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Enter new markets and embrace a distributed workforce to grow during a pandemic - Sarah Cole
Contributor
Sarah Cole is a senior associate in Taylor ... - http://feedproxy.google.com/~r/Techcrunch/~3/PI_KzShbDng/ #humanresourcemanagement #entrepreneurship #venturecapital #europeanunion #telecommuting #employment #remotework #startups #column #europe #labor #asia -
A cycloidal pendulum - one suspended from the cusp of an inverted cycloid - is isochronous, meaning its period is constant regardless of the amplitude of the swing. Please find the proof using energy methods: Lagrange's equations (in the images attached to the reply).
Background:
The standard pendulum period of \(2\pi\sqrt{L/g}\) or frequency \(\sqrt{g/L}\) holds only for small oscillations. The frequency becomes smaller as the amplitude grows. If you want to build a pendulum whose frequency is independent of the amplitude, you should hang it from the cusp of a cycloid of a certain size, as shown in the gif. As the string wraps partially around the cycloid, the effect decreases the length of the string in the air, increasing the frequency back up to a constant value.In more detail:
A cycloid is the path taken by a point on the rim of a rolling wheel. The upside-down cycloid in the gif can be parameterized by \((x, y)=R(\theta-\sin\theta, -1+\cos\theta)\), where \(\theta=0\) corresponds to the cusp. Consider a pendulum of length \(L=4R\) hanging from the cusp, and let \(\alpha\) be the angle the string makes with the vertical, as shown (in the proof).#Pendulum #Cycloid #Period #Frequency #SHM #TimePeriod #CycloidalPendulum #Lagrange #Cusp #Energy #KineticEnergy #PotentialEnergy #Lagrangian #Length #Math #Maths #Physics #Mechanics #ClassicalMechanics #Amplitude #CircularFrequency #Motion #Vibration #HarmonicMotion #Parameter #ParemeterizedEquation #GoverningEquations #Equation #Equations #DifferentialEquations #Calculus
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#Electricity & #Rain: Built big enough, solar farms could influence the weather in coastal deserts and cause rain. This is because moist winds blow in from the sea. The black solar panels heat the air and cause it to rise. If properly scaled, this creates clouds and rain, according to PI Dr. Oliver Branch & Prof. Dr. Volker Wulfmeyer from #UniHohenheim. Thanks to the #UAEREP funding program, they plan to test this hypothesis as soon as possible in the United Arab Emirates. https://t1p.de/gh7iq
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NYC Mayoral Inauguration bans Raspberry Pi and Flipper Zero alongside explosives
#HackerNews #NYC #Mayoral #Inauguration #Raspberry #Pi #Flipper #Zero #Security #News
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An interesting read, if you want to understand coding agents or building one yourself.. its on my #TODO for sure. 😀
https://mariozechner.at/posts/2025-11-30-pi-coding-agent/ -
Ah yes, because who doesn't love overcomplicating their #VPN setup with a trifecta of nerd gadgets? 😅 Instead of using #Tailscale like a sane person, let's dive into an endless rabbit hole of #WireGuard, Pi-hole, and Unbound to prove just how much free time we truly have! 🖥️🔧
https://psyonik.tech/posts/a-guide-for-wireguard-vpn-setup-with-pi-hole-adblock-and-unbound-dns/ #Overcomplication #NerdGadgets #PiHole #HackerNews #ngated -
I am still developing my “grab a repo to build and run it” skills with #rust.
On my (mostly up to date) MacOS boxes this is fairly straightforward, but trying to coax code into building and running successfully on older hardware (eg ten year old raspberry pi) is harder and I’m still working out which things to fiddle on Cargo.toml to adjust how things are built. #GLEW #egui #wgpu -
I am still developing my “grab a repo to build and run it” skills with #rust.
