FlyForABeeGuy

joined 2 years ago

I wish ! But architects and building engineers you know. The building sector is filled with mysteries beyond logic. For example, I still don't know why it's such a hassle to have real HVAC in centralised ventilation systems in Europe. Or integrated solutions to move energy to other systems (like my water heat pump releases cold. Why am I out of warranty if I place a heat exchanger that cools my fridge heat exhaust on the air rejection?). Without floor heating air-water heat pumps aren't super efficient, and retrofitting baseboards with water-heated ones for baseboards in a bitch to do.

[–] FlyForABeeGuy@lemmy.dbzer0.com 3 points 5 days ago* (last edited 5 days ago) (2 children)

Ventilation systems are named a bit weird like that:

-System A is natural convection (like holes in the walls)

-system B is holes in the walls, and a motor brings fresh air in the building

-System C is only a centralised extraction (needs rosters in your windows so you have an air intake, so basically an energy-label-certified-hole in your brand new windows)

-System C+ is centralised extraction with a variable debit depending on CO2 and humidity detected (so it is less energy wasteful than the previous one)

-System D is a double flux system: one centralised unit with a heat exchanger built in. There are 2 circuits, one is fresh air and the other one is air extraction. the house is basically always a bit over-pressurised. It is possible to obtain also humidity regulation for the winter if needed (ex build-in humidifier or enthalpy exchange units). When testing for build quality in passive houses, they check that almost all air exchange goes only through the unit

-System E: System C+ with a heat exchanger connected to a centralised heat pump for the building. Never seen one outside of an expo room.

If I understand it correctly, the numbers only change because when they do the energy and house energy rating certifications in each country (because the details in the energy ratings are different in each country). Managed to trick it tho, but it changes the unit to a german id but with the same serial. So certification wise, it is the paper that comes with the unit that counts, not what the unit says

[–] FlyForABeeGuy@lemmy.dbzer0.com 8 points 5 days ago* (last edited 5 days ago)

[Update]

So used my old rooted tablet to tweak around a bit with the app. Through lucky patcher (when logged in with the test account) I noticed that the downloads are done trough the root user of android. After that I used MiXplorer to get the data files on my pc. Quickly found the structure of the files. Couldn't trick the system to access my local files, but I managed to trick the system into updating as if it were a german system.

So if someone else happens to look and stumble upon this, this is how I got it to work. It works only from a rooted android device for now:

  • Login with the german test account to access server downloads
  • Connect to the cloud delivery system and download the update that you want
  • Close the app, with a root file explorer (like MiXplorer + Shizuku) go into the root folder (use their FTP server with a root allowed user or whatever to transfer it more easily to the PC).
  • Go to /data/data/com.zehndergroup.comfocontrol/files/products/1/R1.12.0-DE -Open the meta.json file and change the german id of your unit to your unit. Ex: 471502013 to 471502023 for the UK id. Save it and send it back to where it came from. You could just update your unit, and it would keep the same serial number, same everything but would be under german ID. Easy for new updates but annoying to explain if you need to have a technician over and he is wondering why your unit has that ID. But then again, that is a minor detail and I'm not even sure the technician will be paid enough to care. Reverting to your national number should be the same process but with the update for your country.

What didn't work: *Open the config bin file of your unit (so again, for the Q600 : config_R1.12.0_471502013_v1.bin ) with a hex editor. Look for the unit number that needs to be replaced (so here 471502013 needs to become 471502023). I only needed to replace 1 number (a 1 into 2) , so 31 became 32 in the hex file. Replace the country code with your local one in hex (So DE into UK). Save it and send it back from where it came from. This provokes an error after the 3rd block. Probably a checksum that isn't cooperating in another file *Seperate API connection: the naming pattern o their website is obvious, but connection without their app is something else

  • Firmware updates for the ventilation units are in folder "1", maybe that will change in the future
  • The downloaded firmware update will be there under it's own folder (like R1.12.0) and sometimes there will be it's own ZIP
  • National ID for your unit is on Zehnder's website but also under "basic mode" > "unit status" > "Article unit"
  • The installers pin code changes from your countries to the German one, so it becomes 4210

PS: there are ati-bricking measures in place in the system. If an update fails, you can Erase the firmware and reupload it but you'll have to redo the post-install setup

 

[Update in the comments]

Hello all! I've got a controlled mechanical ventilation system (system D) at home from Zehnder (ComfoAir Q600). I've even got their controller box (the LAN-C) so I can use smart home stuff with it. It works perfect on home assistant, even when blocking the controller on the router level from the outside world. Maintenance wise, they try to force a contract on you, but it is easy peasy to maintain and repair so I'm not having no maintenance contract.

