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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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SSH from iPhone into RPi 2B on the go

I have a RPi 2B and Zero W. When I’m on the go I want to ssh into the 2B but I have no WiFi adapter. So I thought I can connect the 2B and the Zero using a Ethernet cable and adapter (for the Zero). ...
Teriff's user avatar
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14 views

Sending Drone Object Location via XBee with Raspberry Pi and GPS

I’m working on a project where I have a drone that have a Raspberry Pi equipped with a camera, GPS and XBee modules. right now I’m making the drone get the location of an object when it recognize one ...
jedlaoui's user avatar
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1 answer
23 views

Raspberry Pi won't autorun program without an HDMI monitor plugged into it

I can't figure out why my Raspberry Pi will not auto-run a program on startup. I've tried everything that I can find. The Pi boots and runs the program fine with a monitor plugged in, but as soon as I ...
sam w's user avatar
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18 views

How do I find my SSID for LAN on my raspberry pi 2?

-Raspberry pi 2 -Trying to install a 3dprinting OS -needs SSID for LAN How should I find this?
Royal Julz's user avatar
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1 answer
44 views

Trying to understand the under voltage issue

Using this script to provide a power report, I am getting the following while powering the Pi with iPhone power brick and the official Raspberry Power supply brick: -- using official Raspberry Pi ...
AngryHacker's user avatar
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44 views

Failed building wheel for av of OctoPrint-CrealityCloud-With-Video plugin

i've installed the OctoPrint-CrealityCloud-With-Video package inside a RPi 2B based on octopi-1.0.0-1.9.3-20231009154319. When i install it from the Plugin Manager i faced this issue and the plugin ...
Kowa92's user avatar
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69 views

Using a Raspberry Pi as a Remote Screen for Windows

My current screen setup in windows consists of my Laptop screen and a HDMI screen. Since I have extra screens laying around, I wanted to know if I can use my PI to connect to a monitor remotely (hdmi ...
user160049's user avatar
1 vote
1 answer
113 views

Is there any chance to update an extremely old rmpi system to a specific version?

I have a software image file that is used for running system on raspberry pi model B and ~50 microcomputers that are running on it right now. I need to somehow update this old pile of rust to a ...
SomeRandomDude111's user avatar
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19 views

Creative ideas for truck display

I have an older F250 with an overhead console that the 28 pin lcd has went out on. The lcd displays compass, miles till empty, ect. It has a 28 pin display from Futaba. Any creative ideas on putting a ...
GeorgiaDawg's user avatar
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1 answer
74 views

MPC output problem on Headphone output

I have a misconfiguration of my MPD daemon on Raspbian Buster with Raspberry PI 2B. Alsa is configured as follows: pi@Wecker:~ $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: b1 [...
EV97Freak's user avatar
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39 views

Raspberry PI 3b+ few GPIO pins are not responding for some duration and gets recovered automatically itself after either few hrs or days in worst

In my current application, I have interfaced 9 US100 sensors to Raspberry Pi's GPIO pins. Pins mapping is as follows: GPIO_Trig_list =[2, 17, 10, 5, 19, 14, 23, 8, 20] GPIO_Echo_list =[3, 27, 9, 6, ...
Arinjay Motule's user avatar
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21 views

hooking a pi up to a kvm switch to be able to switch between pi/pc

has any1 been able to hook up a pi 2 and get it running with a KVM, i've done some research and I didn't see anything like what I want to do
taran agnew's user avatar
-1 votes
1 answer
44 views

ttyAMA0 serial port error

I'm trying to get gps data through ttyAMA0 serial port. Sometimes I could get gps data but I also get errors such as OSError Error11 resource unavailability. It used to be working but I get errors ...
Jooseok Lee's user avatar
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27 views

Connect Foot and palm switch to Raspberry pi

We made a project using a raspberry pi and 4 arcade buttons (https://thepihut.com/products/massive-arcade-button-with-led-100mm-white) sadly there were not robust enough, it is used inside a ...
Vitrion B.V.'s user avatar
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78 views

camera stopped working on rpi2 with buster, device is not detected, hardware has been checked

raspistill -o image.jpg returns mmal: Cannot read camera info, keeping the defaults for OV5647 mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM) mmal: ...
Ajned's user avatar
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59 views

How is it made that NIC has name eth0 not usb0?

