All Questions
110 questions
0
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0
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29
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Raspberry Shake and Boom Down: What I tried. What else I can try?
I noticed on October 25 that my Raspberry Shake (AM.R3635) is down. It has been working fine for last several years and nothing changed in terms of internet connectivity.
All the lights are glowing as ...
- 1
0
votes
0
answers
45
views
Message printed multiple times when pressing hard button with RaspBerry Pi
I'm trying to print a message every time a button is pressed, and so far it's working fine, but the message is printed several times (somewhere around 4000 times) and I'd like it to be printed only ...
1
vote
1
answer
3k
views
Can I connect over 15 Bluetooth devices with raspberry Pi 4B 4GB ram using usb Bluetooth apapters
I have a raspberry Pi 4B 4GB ram and I want to connect it to 16 Bluetooth oximeters(BLE) and take readings after every 20 secs.
Now I know that pi can connect to only 7-8 Bluetooth devices at a time ...
- 113
0
votes
0
answers
454
views
Serial console to Pi 4b shows no output
I am trying to connect to the Pi 4b 8Gb via serial console, however, although I can connect to the serial adapter itself, I can't seem to get no output at all from it, nor using default raspbian ...
- 1
-2
votes
1
answer
478
views
Raspberry pi 4 crashes when opening VLC, Openshot, or RPI-Imager
I am using a Raspberry Pi 4 model B 4gb, and any time I open the apps stated above, the window opens, it doesn't display anything, the window is super huge and crashes. Multiple times has this ...
- 1
1
vote
1
answer
7k
views
Can I use a USB drive instead of a micro sd card?
I have a USB but not a micro SD card. I installed the operating system onto it.
Can I use that as the storage and OS layer for my Raspberry Pi 4?
- 141
0
votes
0
answers
46
views
USB Soundcard: 2nd configuration doesn't show up on Raspbian, but does on MacOS, Ubuntu on a laptop, and Windows. Is this a hardware issue?
I'm trying to get the USB soundcard embedded in a DJ mixer (Allen & Heath Xone23C) to play nice with a Raspberry Pi for the sake of using it with XWAX, an open source dj software. The problem is, ...
2
votes
2
answers
15k
views
Pi 4 does not see SD. Can't boot from SD-card
My Rpi 4 doesn't see the SD-card. I have switched SD-cards, formatted them all correctly. Also used both Raspian and Noobs. Nothing helps because it does not see the cards.
Every 'solution' on the ...
- 21
0
votes
0
answers
676
views
Hardware watchdog during reboot
I'm creating a prototype of a Raspberry Pi 3B+ that uses Mender as the update manager. My goal is that if the Raspberry Pi is stuck somewhere in the boot process (Corrupted Kernel that cannot even ...
- 1
1
vote
0
answers
116
views
Getting PC hardware info through pi zero
I am trying to get some info about the hardware on my PC through my pi zero for example CPU temperature and RAM speed etc. I have connected my pi zero through a single usb cable into my PC (I am able ...
- 11
-1
votes
1
answer
2k
views
Networking interfaces disappeared from my RPI 4B 4GB
Since receiving this Pi I've installed and configured Octoprint for my printer.
It ran fine without issues for 3-4 days, until I got disconnected when checking from work.
Once home I found the Pi in ...
- 1
2
votes
0
answers
2k
views
Hardware controlled RTS on a Pi4 not working accurately
We need to use RS485 to talk to one of our custom tools. We need to use hardware controlled rts/cts. I've read so many articles about this but nobody ever says it works for them with fast timing and ...
- 21
1
vote
0
answers
250
views
How to read rPi camera hardware information that which type of camera sensor( imx219 or OV5647) is being used in camera module?
I want to read the camera hardware spec to ensure which type of camera sensor (like imx219 or OV5647 etc) is being used in the rPi camera module for camera module v1 and v2.
Is there any method to ...
- 157
0
votes
0
answers
54
views
Raspberry Pi 3B+ No Boot (Hardware Failure?) [duplicate]
Between two identical out of the box RasPi's 3B+ (same supplier and model), one of them boots flawlessly with SD Card running 2019-04-08-raspbian-stretch but the other refuses too with all the same ...
- 1
1
vote
3
answers
617
views
Raspberry Pi 3 Model A+ Faint green pinprick light steady flashing
I just loaded an SD Card with Raspbian lite for the Pi3 Model A+.
It does the normal rainbow screen splash, followed by the 4 raspberries and a blinking cursor underneath. The pi never completes its ...
- 129
3
votes
2
answers
13k
views
How do I add on/off button to Raspberry Pi Zero?
How do I add an on/off button to a Raspberry Pi Zero board? I am new to the platform and kindly ask for instructions suitable for a novice. Thank you.
