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835 results for “thomasjsn”
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TL;DR: Winter-Thomas needs to stop writing checks that summer-Thomas has to cash — especially when summer-Thomas would rather be outside than rebuilding a broken Ceph cluster in the basement.
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TL;DR: Winter-Thomas needs to stop writing checks that summer-Thomas has to cash — especially when summer-Thomas would rather be outside than rebuilding a broken Ceph cluster in the basement.
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TL;DR: Winter-Thomas needs to stop writing checks that summer-Thomas has to cash — especially when summer-Thomas would rather be outside than rebuilding a broken Ceph cluster in the basement.
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TL;DR: Winter-Thomas needs to stop writing checks that summer-Thomas has to cash — especially when summer-Thomas would rather be outside than rebuilding a broken Ceph cluster in the basement.
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TL;DR: Winter-Thomas needs to stop writing checks that summer-Thomas has to cash — especially when summer-Thomas would rather be outside than rebuilding a broken Ceph cluster in the basement.
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After two years of #roadtripping in #Norway, first with Airbnb and then tenting — we have bought a teardrop #camper; A #HeroCamper 😀
With a rooftop tent on the car and a rooftop tent on the trailer, we have three bedrooms with sleeping space for six people.
It's a pretty awesome looking things, with lots of clever solutions. We named it Rulle (Norwegian for Rolly).
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After two years of #roadtripping in #Norway, first with Airbnb and then tenting — we have bought a teardrop #camper; A #HeroCamper 😀
With a rooftop tent on the car and a rooftop tent on the trailer, we have three bedrooms with sleeping space for six people.
It's a pretty awesome looking things, with lots of clever solutions. We named it Rulle (Norwegian for Rolly).
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And here is the blog post. I write about the differences between the old and new #keypad, and the alarm panel implementation in my #RaspberryPi #Python alarm system code.
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Here is a demonstration video of the new #keypad in action, using both PIN and RFID.
https://iframe.mediadelivery.net/play/175117/990b7b3e-5df4-4445-b433-a39481eca151
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On my #RPiSecuritySystem — I started with a simple #Zigbee #keypad that could only send actions. I have later replaced it with a more advanced one, that can also receive states and supports RFID. (And looks much cooler) 🤓
I am working on a blog post to explain how it is integrated with my system.
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It's been three years since I last posted about my #RaspberryPi security alarm project. The project is alive and well, constantly developed, and used daily.
Here is my attempt at breaking the writer's block and get it documented:
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Lots of things changed in my #homelab the last few weeks.
- Replaced the Lenovo Thinkstation E32 node
- 4 #Proxmox servers in cluster
- #ProxmoxBackupServer with qdevice
- Each server having 2x #10Gbit, one being a dedicated SAN network
- Enterprice NVMe for ZFS datastore
- Replaced all fibers in the rack with DACsI'm seeing high temperatures in both my SFF nodes. Need to figure out a way to push some more air in. No fan headers, so I've ordered some #Noctua S-ATA to 4-pin adapter (NA-SAC5).
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Ordered lots of things for the #RPiSecuritySystem project:
- Flush mounted buzzer/sounder for the entryway, to replace the homemade one
- More fire alarm stuff; interface card, two more smoke sensors and a laser tester
- Ceiling mounts for the Bosch #PIR sensors, to use in the basement -
The new #Oscilloscope is in place and operational 🥳 ESD mat has been replaced (from 90 to 120 cm long). And is connected to ground 🙂
Now for celebratory cup of tea 🍵
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New wireless keyboard and mouse for the #ElectronicsLab have arrived.
ESD mat and oscilloscope is heading this way 🙂
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Ordered stuff to upgrade the #ElectronicsLab 😀
Wireless keyboard and mouse, Logitech MX Keys Mini and Signature M650 Large.
A bigger ESD mat, 120x60 cm, instead of 90x60.
Siglent SDS804X HD 4CH 70MHz 12bit Oscilloscope 🥳
https://www.siglent.eu/product/13555385/siglent-sds804x-hd-4ch-70mhz-12bit-oscilloscope
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Here we can see the different stages of the #battery test period, and recharging after.
From the left; the pulse stage, were the voltage varies from 12.7V - 14.4V.
Then we see the test period, where the voltage drops until the battery reaches 50%.
Now charge stages; bulk (ramping up to 14.4V), absorption (keeping 14.4V), analyze (check if dropping below 12V) and float (keep 13.6V). After 10 days of float the pulse stage starts again.
#CTEK has this well documented in their user manuals.
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Three voltage levels are measured in the #RaspberryPi alarm system: 5V, 12V auxiliary and the battery voltage.
A drop in the 12V auxiliary is used to detect a mains power failure.
The battery voltage is used to estimate battery level, this is done with a dictionary of voltage to percentage where the missing values are interpolated with scipy.
Once a month a battery test is performed, where the charger is stopped, and the battery voltage monitored until it reaches 50%.
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Using my oscilloscope to debug yesterday I (again) realized that I need to get a new one. The one I have is about 20 years old.
Anyway — that motivated me to cleanup the electronics desk and replace the ESD mat. Only to realize the new mat is a bit short. So I guess I'll be ordering a new one.
The desk is spotless at least 🧹
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It looks like I've also found the reason why the voltage measurements by the #arduino was so unstable.
Simply a user error — wrong size load capacitor, mounted too far away from the voltage reference. Soldered on a new voltage ref. with load and input capacitors, very close and correct values this time :)
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I've spent the last few days working on my #RaspberryPi security system. This house used to have phone outlets here and there, I've repurposed some of those for a hidden buzzer/sounder.
One in the 2nd floor den, and one in the main living room. They can do two sounds; continuous 970 Hz and 800 to 970 Hz sweep 1/s.
Still have the "homemade" buzzer in the entryway. Going to replace that as well :)
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After only a few evenings' work — I am getting close to seeing my desk surface again 🥳
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On my #RaspberryPi security alarm: I will be replacing all #Aqara motion sensors with #PhillipsHue — they seem to be more reliable, have better battery life, short cool-down and I like the mounting options better. 3D printed corner mounts!
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On my #RaspberryPi security alarm: I will be replacing all #Aqara motion sensors with #PhillipsHue — they seem to be more reliable, have better battery life, short cool-down and I like the mounting options better. 3D printed corner mounts!
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I'm using an old #RaspberryPi 2 and a DS18B20 probe to accurately measure outdoor temperature. Value is sent on #mqtt to @homeassistant, and displayed on our #dakboard digital calendar 👍 https://blog.cavelab.dev/2024/11/rpi-outdoor-temperature/
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Using @homeassistant I'm setting the clock on our #Komfovent #ventilation system once a week — to prevent it from drifting. https://blog.cavelab.dev/2024/11/set-komfovent-time/
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It only took me 30 minutes to implement #PageFind, and it produces nice looking results right out of the box. Amazing! https://blog.cavelab.dev/search/
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I recently acquired some new #knipex and #wera tools. https://blog.cavelab.dev/2024/02/new-tools/