MicroPython • MFRC522 from sunfounder suddenly stopped working.
The lights light up but it doesn't read NFC cards/keyfobs. The tags are all NXP mifare classics and I don't think it even tries to read. Anyone know what the problem is?Statistics: Posted by...
View ArticleAI Camera - IMX500 • Re: Colors in the ai Camera
i use a python script:import cv2import numpy as npimport osimport timefrom functools import lru_cachefrom picamera2 import MappedArray, Picamera2from picamera2.devices import IMX500from...
View ArticleTroubleshooting • Re: Brave crashing
I don't think that this is necessarily a Brave issue. I have the same problem with Chromium 131.0.6778.85, running an RPI5 on Manjaro ARM, unstable branch. I've gone back to Chromium 130 as a...
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SDK • Re: how use gpio delay time microseconds ?
thank's how use it ? in documentation we have static fonction:https://github.com/raspberrypi/pico-sdk ... c#L40-L119Code: uint delay_cyc = configured_freq[clk_sys] / configured_freq[clock] +...
View ArticleAutomation, sensing and robotics • Re: Simple light level detector using...
There are options- use a breakout board with a build in comparator, e.g. https://www.berrybase.de/en/lichtsensor ... rce=google- if you use the capacitor-LDR-approach, then if you increase the...
View ArticleSDK • Re: Why is the default stack size 2 KiB?
If they aren't enabled then why you only have 2KB stacks is as much a mystery to me as it is to you.As I mentioned you can put some of your global variables into those scratch_x/y linker sections via...
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SDK • Re: How can I avoid warnings... "CYW43_LWIP" redefined
Can you check that you are not linking to both pico_cyw43_arch_lwip_threadsafe_background and pico_cyw43_arch_none?Thank you very much, that was it! My top level cmake included the...
View ArticleBeginners • Re: raspberry Pi as printer server
thanks. It would be typical if the OP never showed up again ...Statistics: Posted by scruss — Tue Dec 03, 2024 4:05 pm
View ArticleTroubleshooting • Re: Waveshare 7'' DSI-LCD configuration on RP4B
It's a WaveShare product - - > tech support to be provided by WaveShare!Statistics: Posted by aBUGSworstnightmare — Tue Dec 03, 2024 4:06 pm
View ArticleTroubleshooting • Re: Usb-c splitter cable to Connect iPad and raspberry pi...
USB-C Spec does not have a 'USB splitter cable' - - > make use of a proper power supply (for each device).Statistics: Posted by aBUGSworstnightmare — Tue Dec 03, 2024 4:08 pm
View ArticleTeaching and learning resources • Re: Advent of Code 2024
Code: ;;; Advent of code 2024 - day3, part1 & 2, on BPI-F3 RISC-V;;; Chez code (load "../../utils.so")(define (string-parse s) (let ((len (string-length s))) (cond ((number? (string->number s))...
View ArticleTroubleshooting • Re: Raspberry CM4 pwm-backlight duty cycle missing
Is it possible this issue is caused by X11?When using a custom X11 rootfs I have the described issue.When using the same overlay on a Raspbian I don't have this issue and there is PWM output on the...
View ArticleTroubleshooting • Re: PI 5 sometimes will not power on
Is your original 27Watt adapter plugged into a wall socket or mains extension? Does it make a difference?Statistics: Posted by rpiMike — Tue Dec 03, 2024 4:20 pm
View ArticleThe MagPi • Adding an expansion Board to my Pi Zero 2W
Hello. I am trying to add a Waveshare MCP23017 IO Expansion Board to my Pi Zero 2W which is already using an Electrodragon HAT for my RBG modules. The modules work great but I need some more GPIO pins...
View ArticleBeginners • Re: Using USB-C port for both data and power
Sound pretty close to viewtopic.php?t=380394.. Both users having iPad ProStatistics: Posted by aBUGSworstnightmare — Tue Dec 03, 2024 4:25 pm
View ArticleTroubleshooting • Re: PiServer not working
I do have Rasberry Pi 4b and trying to make it work with PiServer running on a VM on the same network.You do not specify which hypervisor you are using.In case you are using Virtualbox make sure you...
View ArticleBare metal, Assembly language • MMU Intermediate Physical Address size
Hi folks,I have an issue tuning the IPS / T0SZ / T1SZ settings in TCR_EL1 on rpi4.For some time I've had MMU enabled in EL1, with page tables working for both TTBR0_EL1 and TTBR1_EL1. Previously I was...
View ArticleCompute Module • Re: piTop, CM5, Waveshare CM4 to Pi3
Neither PiImager nor gparted can see the eMMC, they only see the usb SSD!Statistics: Posted by rpiMike — Wed Dec 04, 2024 4:19 pm
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General discussion • Open Frame power for long term usage
Hello Everyone.I know these topics are much debated, but things in my opinion are not very clear..Everyone recommends buying the original USB-C Raspberry adapters sold by Raspberry,. but I don't need...
View ArticleMicroPython • multi-core bug or feature?
I am working on a new micropython pico project and ran into an "issue" when using both cores. One core reads serial commands over the USB using sys.stdio and queues them. The other core pulls the...
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