- 39
0
votes
0
answers
1k
views
SPI DMA in Raspbian
Is it possible to access the SPI DMA on a Raspberry Pi running Raspbian without using custom drivers by directly reading and writing to the associated hardware registers? I assume the register ...
- 111
1
vote
2
answers
229
views
Get different values from potentiometer even not touching
I have a potentiometer that is used to adjust volume level along with MCP3008 but even if I don't touch it, its values are going and coming as following.
Press Ctrl-C to quit...
Channel 0 minus 1: ...
0
votes
0
answers
69
views
Thermal imaging
I was wondering if anyone knows of a thermal imaging app for either iOS or android, just purchased an p3 b+ and just trying to get a few things clarified befor I start her up, also any info on a ...
- 101
0
votes
1
answer
2k
views
Connecting to mobile network on startup using ppp0
I have a sixfab 4G LTE shield and the module
through which I connect my RPi to cellular data. It requires few commands to be executed in order to connect.
How do I make it run only once post startup ...
- 101
1
vote
0
answers
291
views
Raspberry Pi remap DPI pins [closed]
I'm trying to hook up my Raspberry Pi a to custom display hat via the parallel display interface (GPIO Pins, not ribbon cable). The problem I'm facing is that the DPI pins are rather awkwardly placed ...
0
votes
1
answer
1k
views
Raspberry Pi 3 Model B- 3M Touch Systems
I connected yesterday a Raspberry Pi 3 Model B at a 3M touch Systems touchscreen. For installing I followed this tutorial that I found here: Inverted GPIO Touchscreen (Using 99-calibration.conf)
What ...
4
votes
3
answers
1k
views
Unformatable SD-cards; goto trash?
Some time ago I installed Raspbian and Kali on two microSD-cards. It was also some time ago when I tried to format them - without success. I put them aside. Yesterday I thought I try again. I used a ...
- 43
60
votes
3
answers
19k
views
Is the Raspberry Pi vulnerable to the Spectre or Meltdown exploit?
There are two new serious security flaws discovered, Spectre and Meltdown.
Is the Raspberry Pi vulnerable for Spectre and/or Meltdown?
- 1,446
1
vote
1
answer
3k
views
Dead USB OTG in Pi Zero W
I bought my first Pi, a Raspberry Pi Zero W 1.1 from CanaKit and I am having trouble with its USB port.
I tried booting latest Raspbian, Raspbian Lite and Noobs, but in all cases it's the same: no ...
- 11
5
votes
5
answers
8k
views
relay module led turn on but not working
I'm new to Raspberry Pi.
I followed this source and am stuck on checking "sudo python lighton.py".
The problem is the bulb is not turn on. Also there is no click sound from the relay. I'm using relay ...
- 59
1
vote
2
answers
2k
views
Problems formatting a micro SDHC card
Raspberry Pi V2-Jessie crashed. I cannot reformat SD card???
My Raspberry Pi V2 running Jessie crashed yesterday. As I watched the boot up afterwards it was full of errors relating to the boot SD, ...
- 193
0
votes
1
answer
2k
views
Error can't open device: Too many open files
After several hours of running the code, get the following error:
can't open device: Too many open files
Mi code is:
import signal
import os
from module.MFRC522 import MFRC522
from module.pinos ...
- 1
0
votes
1
answer
181
views
Plugging USB Drive causes SD corruption
I posted previously about a corrupted SD card that was becoming read only, but could still be accessed.
After setting up a new card - starting with a fresh Raspbian image - I've hit the same problem ...
- 165
1
vote
1
answer
381
views
How to send and receive data between RPi and PIC33E microcontroller via USB?.
This is my first project with PIC33E, and both the devices will be connected by USB only.
Rpi will have a User Interface (written in Python) and which will enable the user to send and receive data.
...
-1
votes
1
answer
1k
views
Raspberry Pi Zero Using 5v Pins to power Circuit
I have a motozero where I need to connect to a power supply.Can I use the 5v pins from raspberry pi zero as a power source? If so what pins numbers?
- 21
0
votes
1
answer
2k
views
PiCamera fails after a while: Out of resources other than Memory
I'm running a program which records a 5 second video and analyses it every 30 seconds. The program runs for a while but after like an hour or so it fails saying
● clocktwist.service - My Pendulum ...
- 13
3
votes
1
answer
3k
views
Raspberry Pi Serial Number or Unique ID Base Address Memory Location
I want to find the unique ID of a Raspberry Pi (BCM2835/2836/2837), without using kernel lookup.
Can anyone give me the memory address of the device serial number?
Before anyone suggests how to do ...
