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Graphics, sound and multimedia • Illuminating e-Paper
Been working on a project for fun, mostly to learn Fusion and 3D printing. It's a frame for e-Paper, and I want to illuminate it so it's visible in the dark as well. I tried the model below, but as...
View ArticleC/C++ • Raspberry Pi 5 vs 4B - slow SPI
Hi,I have tested speed (in sipmle loop, C++, 10MHz clock) of SPI bus, but speed of Raspberry Pi 5 is much worse than 4B. The clock in the SPI data burst is the same, but time lag between bursts is...
View ArticleOther projects • Pigg - A GUI for interacting with Raspberry Pi GPIO Hardware
Two of us have started a small project called “pigg” to learn more rust, Iced GUI and GPIO programming on the Pi with rppal.The result is a first release (v0.1.0) that includes the “piggui” (“piggy”...
View ArticleCamera board • What's the deal with NoIR camera, PlantCV and Band indexes?
So... I want to be able to detect and ID seedlings of crops and weeds to advance the [open weed locator][https://github.com/geezacoleman/OpenWeedLocator] to make more cost effective the outphasing of...
View ArticleGraphics programming • OpenCL on Zero 2 W? Re-implementing ye olde...
So this guy presumably developed OpenCL 1.2 for the RBPi 3:[VC4CL][https://github.com/doe300/VC4CL]It's my understanding that both the RBPi 3 and the zero 2W have the same GPU: the VideoCore IVSo if...
View ArticleTroubleshooting • Blinking Light, no image
Recently purchased a pi VWhen i try to load it with anything, it flashes orange 4x slowly, then 5x quicklyNo images are displayed when plugged in via hdmiWhen I use the imager tool to reset the pi, it...
View ArticleGeneral discussion • qemu buildroot image for rpi4: serial console login and...
Hi All,I wanted to build a very minimal embedded linux image consisting of only busybox , bash , less, nano and vim.Enabled serial console option in boot/config.txt . Used buildroot to build a aarch64...
View ArticleTroubleshooting • Raspberry Pi Model 3B flashing green light
Hello, I am having issues with my Raspberry Pi Model B. When I power up the device, the red light doesn't flash at all, but the green light flashes once, does like 3 mini flashes (like it's spazzing...
View ArticleTroubleshooting • Booting a system from USB sometimes breaks bootloader
Hi.I have a customized Raspberry Pi system that I boot from USB on lots of brand new RPIs and on some of them (lets say around half) it breaks the bootloader. Nothing appears on HDMI screen. Restoring...
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Camera board • HQ Camera blue and purple colors
Wanted to ask what I should look at changing. So far I've been using automatic settings when recording 1080P 30FPS videos (with 16mm telephoto).See the attached example images where blue/purple/pink...
View ArticleTroubleshooting • fresh install bullseye on pi3, disable-bt causes sysrq; HELP
fresh install and apt upgradeconfig.txtdtoverlay=disable-bt causes :kernel: sysrq: HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i)...
View ArticleGeneral discussion • Raspberry Pi 5 GPIO busy
Hi everyone, I just got a raspberry pi 5 and what I noticed right away was how to use the GPIO. With RPI4 it's a lot easier, and with this one I've had a lot of problems. The GPIO control library is...
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Beginners • Cannot detect i2c address from Pi Pico w
Hello, I am just getting into using i2c communication (specifically with magnetometer MLX90393) and I cannot get the pico to even recognise the slave address. My code is as follows:Code: int main() {...
View ArticleTroubleshooting • Unable to adjust screen resolution on composite video Pi 4 B.
Pretty new user here I’m trying to get a raspberry pi 4 running with either Raspberry Pi OS, Ubuntu, or Fedora and using the Pi 4B composite video out. My hope is to run a pi with a more general OS...
View ArticleTroubleshooting • Do I have to rewrite my opencv python code for bookworm?
I installed bookworm on a pi 4 8gb. Libcamera stuff works, so does PiCamera2. I am trying to get all of my opencv programs running. A simple camera snippet won't work.Code: import numpy as npimport...
View ArticleAdvanced users • Rpi routerless LAN network with static IP or dnsmasq?
Hello, my rpi5 desktop 64-bit has no router and receives Internet from the phone hotspot.I've connected a Wi-Fi AP (UAP-AC-LIte) via Ethernet to the rpi5 RJ45 port.The Wi-Fi AP will be used for WLAN...
View ArticleTroubleshooting • ppp between a rasp pi zero and esp32
Good Day I am tossing this out there for some suggestions. I am trying to see if I could get a PPP session between a rasp pi zero and esp32 that are hooked up via their UARTs with dupont wires. Thus...
View ArticleGeneral • Pico W -> RFM69 + MQTT + Home Assistant = Automatic Awning Control
Friends, I just completed my first Pico-W project. This was a bunch of fun and I'm really glad I tried out this hobby!BackgroundI have an awning in the back that we mostly open during the summer to...
View ArticleCompute Module • Making Eth gadget using Slave Port on RPi 4 CMIO
I've been trying to make an Ethernet gadget using the Slave port USB with my CMIO Rpi 4 board. I've done this on other RPi boards but unable to get this to work...The ifconfig -a shows the usb0...
View ArticleTroubleshooting • Using gpio-shutdown does not force file-system to sync when...
Hi experts,We have a consumer product that uses a CM4 as it's main processor. To make the product as robust as possible, we needed to address the issue of having the power cut while it's running. Our...
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