Newest Questions
37,665 questions
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Occasionally unexpected characters at serial port opening (Arduino Mega to Raspberry Pi via TTL-232R)
I'm using an Arduino Mega to send data via serial communication to a Raspberry Pi 5. The connection is made through a TTL-232R cable (TTL serial on the Arduino side, USB on the Raspberry Pi side). On ...
- 111
0
votes
1
answer
39
views
Cant run fuzzy logic code in raspberry pi: is GPIO incompatible with rpi5?
I wanted to run some python code which uses fuzzy logic on a Raspberry Pi 5.
Therefore I had to call the skfuzzy/scifuzzy library to do that - from there the problem seemed to occur. It seems like ...
- 1
0
votes
1
answer
21
views
LUKS unlock prompt invisible on Raspberrypi 5
I encrypted the root partition of my RPI 5 like this:
Burn the image to the SD card and perform a regular boot.
Install cryptsetup and cryptsetup-initramfs.
Make the following modifications (see e.g. ...
- 101
0
votes
0
answers
19
views
Camera Module 3 - Pi5 - getUserMedia - AutoFocus
I'm trying to have a simple JS app to open the camera and to display it on localhost a webpage.
Opening the camera and setting the resolution works fine with a simple :
navigator.mediaDevices....
- 1
2
votes
2
answers
219
views
How to log temperature data
I'm looking for a simple, low-maintenance, future-proof way to log the CPU temperature (and ideally voltage data too).
The Raspberry Pi is part of an embedded system attached to vehicles operated by ...
- 151
0
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0
answers
18
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What is the DMA frame end (as referred in the official manual)
The official data sheet contains a remark that the TA bit in SPI_CS register is automatically reset on "dma_frame_end impulse" (see p 138 Table 160 SPI_CS register).
However there is no ...
- 101
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0
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29
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Identify USB host plugged into Pico
I have a Pico attached to a USB hub switcher. This means depending on its state the Pico is connected to either a Windows desktop, or a Macbook. I want to display this on the screen I've attached to ...
- 101
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answers
40
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Busybox when booting
I am running raspberry pi 4. It still work yesterday but got into BusyBox today when I boot. I have tried the command in here and also e2fsck -c /dev/mmcblk0p2 but it only said 2 files have error and ...
- 1
0
votes
1
answer
13
views
Connecting RPI 4B to Adafruit FeatherWing RFM95W 433MHz
I wanted to connect the Adafruit LORA module to my RPI 4B.
I connected it this way:
RFM9x FeatherWing
Raspberry Pi 4B (GPIO)
3.3V
3.3V
GND
GND
SCK
GPIO11 (SCLK, pin 23)
MOSI
GPIO10 (MOSI, pin 19)
MISO
...
- 1
-1
votes
1
answer
28
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Rock solid ethernet via cellular modem, but why are my wired connections so flaky?
I'm having trouble keeping alive IP connection between Pi port(s) and laptop on a hard wire. The connection freezes after 5-10 minutes while I am using putty. However, I am having completely zero ...
- 97
0
votes
1
answer
45
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Raspberry Pi 4 as router
My ISP provider is charging very high for Static IP for port forwarding. So I decided to disconnect the internet cable connected to ISP router/modem, and connect to Ethernet port of Raspberry Pi4. I ...
0
votes
0
answers
28
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Skfuzzy not installed in Raspberry Pi 5 [duplicate]
I can't install the Skfuzzy on the Raspberry Pi 5 module. It is showing me the error below given ---
error: externally-managed-environment
× This environment is externally managed
╰─> To install ...
0
votes
0
answers
31
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What should I do about the rpi-eeprom package on Raspberry models Zero, 1,2,3?
I have a few of the older RPi (models incl. "Zero", 1, 2 and 3) that do not have any EEPROM. Despite that, I notice that during apt update, the rpi-eeprom and rpi-eeprom-images packages ...
- 1
0
votes
0
answers
20
views
How to use a Pimoroni 1.3" SPI Colour Square LCD with pico & MicroPython?
I want to use the 1.3" SPI Colour Square LCD (240x240) with a pico and micropython. According to the website that is possible. However, when looking at the github page of examples there is ...
- 101
0
votes
1
answer
46
views
12V output into GPIO
I am looking to wire this inductive proximity sensor to my Raspberry PI Pico W. I plan to power the sensor with a 12V source.
