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.

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function button.is_pressed from gpiozero do not work

Im working on a university project with raspberry and gpiozero. I need to manage the button response to take diferent actions. The problem is that de function button.is_pressed its always true (even ...
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1answer
719 views

openelec to libreelec update not working

My attempt to upgrade OpenElec 7 on my RP2B to LibreElec is not working as expected. I currently have OpenElec 7 on my RP2B. I followed the instructions to upgrade to LibreElec by downloading the ...
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4answers
482 views

Unable to create a bootable Raspbian Lite SD card with the `dd` command

So after much searching, trail and error, I was finally able to create a bootable SD card for my RPi2 Model B. Unfortunately, I did it in a way that I did not want to and I wanted to know where I have ...
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1answer
1k views

Touch screen works in X, not in Kivy

I have the eleduino 7" touchscreen. The image with pre-installed driver they ship it with disable the GPIO pins. Touchscreen works in Kivy though. I was helped here by TMWILSON26 who referred me to ...
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1answer
689 views

ultrasonic sensor stops after giving some reading when running in thread on tornado websocket python

I am using Ultrasonic sensor to get reading and am using python program for getting reading. And am using Raspberry pi for this. when am running python program independently its giving me reading ...
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1answer
529 views

sudo pip install packagename not working

sudo pip install packagename not working... I am not able to install python package using pip.
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1answer
30 views

Unable to reset password on Raspberry Pi (Raspbian Jessie)

I'm trying to follow the directions in https://howtoraspberrypi.com/recover-password-raspberry-pi/. (For future reference in case that tutorial disappears, here is the steps up to the point which I ...
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2answers
62 views

macos x installion rapsberry pi

Hi I just installed my Pi according to this tutorial https://www.youtube.com/watch?v=4Fe1C1D5DhU but I got just one MacBook so as I put the SD card back, it shows this error The disk you inserted ...
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3answers
10k views

White noise through audio jack

I have been using Sonic Pi recently and have been annoyed by a persistent stream of white noise. This has happened on both Raspbian and Ubuntu MATE 16.04 for Raspberry Pi, using SENNHEISER MX356s. Is ...
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2answers
722 views

Bridge and NAT with Raspberry problem

I have a RPI3 with 2 external WLANs (wlan0 and wlan1) which work perfectly as WLAN Repeater (wlan0 gets signal from router) and wlan1 is set as hostAP...done via NAT iptables. no bridge in interfaces....
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1answer
694 views

Huawei E3372 force me to show a webpage on my raspberry pi 2

I have some Raspberry Pi 2 that launch a webpage on Epiphany at startup. I get internet connection with some 4g Modem Huawei E3372. Those modems are setup to launch 192.168.8.1/html/home.html at ...
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1answer
311 views

Troubleshooting Ethernet: Network is unreachable

I have a Raspberry Pi 2 Model B V1.1 running Raspbian (I'm not a confident Linux user, but I understand this is the "Jessie" distribution) and have been using it to install matplotlib and other MATLAB-...
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0answers
353 views

Windows 10 IOT Core, Fails to connect using powershell (Objectnotfound measure-object:string)

I followed the steps provided by microsoft to flash windows 10 on a SD card. inserted this into the raspberry pi 2. It boots just fine showing me the defaultApp. I am able to connect trough ssh and ...
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0answers
281 views

How to configure duplicate screen on a Pi?

I have a Raspberry Pi 2 connected with a TouchScreen. I also connect another external display via HDMI. Goal I've been trying to make my external display show as duplicate mirror the one on the ...
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26 views

Raspberry pi wireless WiFi

So I had an idea and wanted to know if it was possible and how to tackle it. So I was thinking if I had a raspberry pi plugged into my router at home via Ethernet cable, could I create some sort of ...
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2answers
2k views

Stepper motor using L298 motor driver

I was trying to run stepper motor from my raspberry pi model 3 B. I used the following tutorial - https://www.raspberrypi.org/forums/viewtopic.php?f=49&t=55580 I have followed various other ...
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1answer
554 views

Anyone get direct esp-now to raspberry pi (or other linux wifi device) working?