On my (mostly up to date) MacOS boxes this is fairly straightforward, but trying to coax code into building and running successfully on older hardware (eg ten year old raspberry pi) is harder and I’m still working out which things to fiddle on Cargo.toml to adjust how things are built. #GLEW #egui #wgpu -
I am still developing my “grab a repo to build and run it” skills with #rust.
On my (mostly up to date) MacOS boxes this is fairly straightforward, but trying to coax code into building and running successfully on older hardware (eg ten year old raspberry pi) is harder and I’m still working out which things to fiddle on Cargo.toml to adjust how things are built. #GLEW #egui #wgpu -
I am still developing my “grab a repo to build and run it” skills with #rust.
On my (mostly up to date) MacOS boxes this is fairly straightforward, but trying to coax code into building and running successfully on older hardware (eg ten year old raspberry pi) is harder and I’m still working out which things to fiddle on Cargo.toml to adjust how things are built. #GLEW #egui #wgpu -
I am still developing my “grab a repo to build and run it” skills with #rust.
On my (mostly up to date) MacOS boxes this is fairly straightforward, but trying to coax code into building and running successfully on older hardware (eg ten year old raspberry pi) is harder and I’m still working out which things to fiddle on Cargo.toml to adjust how things are built. #GLEW #egui #wgpu -
Run Glances at RBPI startup
If you’re reading this on fediverse and the layout is off, here’s the link to the original blog post with a nice text & pictures layout.
In my previous post, I struggled to run glances on my Raspberry Pi Zero W. After a first reboot I stared to my Home Assistant dashboard and wondered where is the data from my RaspberryPi. Of course, I ran it manually from the shell, it didn’t restart by itself.
If you ask me to tell you out of my head how to make a service/script start after a reboot, I will stare you blank.
After a bit of googling, I found out there are at least 4 different ways to do it.
Firstly, I tried to make glances to start using crontab method:
sudo crontab -e#then I added the following command to crontab:@reboot sh /<path to my glances>/glances -wIt failed, don’t know why, maybe because Raspbian doesn’t like @restart command.
Second try – rc.local:
I tinkered a bit with rc.local but I gave up quickly.
Third try – systemd – it worked!
1. Go to systemd directory
cd /etc/systemd/system2. create a definition file for the service
sudo nano glances_w.service3. Add the following text to glances_w.service file:
[Install]WantedBy=multi-user.target[Unit]Description=Glances Web ServerWants=network-online.targetAfter=network-online.target[Service]User=tomiGroup=admExecStart=/home/tomi/glances/bin/glances -wExecStartPre=/bin/sleep 10Type=simple[Timer]OnStartupSec=25Change parameter User (tomi) to your user and ExecStart (/home/tomi/glances/bin/glances -w) with path to your glances start command.
4. Enable and start service
sudo systemctl enable glances_w.servicesudo systemctl start glances_w.service5. Check the status of the service
systemctl status glances_w.serviceIt should give you something like:
Thanks to this forum post – now my glances start autmatically after a reboot. Of course it didn’t go smoothly as described above. I had to tinker with the User and Group parameter. I didn’t know which user should I insert. Then I didn’t know the name of the group.