Raspberry Pi network card is internally a USB card. Why then it has name eth0 and not usb0? I need to find a code, which is responsible for this. I am simulating Raspberry Pi with QEMU and having a ...
Dims's user avatar
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Building a LIRC configuration from RemoteMaster project files

I'd like to use an RPi to send IR codes to an old Balboa hot tub that doesn't support a Wifi module. I've bought the original IR receiver that plugs into the hot tub's motherboard. However, I don't ...
Diwi's user avatar
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1 answer
156 views

why raspberry pi got two 5v pins? [closed]

If I understand it correctly: the two 5v pins are inner connected, so what's the purpose to design two 5v pins, please share a scenario that requires to use both 5v pins, thanks
LIU YUE's user avatar
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1 vote
1 answer
203 views

How to program remotely on horribly slow Pi-2

I have an old RPi 2 B which I've loaded the latest version of Raspberry Pi OS Lite onto. I'd like to use it to make an IoT device using an TFT LCD screen to show information like the weather and my ...
Atom's user avatar
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35 views

How to Read Result from Two Different USB Ports and Differentiate Them

I have a project where I control to access door with a Raspberry Pi. I want to connect two USB RFID readers to the Raspberry Pi. based on the read from each one, it will open a specific door. Right ...
Shwan's user avatar
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-1 votes
1 answer
176 views

How to install Ubuntu server to Raspberry Pi 2 using BTRFS?

I would like to install a Ubuntu server to my Raspi 2's SD CARD, but using btrfs file system. The preinstalled Ubuntu images do not help in this case, how would you do this?
Seathorn's user avatar
1 vote
1 answer
169 views

SPI loaded but MOSI as input

I wrote a script to display data on a led matrix, controlled by a few GPIO for line selection and SPI to feed data for this line. This was working perfectly 2 days ago, I let the script display random ...
low's user avatar
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1 vote
0 answers
71 views

How to wire SIM900A SP+ and SP- with Raspberry Pi to record incoming call

I have a "Raspberry Pi (2 Model B rev 1.1)" wired with "SIM900A using a "USB to TTL module". Send/recv SMS, make/accept/hang calls functionalities are working as expected ...
Stupid's user avatar
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1 vote
0 answers
25 views

power failure - 2b1.1

a few weeks ago, my pi 2b failed to detect usb wireless adapter. yesterday, red power indicator flashed sporadically, but booted. today, it failed to boot. checked connections, tried different ...
Edward Clark's user avatar
2 votes
2 answers
74 views

Pi 2 getting incredibly hot

My raspberry pi 2 CPU is getting burning hot, even when just starting up. It first wouldn't display aswell, but I rewrote the 32 bit os onto the SD card and now it does display. But it still is ...
Floris's user avatar
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2 votes
1 answer
77 views

Raspberry Pi undervoltage strange issues

So I have an old Rpi2 B, and I was getting an undervoltage error trying to run OctoPrint on an old bundled PSU. I swapped for a 5V/4A PSU with the same error, I only have the power supply and an ...
Josh's user avatar
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3 votes
0 answers
63 views

RPI(2) Bare Metal: does GPU support text mode and what is the default video mode?

I'm struggling with trying to find any information about text-mode capability in Raspberry Pi. I'm reading about decompression, 3d, etc. fancy features but I'd like to learn about fundamentals: Is ...
ardabro's user avatar
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1 vote
0 answers
81 views

Interfacing Saitek Megamaster MX-530 with Raspberry Pi

I found out an old Saitek Megamaster MX-530 joystick that I used to play games on old Pentium machine with Win XP. I've tried to used on modern system buying midi/game port converter (25 pin) to USB ...
Sbraaa's user avatar
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1 vote
1 answer
1k views

Looping video on startup

I have keyboard and screen connected to my raspberry pi. I want to try running a video on a loop on startup (I do not want to install desktop environment to do so). In the past I have successfully ...
Quillion's user avatar
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0 votes
1 answer
148 views

How to detect if SD card is corrupted using metadata Checksum?

I have enabled metadata checksum in my Rpi 2 using this. Is there any way to use this metadata checksum to detect if the sd card is corrupted?
Saugat's user avatar
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2 votes
2 answers
7k views

No Wireless Interface Found when using wifi adapter TL-WN725N

I have a problem, I'm using a wifi adapter TL-WN725N. On the display when scanning, it says "No Wireless Interfaces Found". I've used the solution from the website: https://gist.github.com/...
renaldyks's user avatar
0 votes
1 answer
275 views

(raspberry pi 4) instead of pip install all the function (like pandas and json), but we can still use them in script import

system: raspberry pi 4 model B, 32bit, linux run python Is a dumb question, I was planning to read data from MongoDB to excel' and also read excel toMongoDB'. Overall the .py scrip/code is fine and ...
44 chuang's user avatar
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-1 votes
1 answer
162 views

How can I connect a dht11 that uses digital input while also using an ADC converter and the SPI bus

The source code I have below works for a two analog voltages(water level detection and temperature sensor). The code is set right now for just these two to run and it does work. If there is a problem ...
Nate's user avatar
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1 vote
1 answer
134 views

Accidentally deleted important files from MELOPERO RP2040

I am a beginner in this field... I was trying to edit files from VS Code and I accidentally deleted all the files from my MELOPERO Cookie RP2040 and I cannot access it anymore... Can anyone help me? ...
iamnotaku's user avatar
0 votes
0 answers
23 views

Possible to connect non-local rasberri pis to create mesh network?

