lemann
@lemann@lemmy.dbzer0.com
- Comment on Waveshare's Latest Sensor Adds a Thermal Camera to Your Raspberry Pi — or Any Device with a USB Port - Hackster.io 2 days ago:
IMO more accurate presence detection. Common sensors like PIR and cheaper doppler radar types can detect when there’s motion, but not if a user is present but not moving in the detection area (e.g. sleeping or sitting). There’s also open source projects that can track bluetooth wearables & phones to know who specifically is in a room, but these aren’t able to detect people with no devices, say guests and kids.
The preferred approach at the moment is a combination of sensors to cover motion and person detection separately, which comes at a cost, both on your pocket and the time needed to get it working suitably for your needs, or maybe one of the more expensive radar sensors like the FP2 that can detect where in a space is occupied with higher accuracy than more affordable alternatives
The thermal cam is roughly in the same price range as the FP2 - however since it has I2C, something cheap like an ESP8266 can be used to turn it into a WiFi based presence detection sensor. Something like an ESP32 could be used to turn it into a presence detector and wearable tracker, negating the need for another separate sensor entirely.
Something like this would probably be quite close to plug and play for someone DIY focused, and wouldn’t have the same problem as radar being able to see through walls to different areas, although this is somewhat solved by surrounding the rear of the sensor in foil with caveats.
I’m interested in how it performs outdoors in rain though, a lot of existing affordable sensors (except PIR) struggle a little in wet conditions, with doppler based ones not detecting anything
- Comment on Waveshare's Latest Sensor Adds a Thermal Camera to Your Raspberry Pi — or Any Device with a USB Port - Hackster.io 2 days ago:
Yepp I agree lol, coverage about him/his companies gets old really fast…
Even worse when its stuff like laying off the one of his companies’ most profitable business units over a childish disagreement 🤦♂️ just to reverse the decision after reporters start spamming his antics everywhere, leading to more spam.
Feel like he likes to see his name in the news or something, very tiring IMO
- Comment on Waveshare's Latest Sensor Adds a Thermal Camera to Your Raspberry Pi — or Any Device with a USB Port - Hackster.io 2 days ago:
The !electronics@discuss.tchncs.de community would be a better fit for this post IMO
That said this looks interesting, and seems really competitively priced when compared to other similar thermal cameras like the Flir One Gen 3. This measures a very wide temperature range too, from -20°C to 400°C within ±2°C, whereas the Gen 3 tops out at 120°C.
The 80x62 resolution is OK for this application IMO, the Gen 3 is similar at 80x60.
I wouldn’t go recommending one of these to a “casual” user though, it’s very much a development product. Non-casual users could probably 3d print a case and get on just fine with the demo apps IMO, and for those users this would probably worth its weight in gold, given how expensive thermal imaging usually is.
Given how closely its priced to radar presence sensors like the Aqara FP2, and the inclusion of I2C for comms, I think this is going to have some appeal to DIY home automation enthusiasts too, especially if it gets supported by open source projects like ESPHome
Technical docs: www.waveshare.com/wiki/Thermal_Camera_HAT
- Comment on trying to fix a wifi antenna need some help 😅... 3 days ago:
I recently setup a Meshtastic lora node and realized antennas are complicated… I never knew there were ones that are most resonant on specific frequencies and stuff, the importance of having the impedance close to 50ohms for best performance. And fake amazon ones that give you only 8cm of antenna wire inside a 37mm shaft 🤦♂️
That said, I am shocked that something the size of my thumb can communicate 1km through buildings, and uphill to the other side of my village on such low power. This radio stuff is really fascinating.
- Comment on Rabbit R1 AI box revealed to just be an Android app 2 weeks ago:
If the Humane could recognise speech on-device, and didn’t require its own data plan, I’d be reasonably interested, since I don’t really like using my phone for structuring my day.
I’d like a wearable that I can brain dump to, quickly check things without needing to unlock my phone, and keep on top of schedule. Sadly for me it looks like I’ll need to go the DIY route with an esp32 board and an e-ink display, and drop any kind of stt + tts plans
- Comment on YouTube's war against third party apps is just as ridiculous as its war on adblockers 2 weeks ago:
Freetube, piped, invidious work great on desktop too
- Comment on After 16 years, Ecobee is shutting down support for the original smart thermostat 2 weeks ago:
16 years old? That thermostat has sure had a run, must have been designed pretty well to last this long without some electronic failure.