So I had to find it out using:
groupsgroups tomiThe bottom line is: without forums and manuals for linux commands, I’d be completely disabled when using linux. I’m using it on and off for 30 years, but still struggling with basic commands. I wonder if I will ever climb above my current level: google-the-command-copy-paste-modify-repeat
Tags: #homeasistant #glances #raspberrypi #systemd
https://blog.rozman.info/run-glances-at-raspberry-pi-startup/
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WayV’s “Love Talk” Becomes Their 1st MV To Hit 100 Million Views
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Ten To Leave SM Entertainment + Remain With NCT And WayV
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Circle Chart Reveals Year-End Digital And Album Charts For 2025
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Hwasa, CORTIS, Doyoung, SAY MY NAME, fromis_9, TWICE, ILLIT, And More Top Circle Monthly And Weekly Charts
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“Music Core In Macau” Announces Second Lineup
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WayV, NCT’s Doyoung, MAMAMOO’s Hwasa, And More Top Circle Weekly Charts
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Watch: NCT’s Doyoung Takes 1st Win For “Promise” On “Music Core”; Performances By SHINee’s Minho, WayV, And More
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ELLE Korea Previews IU And Byeon Woo Seok’s Photo Shoot With Fun April Fools’ Post
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Choo Young Woo And Shin Sia Praise Each Other, Talk About Their Romance Film, And Share Their Thoughts On Love
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🌍 ■ Un piloto alemán de 35 años cobra 12.000 euros al mes sin impuestos en el Golfo: "En Alemania ganaría 4.000 euros netos, pero nadie quiere vivir tan lejos de casa" ■ Vivir a cientos de kilómetros de casa pued[…]
https://www.huffingtonpost.es/global/un-piloto-aleman-35nos-cobra-12000-euros-mes-impuestos-golfo-en-alemania-ganaria-4000-euros-netos-nadie-quiere-vivir-lejos-casa-f202603.html?int=MASTODON_WORLD#contratosdetrabajo #global #dinero #alemania #salarios #pilotos #golfopersico
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Worked on data & backups today — Seafile on my Raspberry Pi still a bit buggy but usable. Took a break at a café, listened to a podcast ☕, then stopped by Shoprite before heading back to the hostel.
#DigitalNomad #SelfHosting #Seafile #RaspberryPi #Backup #CafeLife #Podcast #TravelLife #travel #zambia #africa
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Worked on data & backups today — Seafile on my Raspberry Pi still a bit buggy but usable. Took a break at a café, listened to a podcast ☕, then stopped by Shoprite before heading back to the hostel.
#DigitalNomad #SelfHosting #Seafile #RaspberryPi #Backup #CafeLife #Podcast #TravelLife #travel #zambia #africa
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Worked on data & backups today — Seafile on my Raspberry Pi still a bit buggy but usable. Took a break at a café, listened to a podcast ☕, then stopped by Shoprite before heading back to the hostel.
#DigitalNomad #SelfHosting #Seafile #RaspberryPi #Backup #CafeLife #Podcast #TravelLife #travel #zambia #africa
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Worked on data & backups today — Seafile on my Raspberry Pi still a bit buggy but usable. Took a break at a café, listened to a podcast ☕, then stopped by Shoprite before heading back to the hostel.
#DigitalNomad #SelfHosting #Seafile #RaspberryPi #Backup #CafeLife #Podcast #TravelLife #travel #zambia #africa
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Worked on data & backups today — Seafile on my Raspberry Pi still a bit buggy but usable. Took a break at a café, listened to a podcast ☕, then stopped by Shoprite before heading back to the hostel.
#DigitalNomad #SelfHosting #Seafile #RaspberryPi #Backup #CafeLife #Podcast #TravelLife #travel #zambia #africa
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From Laundry to Linux: Two Productive Days in Lusaka
Yesterday (April 30) and today (May 1), I spent some time doing laundry while also setting up my Raspberry Pi with Umbrel OS. I installed the software I need and started backing up my data today, deciding to go with Seafile for it.
I worked on all of this at the hostel, then took a walk to the university and continued in the library. Later, I went to a burger place and enjoyed a Friday deal.
Here are some photos from these two days.
#DailyLife #TravelLife #DigitalNomad #RaspberryPi #UmbrelOS #SelfHosting #Seafile #DataBackup #OpenSource #Linux #Homelab #Privacy #TechLife #HostelLife #UniversityLife #LibraryTime #FridayVibes #Foodie #BurgerTime #LifeUpdate #Lusaka #Zambia #ExploreZambia #LusakaLife #AfricaTravel #VisitZambia #ZambiaLife #LusakaDiaries #NomadInAfrica #WanderAfrica
📍 Lusaka, Zambia