It would be nice to be able to use raspberry wifi to receive ESP-NOW messages directly and eliminate another ESP-to-PI device to manage. I think this is where @ Alexandr Zarubkin was going but I don'...
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1answer
510 views

Wired transfer of live video between 2 raspberry pi's

How can I send a live video from a Raspberry pi to another Raspberry pi, using an optical fibre, not using WiFi or other wireless communications? I need to send a live video recorded by a camera, ...
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2answers
2k views

Setting up RaspAP

I have just downloaded RaspAP onto my Pi 2 Model B. Upon rebooting, I am now able to see the "raspi-webgui" network on my mobile phone. However, when I enter the default password ChangeMe, it does not ...
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1answer
43 views

Pi 2B won't update TeamViewer

I've recently tried to log into my Raspberry Pi (2B with 1GB running Jessie) using TeamViewer and found that my TV software is out of date. I needed to update TV to version 14. When I downloaded ...
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1answer
112 views

Troubleshooting PiVPN connectivity outside of LAN

I've set up pihole w/ cloudflared + pivpn on a raspberry pi 2b+ Everything seems to be working properly when connected to my internal WIFI (cable modem / router combo) on an Android client using the ...
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1answer
516 views

how to use xrandr tool for dual screen

I'm working on Raspberry 2B with Raspbian Strech. I plugged a USB / DVI adaptator which is listed in the lsub command : pi@raspberrypi:~ $ lsusb .../... Bus 001 Device 006: ID 17e9:4301 ...
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1answer
34 views

Raspberry pi ds1307 integration

I would like to integrate ds1307 clock module as a part of my 'garden automation project' to raspberry pi. The concept of the project is the servo will rotate in a specific time. So should I ...
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0answers
446 views

Changing bluetooth class to act as a hands free device and car audio

Good morning folks, I have been using this tool to quickly configure my Pi2 as a bluetooth audio link to my camper van, it works brilliantly. My question is regarding changing the class of the ...
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1answer
92 views

Detect multiple button presses on circuit

I am totally new to using the Raspberry Pi. Right now I am trying to determine if a Pi could be used to solve my problem or not. I am trying to detect multiple buttons pressed. With this I also want ...
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1answer
34 views

Remotely Connect to Pi through VNC Outside of LAN Network

I want to be able to remotely access the desktop of my Raspberry Pi 2, running Rasbian Full, from outside of my LAN network. I've been able to easily connect on my network, but I want to be able to ...
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0answers
39 views

How to Type Unicode Characters [closed]

I want to show if a code is locked or unlocked and a fun way I thought of would be to use a unicode character. How would I type Unicode characters such as “🔒” (U+1F512), or is that beyond the pi's ...
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3answers
2k views

How to generate accurate PWM signals

I've ran into a bit of an issue with the Raspberry Pi's ability to generate accurate PWM signals for servos. My problem with this is that the servos jitter because of this lack of accuracy. Is there ...
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0answers
24 views

Raspberry Pi 2b won't produce HDMI output, both LED's on

I have a Rasberry Pi 2b running raspian. It was previously working, however whenever I try to turn it on both LEDs come on prmenantly but nothing is outputted on HDMI. My TV does change from saying ...
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1answer
200 views

Raspberry PIs for NOC displays [closed]

We want to serve NOC information on 3 displays in our office, and are considering using Raspberry PIs for that (3x http://www.amazon.de/Raspberry-Modell-Quad-Starter-Bundle/dp/B00T7OHE9A/). Our NOC ...
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1answer
96 views

Speed up SPI transfer

So I need to transfer a byte on the spi interface on raspberry pi. Here's my code in python import spidev import time import binimp fhandle=open("white.txt") initial=binimp.extract(fhandle,'192','...
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13 views

bridge repeater unsure what to call it

ok here is the set up router 1 ~~ pi ~~ router 2 ~~~ rest of the home router 1= public wifi (aka library) i need the rpi to pick the signal up using a [Alfa Long-Range Dual-Band AC1200 Wireless ...
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1answer
580 views

Unable to ping Google.com from raspberry pi 2 , also error during sudo apt-get update

I have Pi 2 installed with raspberries OS All the setting as default and its connected to WiFI, signal strength looks good. Here its : However, I'm unable to ping Google. I have referred this ( ...
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2answers
105 views

Headless Connection to Raspberry Pi [duplicate]

I have tried to create a headless connection to my (new) Raspberry Pi, since I do not have a HDMI cable at home. However- after trying everthing I have found as suggestions on Google etc.- I just ...
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1answer
31 views

I'm trying to make a shell script that can mount a exFAT drive

Hi I am trying to make a shell script that can create a directory (/mnt/drive) and mount a exFAT drive in that directory on my raspberry pi 2. The problem I am having is that when I try to run the ...
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1answer
77 views

At what instances do we use the Board mode and BCN mode in Raspberry Pi?

