General discussion • Pulse counter using RP2040
Hello!I am struggling with a task. I should measure the amplitude and count of pulses which are about 0,5nm long. I used GPIO interrupts to calculate the count of the pulses and it was going great to...
View ArticleBeginners • Passing sensor data from Pico W across Wifi without a web server
I'm new to using Raspberry pi hardware and also new to MicroPython, but I have decades of experience with coding C/C++ (not web based) among other things and some experience with programming...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • MCP3008 with spidev.h doesn't bring CE/CS...
There are a number of question that exhibit confusion in making the SPI interface work with the MCP3008 ADC chip using spidev.h and ioctl in C. For example viewtopic.php?t=115971. The bottom-line is...
View ArticleCompute Module • Can an emmc CM4 boot from an sd card?
I have a CM4 emmc (CM4104008) with 8 gb storage. Is it possible to run from an sd card?Statistics: Posted by tasslehawf — Tue Apr 09, 2024 1:53 am — Replies 3 — Views 28
View ArticleTroubleshooting • Ran into multiple issues on netboot Pi, need some help.
I managed to get a Raspberry Pi 4 to boot from my local network using dnsmasq and tftpboot. However, I encounter issues below:Not able to reboot/shutdown regardless of which command I useIt will...
View ArticleCompute Module • RTC on IO board not detected
Hi,Did not see an IO board forum, so hoping this post is OK here.I have an IO Board, with a battery installed (and confirmed supplying 3.1 VDC). I added `dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi` to...
View ArticleRaspberry Pi OS • lxqt desktop
Everything I tried - update-alternatives, edit lightdm.config - failed to start lxqt.Eventually an awefull hack did workI replaced /usr/bin/startlxde-pi with startlxqtHow'd a sane person get a lxqt...
View ArticleAdvanced users • how do I force HDMI ONN IN BOOKWORM
how do I force HDMI ON in BOOKWORM? I'm trying to display my Pi400 to a lcd driver board to an lcd screen from an old latop? It is diff in Bookworm. I've done it thru config.text in previos PI os. Or...
View ArticleBeginners • Date time synchronization issue
In my Raspberry Pi3 model B+,date and time automatic synchronization doesn't work, Initially I manually set the time by using sudo date -s "YYYY-MM-DD HH:MM:SS" command.Replace "YYYY-MM-DD HH:MM:SS"...
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General discussion • Raspberries on top of Boot?
So I've notice when booting with no splash screen, it displays these raspberry icons on the top of the screen. I honestly love it but I'm also curious if your able to edit this for your own custom...
View ArticleTroubleshooting • Raspberry Pi 5 quit working
I have a Raspberry Pi 5 and added a Waveshare HAT+ PCIe to M.2 HAT+ with a SSD to it. After I installed the HAT my Pi acts like it wants to boot up, and shows the home screen for maybe 5 seconds. The...
View ArticleNetworking and servers • Raspberry Pi 5 + 5G HAT
Since building 5G modems in the modern age is fairly easy with cheap PCB ethernet boards and 5G M.2 modules, I wanted to see if I could turn my Raspberry Pi into a 5G modem to act as a dual WAN...
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Troubleshooting • RPi5 SD Card Copier not recognizing miniSD card
I am trying to make copies of my miniSD card, so I can use them with other RPi5s that I have in my classroom. Seems the SD Card Copier application is not recognizing my miniSD card, even though it is...
View ArticleTroubleshooting • Raspberry Pi 5 Unable to read partition as fat
I am very new at Raspberry Pi5. It says sd: card detected but unable to read partition as fat. (Samsung 128 gb card) On my Windows 11 PC it shows nothing wrong and show partitioned in Exfat. I am able...
View ArticleTroubleshooting • RPI4B - DNS_PROBE_FINISHED_NO_INTERNET
Good Morning, Yesterday I restarted my RPI, which has been hibernating for a few weeks (yes, I know ...) and no wifi nor ethernet cable connection to the box.error displayed:...
View ArticleGeneral discussion • Recommend Raspberry Pi 4 setup for receiving Data from...
I have an Android application where I have HostadpuService running which has AID value unique to Raspberry Pi and Android app. And when we tap the Android app, RPi should trigger the HostadpuService...
View ArticleGeneral discussion • Bluetooth Communication with Raspberry pi 4
Hello, we are engineering students currently working on a capstone project of a portable bluetooth smart gloves. We are hitting a dead end on the automatic connection of two HC-05 bluetooth module,...
View ArticleBeginners • Pi 5 - disable red led when powered off
I managed to disable LED's when Pi 5 is working (using these settings: viewtopic.php?t=361697). But how do I turn off red led when Pi 5 is powered off?Statistics: Posted by barsmonster — Wed Apr 10,...
View ArticleTroubleshooting • Cannot access Pi over network after computational load
Hi there, I am currently setting up some home-network applications for backups and monitoring some data. For this I am using a Pi 3+ with the official powersupply and a 2.5 inch harddrive connected...
View ArticleTroubleshooting • Which UART can I use to send character to Raspberry Pi...
Hello everyone,I am using Raspberry Pi 3 model B and Raspberry Pi 4 model B. I connect 3 pins: GND, GPIO14 (UART_TX) and GPIO15 (UART_RX) with my PC and use Minicom to display the boot message....
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