Trending 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 ...
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218
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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
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1
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21
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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
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1
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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 ...
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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....
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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 ...
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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 ...
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45
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PI4J SPI - getting old data
I have a weird issue with receiving data over SPI - I'm always getting "old" data - the data from previous transmission, not the current one.
I want to communicate between Raspberry and ...
- 99
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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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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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1
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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 ...
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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 ...
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1
answer
46
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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 ...
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vote
4
answers
51
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Keyboard Matrix And Pull Up Resistors
I have a question about pull-up/pull-down resistors on the Raspberry Pi Pico.
To be as brief as possible - I am trying to create my own keyboard for the learning experience and I wanted to use the ...
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1
answer
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Docker container not running unless I ssh into RPi
I don't think this problem has to do with Docker at all, but I'll describe the symptom first. I'm running a RPi 4 model B, with 2024-11-19-raspios-bookworm-arm64-full flashed on the SD card a few days ...
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