I know about the two modes of working in Pi using python, Board and BCN. However, I am really confused as to the instances or situations where I should use them. An example demonstrating their use ...
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1answer
94 views

Serial read from arduino not working properly

I am trying to read analog read from ardunio connected to my raspberry pi. Following are my raspberry pi and arduino codes. Raspbery pi: import time import serial ser = serial.Serial('/dev/ttyACM0'...
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1answer
24 views

Connecting a Compaq CQ56 screen to a raspberry Pi

I've got this laptop in pieces, a Compaq CQ56. I want to take the screen and connect it to a raspberry Pi to make a interactive mirror like so many tutorials show. On the back of the screen it has ...
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1answer
42 views

Raspberry pi 2 model b+ odd booting issue

I ran into an odd issue with my raspberry pi and was hoping someone could help me point in a right direction here. I have a model b raspberry pi successfully running latest raspbian (downloaded from ...
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0answers
19 views

Use Raspberry Pi 4B as wifi access point and wifi client at same time to function as an extender/repeater [duplicate]

Looked at older threads and found that none of them were working properly and was hoping for an updated tutorial. My main issue is that my Model 3 won't connect to a certain wifi network, and was ...
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1answer
57 views

Can't connect via SSH to RPi2

I have searched for old topics but I can't find anything that could solve my issue. I have installed Ubuntu MATE on SD card and created the ssh file on the boot\ directory. I connect the RPi2 ...
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1answer
82 views

Can't connect PI through wifi but ethernet routing is working

I want to access my RPI using SSH, so connected my PI to wifi router via ethernet and i'm trying to access this via Laptop connected through wifi on the same router. When I search for IP using ...
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1answer
23 views

Raspbian 4.13 on Pi2 - Mouse issues

Had model 2. just loaded the latest Raspbian 4.13. attached a wireless HP mouse. it is gliding on the screen, slow and behaving like it is drugged. this mouse works fine on other machines. This is ...
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1answer
58 views

Raspberry pi + L298 H bridge motor speed reduced when battery circuit shows 50%

I made a raspberry pi car. The pi is powered by two 18650 (Breewell New Multipurpose Flat Top 18650 Battery 2000 mAh 3.7 Volt Lithium Genuine Rechargeable Battery -Pack of 2 https://www.amazon.in/dp/...
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1answer
62 views

Wireless USB Adapter not working on Raspberry Pi 2

I am trying to install a Wireless USB Adapter but Raspbian can't detect it. tp-link TL-WN725N | Raspbian 10.1 | Raspberry Pi 2 Model B I think the drivers were installed correctly, but I just ...
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1answer
47 views

Permanent & Safe Powering of Raspberry Pi in Confined Space

I have a small project that involves the automation of the lights in a room using a Raspberry Pi and a set of four relays. All of the software and hardware is operational, and it is ready to be ...
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1answer
197 views

Error when installing Periscope

I've created a media system with my Pi 2, but when I install Periscope using sudo pip install periscope, I obtain this error:: Requirement already satisfied (use --upgrade to upgrade): periscope in /...
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1answer
37 views

OnionPi - No internet connection after adding Iptables rules

I need some help or advices since I've not know what could I do to fix this issue. I've built an onion pi following the adafruit tutorial. This basicly is a wifi hotspot that routes all traffic ...
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1answer
36 views

GPIO.input(24) is coming back True when it shouldn't be (false button presses)

I have a button in a working circuit. Within sys/class/gpio/gpio24, value changes properly (it becomes 1 when pressed down, 0 otherwise). When I use GPIO.setup(24, GPIO.IN) within python, GPIO.input(...
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1answer
80 views

Raspberry pi 2 model b system clock ppm

I have a Raspberry Pi 2 model B and a RTC (precision 1 ppm) hooked up with, without Internet conneciton. When the RPi is power off is the RTC the responsible to keep the current hour but when the RPi ...