 views
Installing fresh image of operating system on Raspberry Pi 2
I have an older Raspberry Pi 2 that I'd like to put the latest compatible OS on. The specs of my Raspberry Pi:
Raspberry Pi 2 Model B 1 GB from Canakit.com
It came with a 8 GB SD card.
I bought it ...
0
votes
1answer
35 views
Raspberry Piv2 Camera NoIR displays pink colors in video feed!
I want to ask that I have a piv2 NoIR camera that gives pink colors in a camera stream running live on my Jetson Nano, So I want my piv2 camera to display normal colors then what can I do? Do i need ...
1
vote
1answer
39 views
Raspberry Pi 2B missing RAM
weird thing here. I noticed my Pi model 2B is reporting a smaller amount of available RAM than before (~700Mb vs 1Gb).
[root@raspberry ~]# free -m
total used free ...
-1
votes
1answer
54 views
Raspberry Pi & Motor Control [closed]
I am looking to use raspberry pi to control a motor that has multiple speeds but want all speed and timing to be controlled on the pi. Would the proper setup be a breadboard with a servo motor ...
0
votes
2answers
85 views
Using PWM with RPi.GPIO in Python
Scenario: I want to control a PC fan using the Raspberry Pi. The 4-wire-fan (MGT9212UR-W25) has its own power supply (12V) and can be controled via PWM. I would like to control it with a Python script ...
0
votes
2answers
27 views
Unable to upgrade my model 2B Pi running Jessie
I am trying to update all of the software on my model b pi.
I have cleared as much space as possible - then did df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 6.0G 5.2G 450M ...
1
vote
1answer
35 views
Can Rpi GPIO pins be used to drive a DC motor? [closed]
I tried to GPIO pin to high and I cannot see output voltage. I try every solution but no one works for me.
import RPi.GPIO as g
g.setmode(g.BOARD)
g.setup(16, g.OUT)
g.output(16, g.HIGH)
I look GPIO ...
0
votes
1answer
41 views
Reconfigure pi GPIO default states
The default states (right on boot), on my pi are:
+-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi ...
1
vote
2answers
162 views
How to turn off relay when RPi shuts down
I have connected a relay to BCM 14 and by setting its output to HIGH I can turn it on, making a 220V bulb to turn on.
I use for that the following python instructions:
GPIO.setmode(GPIO.BCM)
GPIO....
0
votes
0answers
17 views
RPI2 with two WiFis works ok for single requests, browsing is impossible
I want like to create a simple WiFi booster with Raspberry PI. So I have RPI2 with two dongles: Ralink (rt2800usb) and Edimax (rtl8812au).
pi@raspberrypi:~ $ lsusb
Bus 001 Device 005: ID 148f:5370 ...
0
votes
0answers
49 views
Problem I2C when using BH1750 photoresistor
(Raspberry Pi 2, model B, V1.1 - buster OS - all updated / upgraded - smbus loaded on)
Hi,
I am quite new to the Raspberry Pi and recently I have hit a brick wall. I am trying to link the Raspberry ...
2
votes
3answers
52 views
connect multiple temperature sensors to rpi
I need to connect multiple temperature sensors to my RPI.
can you, please, elaborate whether/how can this be done with this or this unit?
or can you suggest other unit?
I need to measure temp on the ...
0
votes
1answer
120 views
Can I upgrade my Python version with miniconda on Stretch or do I need to upgrade OS?
Need some advice here. I have an old RPI 2B with ARMv7 Processor rev 5 (v7l) running Raspbian GNU/Linux 9 (stretch).
At the moment it's got python 3.4.3 and a lot of other packages installed with ...
1
vote
1answer
30 views
Raspbian Crashing on RPi2 | full screen goes to one (somewhat random) color when web browser loads heavy page
I've had this strange problem with my Raspberry Pi 2 for a long time now. I have it set up as a sort of third monitor for my main computer. I've installed Synergy and Redshift, then set the screen to ...
0
votes
0answers
19 views
lxde with debian 8 on pi-2
On the old wheezy OS, lxde was provided for the desk top. When you were looking through folders, you had a choice of how to view the files in the folder. (list,small icon,large icon,thumbnails, etc.).
...
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votes
1answer
15 views
RPi 3B (not +) image on RPI 2
I have OctoPrint running on my Pi 3 Ok withou any issues.
Should I be able to boot the same image on a Pi 2?
David
1
vote
2answers
108 views
Getting a NRF24L01 module running with Java
I'm currently trying to make a NRF24L01 module work by using Java. I found this library that makes use of the JNI, but I can't get it to work.
When I try to run the provided example code the ...
0
votes
0answers
32 views
Connecting 3 ultrasonic sr04 sensors, 4 infrared avoidance module to picon zero mounted on raspberry pi 4
Im begginer to raspberry pi, can you help me please? Im trying to connect 3 ultrasonic sensors + 4 infrared avoidance module to picon zero mounted on raspberry pi 4. Currently I have picon zero ...
0
votes
0answers
37 views
OMV on RaspberryPi 4 or Pi 2B+
Am new with raspberry pi and i try to make a nas with my pi using omv, i have both pi4 and p2b+.