Assuming it’s cloud connected, anyone aware whether it got updates for the newer versions of TLS and root certificates? I’m aware quite a lot of android devices from that era have expired certificates now, and outdated/vulnerable SSL libraries…
- Comment on 2mm thick layers on a trophy cup 2 weeks ago:
Feed that beast into a CPAP cooling duct setup, the part will pretty much go flying across the room when bridging lol
- Comment on Whistleblower 'would not' put family on Boeing 787 jet 4 weeks ago:
Boing
When the plugdoor hinge consultant is asked how to spell Boeing
- Comment on [deleted] 5 weeks ago:
looks at username
Hallucination checks out /s
- Comment on Elon Musk just gave another Mars speech—this time the vision seems tangible 5 weeks ago:
This may be a better fit in !business@lemmy.world instead IMO
- Comment on Court Bans Use of 'AI-Enhanced' Video Evidence Because That's Not How AI Works 1 month ago:
My disappointment when I realised “4k” was only 2160p 😔
- Comment on Lemmy.ml is acting as a proxy instance for Hexbear and should be defederated by any instances that defederate from Hexbear 1 month ago:
Thank you for the extra info and clarification!
- Comment on Lemmy.ml is acting as a proxy instance for Hexbear and should be defederated by any instances that defederate from Hexbear 1 month ago:
This kind of stuff is making me consider stopping my donations to the Lemmy project, and instead donating to the Sublinks drop-in replacement developed by the programming.dev instance admins
- Comment on Confused about bot scanning my domain 1 month ago:
Something is wrong with the tagginator in this thread, seems to be creating dupe posts every 1 min?
@db0@lemmy.dbzer0.com
- Comment on Twstalker: new twitter frontend 1 month ago:
Yepp I agree, especially on that last point, the name choice is a bit unusual for something that is just a third party frontend.
- Comment on Confused about bot scanning my domain 1 month ago:
Yepp sorry - what I meant was bundling multiple different root domains, e.g.
example.com
&example1234567.org
in the same cert.I currently do as you mentioned above, renewing with just one root and its accompanying subdomain wildcard.
- Comment on Confused about bot scanning my domain 1 month ago:
If anyone is interested in mitigation, the only way around this AFAIK is to start with a brand new domain, only use wildcard certs (with DNS validation), and don’t bundle multiple renewals into a single cert.
Also, don’t enter your domain or related IP address into dns reverse engineering tools (like dnsdumpster), and check certificate transparency logs (crt.sh) to see what information related to your cert renewals has been published.
This won’t stop automated bots from scanning your ip for domains, but should significantly reduce the amount of bots that discover them
- Comment on This was the first result on Google 1 month ago:
May be a better fit in !mildlyinfuriating@lemmy.world or similar
- Comment on Owners of a domain, which domain registrar did you choose and why? 1 month ago:
Curious about your reasoning, especially as I bought a .dev for myself a while back (via a different registrar)
If it was in regards to the .zip TLD then I guess that is understandable, but .dev seems harmless IMO
- Comment on Why is it dangerous to chain power dividers? 2 months ago:
Are you talking about extension cords with multiple outlets at the end?
The wire inside the cord could be of unknown quality - typically these can be either really thin copper wire, or aluminum/steel which are not ideal. The cord can get hot under heavy use, and in a worst case scenario, melt and start a fire.
Too many extension cords chained together can cause the mains voltage available at the end of the cord chain to drop, due to the resistance of the wires adding up.
Each individual plug and socket are potential failure points, and like the cord, the materials used for the socket’s contact pins may be less than ideal. The less of these loose points you have chained in any kind of electrical system, the better. The resistance at these points may also cause the contact pins to get hot under heavy use, causing the plug to loosen over time.
Typically the fuse breaker should cut out and protect the wires before anything dangerous happens - but IMO better safe than sorry.
I might have done a poor job of explaining this… hopefully someone else provides a clearer description
- Comment on What's the deal with Docker? 2 months ago:
Not exactly IMO, as containers themselves can simultaneously access devices and filesystems from the host system natively (such as VAAPI devices used for hardware encoding & decoding) or even the docker socket to control the host system’s Docker daemon.
They also can launch directly into a program you specify, bypassing any kind of init system requirement.
OC’s suggestion of a chroot jail is the closest explanation I can think of too, if things were to be simplified
- Comment on Should Caddy and Traefik Replace Certbot? 2 months ago:
I use certbot on only a single one of my oldest projects that has been going for almost a decade.
