jwo (@jwo@mastodonczech.cz)
How do I measure width of short pulses on non-realtime Linux?
I registered a course at the university where they want to use #RaspberryPi 4 with CPython. They gave us HC-SR04 ultrasound distance measurement module and the instructor (which even _said_ that they're mostly clueless about the project implementation 😅) recommends us to do that in software (running under CPython – wtf‽). I've seen even things like “usleep(.0001)” in their code with assumption there will be no additional delay.
I've done this before (but quite a long time ago), but on AVR, so there was no problem with precise time measurement, of course. 😅
The GPIO accesses do ioctls, so I assume that the kernel might block the process for indeterminable amount of time, especially when the system is under load.
I'm new to doing such time-sensitive I/O stuff on non-realtime system (that's why I chose this course 😅) and I want to learn more in general.
Assume that I don't want to write a kernel module for this.
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norri (@norri@social.norri.tv)
Progress on Norri Audio devices. Raspberry Pi endpoints with aluminum enclosures, amplifier HATs, and a read-only OS to prevent SD card corruption.
Supporting AirPlay 2, Bluetooth, and OpenHome Sendspin. We think we may be developing some of the first devices to support Sendspin, a new multi-room protocol from the OpenHome Foundation.
These are entirely optional. Norri works with any compatible speakers already in the home.
#Norri #Hardware #RaspberryPi #MultiRoom #Audio
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jspath55 (@jspath55@chaos.social)
Did a couple RC1 upgrades, amd64 and aarch64 so far.
https://wiki.netbsd.org/releng/netbsd-11/
Stuck on the #RaspberryPi 0W which has lost its pkg remote repository somehow.
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askubuntu (@askubuntu@ubuntu.social)
Network is unstable after latest kernel upgrade #networking #kernel #2404 #raspberrypi
https://askubuntu.com/q/1563798/612
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RPiSpy (@RPiSpy@mastodon.social)
Helping young people stay safe online in the age of AI https://www.raspberrypi.org/blog/helping-young-people-stay-safe-online-in-the-age-of-ai/ #RaspberryPi (via Raspberry Pi Foundation)
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taoofmac (@taoofmac@mastodon.social)
Hacking the Maclock
I’ve been sleeping on doing mine, which has been sitting next to the larger 3D printed version for a couple of months now.(...)
#classic #emulation #hardware #mac #macclock #raspberrypi
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techygeekshome (@techygeekshome@techhub.social)
Install Node.JS on Raspberry Pi | https://techygeekshome.info/install-node-js-on-raspberry-pi/?fsp_sid=30275 | #Guide #Node.JS #RaspberryPi #Raspbian #refresh
https://techygeekshome.info/install-node-js-on-raspberry-pi/?fsp_sid=30275
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ajguides (@ajguides@mastodon.social)
Install Node.JS on Raspberry Pi | https://techygeekshome.info/install-node-js-on-raspberry-pi/?fsp_sid=30274 | #Guide #Node.JS #RaspberryPi #Raspbian #refresh
https://techygeekshome.info/install-node-js-on-raspberry-pi/?fsp_sid=30274
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r (@r@fed.brid.gy)
TOPST D3-G maker SBC is powered by Telechips TCT8050 “Dolphin3” Cortex-A72/A53/R5 automotive-grade SoC
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iosifidis (@iosifidis@fosstodon.org)
🚀 Νέα εποχή για το @opensuse στους ARM! 🐧
Ολοκληρωμένος οδηγός για να εγκαταστήσετε τους @ONLYOFFICE Desktop Editors στο openSUSE 16 ARM σε λίγα μόνο βήματα.
Αποκτήστε:
✔️ Πλήρης offline εργασία
✔️ Επεξεργασία PDF & Visio
✔️ Πρόσθετα (DeepL, draw.io, κ.ά.) & AI Βοηθός
✔️ Άψογη ενσωμάτωση με clouds (Nextcloud, κ.λπ.)
🔗 Διαβάστε τον οδηγό & κατεβάστε δωρεάν: https://www.onlyoffice.com/blog/el/2026/02/how-to-install-desktop-editors-on-opensuse-16-arm
#ONLYOFFICE #OpenSUSE #ARM #Linux #OpenSource #Libre #RaspberryPi #FOSS #TechGuide #Tech
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marlinz (@marlinz@sueden.social)
Mit was kann man Amazon Ring ersetzen? Hab ja Videoüberwachung lokal auf Festplatte. Fand das Feature halt toll mit Alarm bei Bewegung
Kann man dir Kameras hacken und mit einem Raspi koppeln
#ring #raspberrypi #unplugbigtech
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paulrickards (@paulrickards@mastodon.social)
Installed Basillisk II (using an SDL version and not X11) on a Pi displaying on a fixed resolution (1536x2048) HDMI LCD. The LCD also has a fixed rotation (90 degrees CCW) so I have to put in a rotate=270 in the cmdline.txt file. This works fine for the CLI.
However, starting Basillisk II, the screen rotates back 270 CCW. Is there a rotate setting in Basillisk (I can't find one) or some other setting to get it to display the right way up?
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