This are the step that i follow:
Format SD Card with SD Card Formatter
Download Raspbian Buster Lite ...
1
vote
1answer
278 views
How to Install TP-Link TL-WN823N V2 on Rasperry Pi 2?
I've got a Raspberry Pi 2 I'm trying to install a TP-Link TL-WN823N V2 onto.
pi@raspberrypi:~ $ iwconfig
eth0 no wireless extensions.
lo no wireless extensions.
pi@raspberrypi:~ $ ...
2
votes
1answer
44 views
Creating a network extender
Today I was hoping to setup a network extender. I want it to connect to my router via ethernet, and then share out that connection via WiFi, and stay on the same network. All of the tutorials I looked ...
0
votes
1answer
31 views
RFID and LED Script disables RFID reader until reboot
I have two simple scripts, which work individually. One simply lights an LED, the other reads RFID. Now I want to put them together, but seem to fail.
Once this runs, I can't read RFID anymore until ...
2
votes
0answers
35 views
Can powering a DC motor through the USB ports of my Raspberry Pi Damage the Pi?
I'm working on a project that contains two DC motors and a Raspberry Pi, I do not have other components like Relay, Motor Drivers, transistors etc. I am aware that powering a motor directly from an ...
0
votes
1answer
81 views
Minecraft server not working
I want to run a Minecraft server from a Raspberry Pi 2. I already tried the 1.8.9 and the 1.15.2 versions. Both of them started, as expected. On my computer I tried to connect, but after a while, it ...
2
votes
2answers
178 views
is there an equivalent to the dkms tool in raspbian buster?
I am installing a wifi dongle on an RP2B and the only instructions I can find were for Linux Mint using:
sudo dkms add ./rtl8188fu
I get a command not found. How is this done in Raspian?
1
vote
0answers
28 views
Create website to control RaspberryPi remotely [closed]
I wanted to home automation for a long time. Basically what I want is a website through which I can control my raspberry pi GPIO pins and also read and display data from them on my website.
I will ...
-1
votes
1answer
394 views
How do I add a new source to /etc/apt/sources.list?
Doing $ sudo apt-get update gives E: Some index files failed to download. They have been ignored, or old ones used instead.. After doing some digging i found this Cannot connect to mirrordirector....
2
votes
1answer
40 views
Use Raspberry with two devices that require 3.3v pin
I'm planning a project with an RFID reader that connects to the GPIO pins on a RPi2 and will use the 3.3v pin. Additionally I wanted to add an active buzzer, which also would require an 3.3v pin.
Is ...
0
votes
0answers
43 views
Connect Raspberry Pi with Official Arduino TFT Screen
I've been owning for a few years now this useful LCD screen from Arduino https://www.arduino.cc/en/Guide/TFT and I wanted to ask if it was possible to connect it to the Raspberry Pi 2. The official ...
1
vote
0answers
8 views
KNN Model, cannot import from Windows. What to do for Raspberry pi with Low RAM
I have a raspberry pi 2b with 1 GB of RAM.
I want to train an ML model with about 6k images.
I followed https://github.com/kevinzakka/blog-code/blob/master/knn/knn.py and I have a model that works ...
0
votes
0answers
103 views
Hardware PWM on Raspberry Pi 2 using .NET Core 3.1
I would like to use hardware PWM on a GPIO port to generate RC-5 IR codes with an IR LED.
I read that .NET Core now has PWM support and that the Pi has at least one PWM-enabled GPIO pin, but I can ...
2
votes
0answers
62 views
Raspberry Pi requirement for water outflow detection from pump and switch off motor if no water coming
I have gone through this answer before i post question here,
https://www.hackster.io/ben-eagan/raspberry-pi-automated-plant-watering-with-website-8af2dc
https://mtlynch.io/greenpithumb/
https://www....
0
votes
0answers
23 views
Music player for my raspberry pi2
Is there a easy to use music player for a raspberry pi 2? I tried to download one on Google play, but all it did was highlight the install button. going to youtube and searching all the time takes a ...
-1
votes
1answer
224 views
RPi 2: Could not communicate with wpa-supplicant
Like the title, I updated the Raspbian from Jessie to Buster, and when I restarted my Pi 2 Model B, wlan0 suddenly not associated, I noticed that could be my Wifi dongle problem. But when I get to ...
0
votes
0answers
19 views
Printer keeps printing the same document
I have an HP OfficeJet 8710 printer installed on my Raspberry Pi 4b on Ubuntu 19.10.1. Documents sent to the printer keep reprinting until I cancel them with cups on localhost:631. The same networked ...
3
votes
2answers
59 views
Multiple Wifi networks - can't connect with VNC
I'm using a Raspberry Pi 2 Model B with a wireless USB adapter, Raspbian jessie. Until today I only had the raspy connected to my home network, everything was fine.
Now I have the necessity to bring ...
2
votes
0answers
63 views
Loopback SPI interface not working
I'm trying to do the loopback test for the SPI interface on my raspberrypi model 2 B V1.1, by following the intruction on this website : https://www.raspberrypi.org/documentation/hardware/raspberrypi/...
