General • Re: DMA and shared IRQ....
Good point.The other DMA IRQ are defined:Code: 4.1.14.6.1. irq_num_rp2350enum irq_num_rp2350Interrupt numbers on RP2350 (used as typedef irq_num_t)DMA_IRQ_0 Select DMA’s IRQ 0 output.DMA_IRQ_1 Select...
View ArticlePython • Re: DIY touchpad with RPi.GPIO and gpiozero
Yes but with a large resistor. Touching the coin pulls GPIO25 HIGH. Try it out.I will concede it is a rudimentary touch sensor, which will appear to work occasionally, but the reason you are having...
View ArticleGeneral • Re: Driving hundreds of LEDs with the Pico
I just wondered what's the peak current, and if you do some drive strength tuning (a little bit cumbersome in MicroPython).Statistics: Posted by gmx — Thu Feb 26, 2026 12:03 am
View ArticleAdvanced users • Re: Webscrapping of sites with javascript
Which Pi are you using?Oh, I thought it didn't matter, but a Pi4Statistics: Posted by valnurat — Thu Feb 26, 2026 12:44 am
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General discussion • Raspberry Pi against snow
My window was open, my Pi 3 was permanently connected near that window (to test my GPS module)...There was a heavy snowfall, I found snow on my Pi, I removed it, disconnected it, turned it over, then...
View ArticleGeneral discussion • Re: Raspberry Pi against snow
Snow melts, water and electricity doesn't mix.Your post implies that the Pi was powered up at the time, was it protected in a case?Statistics: Posted by wildfire — Thu Feb 26, 2026 3:13 am
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Keyboard computers (400, 500, 500+) • Re: RPi500+ cAPS lOCK dISABLE!
Thanks! Statistics: Posted by Hans13 — Fri Feb 27, 2026 12:40 am
View ArticleGeneral discussion • Re: How will California Law (AB 1043) affect Raspi OS?
I don't usually comment much on the politics of other countries but this seems to be an over use of "won't someone think of the children?".Written by people who don't understand the tech and sold to...
View ArticleGeneral discussion • Re: Cant power 2 sata disks with my Raspberry
Nothing new. Been a known issue since the launch of the 4B.Combined maximum current for bus powered USB devices on a 4B is total of 1.2A. And that assumes a good quality 3A PSU.1.2A is enough for one...
View ArticleTroubleshooting • Re: No access to /dev/mem is killing me
I now have it running on boot with chmod 777 to /dev/gpiomem in rc.local.But with that I have no keyboard input. It seems I should be using systemd, but I cannot find anything about running chmod with...
View ArticleCompute Module • Re: CM5 w/ IO board bricked
The problem was that the hub only recognises one port as host (which can be tricky with a powered hub). That, and the incompatible boot orders between cm4 and cm5.Statistics: Posted by AndrewKnutsen —...
View ArticleTroubleshooting • Random restarts after upgrade to Raspbian OS trixie
I upgraded myRaspberry Pi Model B Plus Rev 1.2to the latest raspbian OS and after a couple of days I get unexpected restarts without any valuable information in the logs. I am using the Official...
View ArticleBeginners • Re: How should I properly setup my Raspberry Pi 5 headless?
The cause of this problem was identified in July 2024 and the solution was given in viewtopic.php?t=373071 which was to add Code: video=HDMI-A-1:1920x1080@60D to cmdline.txt. An alternative was to...
View ArticleTroubleshooting • Drag and Drop Move and Copy not working
I know this has been discussed before, I'm still stuck on it. I'm using an updated version of Bookworm on a Raspberry Pi 5 and I can't move or copy to my Downloads folder with drag and drop. Menus and...
View ArticleC/C++ • Re: Any reccomendations for VScodium C/C++ extensions ?
Also, going back to the original question, what does a C/C++ extension provide?Also, I have been able to suppress most false clangd warnings and I'm looking into more tweaks for this.Sometimes you can...
View ArticleTroubleshooting • Re: Random restarts after upgrade to Raspbian OS trixie
Booting to desktop or command line?Might be running out of memory. IIRC the 1B+ only has 512MB.I've a feeling you may also need to switch logging to persistant rather than to RAM.Statistics: Posted by...
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General • Re: DMA and shared IRQ....
Ok, I got this working, thanks for the help all. Ended up using this :From header file.....Code: // DMA channels ids for 6809 bus interface readsextern uint8_t ReadDMA1;extern uint8_t ReadDMA2;// DMA...
View ArticleMicroPython • Re: Pico GPS Date/Time server (no WiFi)
Your 'dom = t[2] - (( t[6] + 1) % 7) # Work out when Sunday was' intrigued me but does seem to work. At least up to year 2099. After that it fails, and gets increasingly incorrect.It's quite simple...
View ArticleCamera board • Re: replacement for PiKrellCam on RPi Zero W?
The author passed away, so updates are unlikely to be forthcoming from them.RIP BillThank you for your beautiful work in this realm.Hope to meet you and shake your hand in the next realm.Statistics:...
View ArticleOther projects • Re: Multitouch HID with Rasperry PI for Windows
I ran across your post when researching the same issue.The key was to implement the feature report for maximum contact count.There is an ioctl for it. See https://elixir.bootlin.com/linux/v6.19. ......
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