However, I obviously can't use the naive way since the sensor outputs at ...
0
votes
1
answer
35
views
my raspberry pi 4 is not working
I just got it a couple of days ago and I have a 32gb SanDisk that I used for the Sofware for it. I watched multiple guides for setting them up, but the raspberry just doesn't work when I try to boot ...
-2
votes
0
answers
31
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honeygain on a raspberry pi
I have installed honeygain on a raspberry pi, following this tutorial.
And I have also had a look at this other one.
But I see no result (i.e. no revenu generated).
How can I check that all is ...
- 1
-1
votes
0
answers
8
views
Raspberry camera not detected
I have downloaded all necessary data but still it shows
Supported=1 detected=1 libcamera interface=0 help.. how do I fix this
Running libcamera-hello
Says no camera available
I don’t know how to ...
0
votes
1
answer
21
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I can't get my reSpeaker 2-Mics Pi HAT V2.0 to work with my raspberry pi zero 2w
I followed the seeed wiki for set up and everything seems to be in working order but when I go and test if the respeaker is getting any audio input with "python3 recording_examples/...
-1
votes
0
answers
40
views
rpi2B v1.1 hardware error, not reading a good sdcard
my RPi2B v1.1 dated 2014 stopped reading SDcard and both red & green lights are constantly on.
Checked sd-card, changed to another one, same problem.
Power is good 4.99V / 3A
When powering on HDMI ...
- 9
0
votes
1
answer
31
views
How to use mpris(2) or DBUS on raspberrypi running bookworm?
I am running a raspberrypi 4B with bookworm (and whichever desktop - X11 or Wayland - that allows it to work with VNC) and writing code in Python.
I am trying to read (and maybe eventually write) to ...
- 1
0
votes
0
answers
14
views
Recalbox - problems when adding new ROMs
I am running recalbox on a Raspberry Pi5. I added some ROMs by copying them to the n64 folder via SSH, and they work fine. But if I repeat this procedure a second time to add new games, then every ...
- 101
-1
votes
0
answers
14
views
Raspicam not working vcgencmd get_camera
[all)
[pi4]
dtoverlay=vc4-fkms-v3d
# Run as fast as firmware / board allows
arm_boost= 1
[all)
gpu_mem=128
enable uart-1
dtoverlay=w1-gpio
start_x=1
I have a problem. I see that when this is my ...
1
vote
1
answer
57
views
Blowing up gpio pins.... what can I do?
I'm using a pi 4 as a thermostat for years. It's working perfectly. Until.... I decided to read the error code from the heating unit. This unit has a relay (dry contact) that pulse the error code. So ...
- 19
1
vote
0
answers
30
views
Unable to log a mouse's scroll wheel
I am building an application on raspberry pi pico.
A USB mouse is connected to the pico, and then the pico is connected to the PC.
The pico logs the mouse's button presses and mouse's movements and ...
- 107
1
vote
0
answers
22
views
Detect whether USB speaker is connected to my RPi 4B, in Python
I'm building a device that if in my Python program the USB speakers are not connected it directs sound only to the headphones but the device works differently in a different mode with not so many ...
- 11
0
votes
0
answers
27
views
How are wireless data packets processed on the Raspberry Pi?
My query is prompted by my quest to set up a firewall on my Raspberry Pi. However, in attempting to do this, I am wondering how connections are handled in general.
From reading online, it seems there ...
1
vote
0
answers
30
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RPi SSH Accessible by hostname on Verizon but not Cox
I am able to connect to my rpi via ssh with it's hostname on Verizon networks, however, I recently switched service to Cox and on my Cox network I am unable to use the hostname w/o "hard-coding&...
- 11
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votes
0
answers
14
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Cross-compiling OpenSSL and FFMPEG for CM3+?
I have created myself a cross-compiler (look at this thread).
OS is 64bit, compiler is targeting CM3+.
To avoid clicking I repeat here my compiler's capabilities:
-mabi= ...
- 281
0
votes
1
answer
18
views
Verifying my compiler for CM3+ with 64bit
I'm targetint a CM3+ with a 64bit OS.
Cross-compiler (and toolchain) is using these default configurations:
-mabi= lp64
-march= armv8-a
...
- 281