Hello I am new to Raspberry Pi's and need to use them for my school project. Each of my group members were given one raspberry pi from the school, and we wanted to make a mesh network with them for ...
madlee's user avatar
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0 votes
0 answers
365 views

Install Mediapipe for Raspberry Pi 2B

I'm a high schooler looking to use the cvzone module, which requires mediapipe, for my project. However, I'm getting errors in importing and I wanted to know if it is even possible to download ...
Thomas's user avatar
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0 votes
1 answer
427 views

How is Ubuntu "64-bit ARM" offered for Pi 2?

Canonical offers Ubuntu for "64-bit ARM" and gives "Pi 2" as an example of a compatible platform. Raspberrypi.com says the Pi 2 is "32 bit". How does that work?
Andreas's user avatar
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0 votes
1 answer
274 views

32 bit Ubuntu Server 22.04 LTS lower GPU Memory

I have a raspberry pi 2 with ubuntu sever installed and need to know how to lower the gpu settings from 64 megs to 16 megs. Ubuntu Server does not come with raspi-config installed.
zen699's user avatar
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0 votes
1 answer
108 views

Raspberry pi 4 is not booting with Disk image that is working on Raspberry pi2

I am new to this project. The project was developed in 2015 using Raspberry pi2 and a 7' touch display. The disk image works perfectly on Raspberry pi 2. I tried to flash the disk image to an SD card ...
MKZ's user avatar
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1 vote
0 answers
158 views

RPi 2 GPIO UART can send data to Teensy, but can't receive

I am trying to send data between RPi 2 (model B) and Teensy 3.2 using the GPIO on the Pi (GPIO 14 and 15) and Serial2 on the Teensy (pins 9 and 10). The problem is, I can only send data from the Pi to ...
Ron's user avatar
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1 vote
0 answers
115 views

Raspberry Pi 2 model B HDMI no signal

I have a problem with my Raspberry Pi 2 Model B. It has Retropie installed and it used to work fine. Now my display says "no signal". What I tried after some research: Different cables and ...
Sebastian's user avatar
1 vote
1 answer
55 views

Problem turning on Raspberry Pi 2b

I have a Raspberry Pi 2b that I have trouble turning on 1_When I insert the SD card containing the operating system into the Raspberry Pi and connect it to the adapter, sometimes the green light turns ...
mohammadmahdi1928's user avatar
1 vote
0 answers
476 views

How can I control a Cambridge Audio CXA81 amplifier using its "IR IN" input?

I would like to control the volume on my CXA81 from a Raspberry Pi. I already use a Serial HAT to send control codes to the amplifier. However, unfortunately, the volume may only be controlled using ...
Olly's user avatar
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0 votes
1 answer
280 views

Talking to MAX31865 from Raspberry Pi using Serial Peripheral Interface

I am trying to talk to the MAX31865 board from a Raspberry Pi over SPI but am not getting the results I'd expect. Can someone with more SPI experience take a look at my setup and point to what I may ...
Brushless's user avatar
0 votes
0 answers
137 views

Raspberry Pi 2, repair hardware damage

I bought two damaged Raspberry Pi 2s. Both don't boot regardless of the SD cards content (SD card is working in different Raspberry Pi). Both LEDs are steadily on. The previous owner told me that the ...
wkrt's user avatar
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1 vote
2 answers
106 views

Transferring files from raspberry pi 3 Model B+ to raspberry pi zero v1

I have a raspberry pi zero v1 and a raspberry pi model 3 B+. The second one has some testing files i want to transfer to the first one. Right now i’m ssh’ed into both raspberry pi’s (I’ll call them rp’...
Andrea Miramontes Serrano's user avatar
0 votes
2 answers
424 views

How can I switch windows (BringToFront) by code?

I'm running Raspbian Pi2 v11 (bullseye), in the GUI, and I have two full-screen applications running (one of them is a web browser). But I need to switch the visible application via code; I'm looking ...
Jarvis's user avatar
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2 votes
2 answers
11k views

Can the Raspberry Pi 4 do h265 encoding?

I would like to know if the Raspberry Pi 4 can do H265/HEVC Encoding at all. I am not bothered if it can't do it in real time as I would like to run jobs for encoding the video in the background, ...
Matthew Haywood's user avatar
0 votes
1 answer
739 views

Raspberry Pi Raspbian switching Multiple Desktops by application

I'm running Raspbian Pi v11 (bullseye), and I'm booting into the GUI. I'd like to set up two desktops that will run a single full-screen app on each (example: one is a web browser). And then via my ...
Jarvis's user avatar
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0 votes
0 answers
166 views

Indecipherable Characters with UART on Pi 2

I am attempting to use the UART pins on the Raspberry Pi 2 to interface with the console port on a Cisco Access Point. I've stripped an old RJ45 cable to connect the right TX, RX and GND pins from the ...
Baa's user avatar
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