- 31
-1
votes
2
answers
2k
views
How to lower screen brightness on 2.4 inch monitor
I have a 2.4 inch adafruit monitor for my rasberry pi, connected through the GPIO pins, and I have a problem with setting the screen brightness.
https://learn.adafruit.com/adafruit-2-4-pitft-hat-with-...
- 47
3
votes
3
answers
2k
views
Does Pi Zero Have built-in-audio component?
I am looking to buy a Raspberry Pi Zero for my retro gaming project. I am asking wherher the Raspberry Pi Zero has any built-in internal audio speaker in the chip itself or not?
If there isn't, is ...
- 31
2
votes
2
answers
2k
views
High iowait when running Deluge daemon
I have a RPi 1 Model B+ running the 11/25/16 release of Raspbian Jessie Lite. It is running off a 64GB UHS 1 Class 10 Micro SDXC card. It is connected directly to my router via ethernet. I have it ...
- 171
-2
votes
1
answer
528
views
How can I connect this circuit (pictured below) to my raspberry pi without using the gpio headers? [closed]
I was wondering if anyone could tell me how to connect this circuit to my raspberry pi without using the gpio headers because I am trying to make a portable tablet with the raspberry pi 2 and the ...
0
votes
1
answer
722
views
Turn the Lights on/off wirelessly [closed]
I just bought my Raspberry Pi 3 today and I want to wirelessly turn the lights on/off.
I did some research on google but I am confused.
What are the requirements to do this?
1-) Raspberry pi
2-) .....
- 1
0
votes
2
answers
333
views
How to move to a newer Raspberry Pi model without a full reinstall
I just tried booting a Pi 3 with the OSMC image I'd been using on a Pi 1 Model B. The green LED lit up once briefly, no other reaction. I ended up backing up the config and restoring it to a fresh ...
- 217
0
votes
1
answer
111
views
Quicker boot w/Bluetooth and Python
I am creating an embedded display to be used as a heads up display. I want the system to be up and running as soon as possible. The basics I need to be running is the GUI of X to run a Python script ...
- 456
-1
votes
1
answer
183
views
how to change the reading channel? [duplicate]
this code is reading from channel 0, how can i change the reading channel
MCP3008
adc = pi.spi_open(1, 40000, 0) # Open SPI channel 1.
while True:
try:
c, d = pi.spi_xfer(adc, [1, 0x80, 0]) #...
-1
votes
1
answer
783
views
how to control robot arm with servos by potentiometer
i bought a robot arm consist of 6 servos, is there a possibility to control the servos with potentiometer as the potentiometer moves the servo moves, i wont be using any HAT.
thanks
3
votes
1
answer
5k
views
Raspberry Pi as Wiegand device - output Wiegand to receiver
I would like to build a Wiegand device from Raspberry Pi to output 37 bit Wiegand format data to Wiegand control unit receiver.
I don't want to read the Wiegand protocol on Raspberry Pi like from ...
- 133
1
vote
0
answers
179
views
ZoomFloppy and Raspberry Pi
I would like to install a ZoomFloppy to my Raspberry Pi 3.
How can I do that?
I just found older instructions for windows and macs.
I'd like to have a step by step guide to do so.
TIA
- 11
0
votes
1
answer
100
views
Raspbian on HardDrive
I'm currently running an apache2 server off my Raspberry Pi 2 with no problems and everything is going smoothly. Recently, my organization (which uses the Pi) came upon a pretty good computer and we ...
- 3
0
votes
1
answer
16k
views
Connect Respberry 3 to VGA monitor using HDMI to VGA Converter
I have 2 devices Device A and B and a LCD monitor M with VGA port.
Device A : Laptop Sony Vaio(HDMI output)
Device B : Respberrypi 3 (HDMI output)
Device S : Satellite dish TV Setup box(HDMI output).
...
- 123
0
votes
1
answer
95
views
my program wont work when I auto run it
I have a program that turns my pi on and off at a push of a button. The program works and i know that it runs on boot because it prints text and I can see it in the terminal. But what happens is when ...
1
vote
2
answers
866
views
changing values on a GPIO input pin via software/script
I have had a look around and no one mentions anything about this.
Is it possible to change the value of a GPIO set up as input pin via "software" terminal or something like that?
The reason is I ...
- 183
1
vote
0
answers
117
views
Generation of clk signal by the use of the SPI Protocol
The model which i am using is Raspberry Pi 2 Model B. The use of spi came across when i need to convert analogue value into digital value through the use of the MCP3008 chip. I would like to mention ...
4
votes
4
answers
20k
views
Raspberry Pi as a POS?
How practical is it to use a raspberry pi for a POS system? I'm in a small country where bring in a large quantity of POS system will cost too much. Was wondering if i can replace the current ...