For everything else I use acme.sh because it works so well and integrates with a ton of DNS providers. The one time I had an issue, it was already fixed in a PR, so I just checked out that fixed version and used it for renewals until it was merged in.
- Comment on Europe's biggest 3D-printed building rises in just 140 hours 2 months ago:
From what I understand (based on smaller printed buildings anyway) it’s identical to FDM 3d printing pretty much, except that instead of filament, a massive onsite silo contains a liquefied cement-like mixture. The nozzle also has a valve of some sort to immediately stop flow.
Typically one operator has a computer running the printer host software, and others manually fix-up print errors (and things like blobs) while the mixture is still damp. A paperclip shaped rebar is also inserted into the walls every few layers for additional structural integrity
There are challenges with things like rainfall retention in walls during construction, but various companies have their own way of dealing with that from what I understand…
Due to the mixture it’s usually restricted to walls AFAICT. Overhangs like doorways need beam supports to be inserted into the structure beforehand
- Comment on Wyze says camera breach let 13,000 customers briefly see into other people’s homes 2 months ago:
Not the commenter you replied to, but these kinds of systems are usually “fail open”: if there is unexpected loss of power, all applicable doors are released/unlocked.
Some more complex systems will have specific doors automatically shut in the event of a fire to try and keep it contained, depending on local regulations
- Comment on Why Charging Your Gadgets Over 80% Is Such a Bad Idea | iFixit News 2 months ago:
Literally. It even extends to other Lithium based chemistries too, like LiFePo4.
It’s not like this information is hiding either - ask a battery manufacturer/distributor for a Li-ion cell’s charge cycle data, what you’ll find is most manufacturers only guarantee 300-500 cycles before the battery has lost 80% of its usable capacity at 100% DoD and charging to the 100% SoC voltage. Decreasing just the maximum SoC to 90% brings massive battery longevity gains, where estimated cycles increase to 1000 (and beyond in some cases), while still retaining over 80% of the battery’s usable capacity.
All my personal devices that I’ve checked sadly target 100% SoC voltage and charge rate, without regard for the longevity of the battery. Just seems almost like they’ve just punched in the numbers from the “ABSOLUTE MAX RATINGS” part of the datasheet and called it a day.
It’s a little disappointing that a lot of people are under the belief that their product has been designed to last as long as it can, when in most cases this intentionally or accidentally isn’t the case right now, in industries outside of backup power and EVs
- Comment on Why Charging Your Gadgets Over 80% Is Such a Bad Idea | iFixit News 2 months ago:
All BMSs I’ve come across have this disabled by default sadly, manufacturers seem to target longest device runtime, rather than extended battery longevity
On my FP3 it needs to be enabled in a terminal, while rooted (newer devices have it in the settings).
On my Steam Deck it also needs to be enabled in a terminal, the exact command differs depending on the model of steam deck. An embedded developer or tinkerer will find it very quickly in the kernel sysfs though
- Comment on The Tech Plutocrats Dreaming of a Right-Wing San Francisco 2 months ago:
It is scary to think that people with this much money and influence can be so unhinged - inciting others to make death threats to your city leaders, then proudly tweeting afterwards “I don’t care”.
Claiming to be interested in funding schemes to solve homelessness, drug use and crime, in addition to additional police, seems kind of nefarious. What essentially boils down to arresting and manhandling individuals that have no money to their name doesn’t surprise me coming from a CEO
I pretty much agree with the article writer here:
Tech bros like Tan think they are reinventing whole systems, conjuring terms like “effective accelerationism” to describe their philosophy. But the ancient Greeks already put a name to their core ideas over 2,000 years ago. For example, there’s plutocracy, or rule by the wealthy, and autocracy, rule by dictatorship.
CEOs like this are aiming to indirectly rule/control others with their money
- Comment on Windows 11 24H2 goes from “unsupported” to “unbootable” on some older PCs 2 months ago:
Freetrack in my simulation games is why I still have Windows on my old gaming desktop - the tracking protocol that those sims use isn’t supported under Linux 😔 as well as another that specifically looks for the Logitech G hub to interface with the wheel.
Aside from the simulators, I’ve been gaming on Linux on my deck and haven’t run into any issues at all, especially with Proton-GE handy to run “unsupported” titles
- Comment on Windows 11 24H2 goes from “unsupported” to “unbootable” on some older PCs 2 months ago:
Having less personal time and rising electricity costs has made the Deck my primary gaming machine lol.
I don’t support games with DRM, so pretty much everything I play works flawlessly on it (as well as “unsupported” titles via Proton GE)