Comes the issue of software and updates. Some updates come with features. Sometimes, they are even mandatory so addons can work on them (ex: small heat pump for the intake needs a recent version for setup). For this, you have to use their app on your phone/tablet. The whole idea is that the install goes trough your phone (with checksum check through the app) to the EEROM on the local network to prevent bricking of the unit. Updates bring usually nice settings, and are sometimes mandatory for some add-ons (ex: heatpump for pre-heating or pre-cooling needs a recent update to be set up).

Here comes the really annoying part that makes me grump a lot: to update, of even for some diagnose option, you need to access a special level. Not the beginner mode. Not the expert mode. Not the installer mode that is unlocked with a simple pin code available in the owner's manual. No sweet child, you need to be a registered installer with Zehnder to access to get updates and real diagnostics. Officially, it is to prevent bricking the controller with an update by an user. But it is possible to give access to a licensed installer so they can update remotely and run diagnostics. So an issue with your internet, and there is no more safeguard to protect you from bricking stuff. Really, it is just to force a maintenance visit (200€ to exchange filters and clean a bit the exchanger and the inside with some soapy water). I don't like to bend over while I'm getting fucked without my consent, so you guess while this pisses me off. I called once to get an update (some companies ask you a hefty sum for that), but instead of getting an account they just updated it once exceptionally.

There is tho in the official documents for Germany, a test code publicly accessible, that allows you to access diagnostics and updates. But the updates there are only for German units. Pretty sure it is the same unit for the whole damn continent, but hey, let's pretend the units are different.

Comes my question: how do I trick the system into believing their update is not for the germans, but for somewhere else? Or even better, to give me access for updates for other areas? I know part is server side (account), but I'm willing to bet they don't really care about securing access to the updates once you have authenticated yourself (with the german test code). Tried lucky patcher, but didn't get lucky.

Any idea what I could try (even Lucky Patcher wise)?

Big hugs and kisses

[–] FlyForABeeGuy@lemmy.dbzer0.com 3 points 4 months ago

To add to the previous comment: netherlands but there is an housing issue. Belgium has in military the FN Herstal weapons manufacturing plant, and a few stuff linked to NATO. But on a healthcare level, there are loads of pharma companies (GSK, Johnson, UCB, Solvay, Viatrus,... ). France has Dassault, so there is loads linked with military and software alike. And they have Sanofi in healthcare.

Big companies will go through bigger loops to help you with a visa. But in any case a lot of specialities can recieve fast tracked visa applications

[–] FlyForABeeGuy@lemmy.dbzer0.com 6 points 10 months ago

That's just because he's missing a piece or earlobe and can't hear anything correctly! That's why he was saying that cats are getting eaten by immigrants too. The original poster talked about pussies, not cats

[–] FlyForABeeGuy@lemmy.dbzer0.com 6 points 10 months ago

Like it's written ! But in a totally logical way like gif. Some "m"'s are pronounced as "n"'s, the prononciation of the "l" and "y" are exchaned, and at the end you have to insist on the last letter

[–] FlyForABeeGuy@lemmy.dbzer0.com 13 points 1 year ago (1 children)

That's how you can easily provoke fat bloom (the metastable phase beta 5 isn't the most stable and will stabilize into beta 6 in the fridge, allowing previously locked fats in the cristals to be freed). This alters the taste and makes it more prone to oxidation

Hey! You are both right! Queen and bee cages are made of plastic or sometimes wood and metal mesh. But having protective cells can be useful. If you add a queen-cell in a colony a few days before birth, that queen will almost always be accepted. In case of mated queens, their pheromones are strong enough that they will be often (but less probable depending of the season and presence of young larvae) accepted. Usually we put mated queens in a cage with some sugar so that the bees eat trough it, giving time to the queen to disperse her pheromones. Virgin queens however have the lowest acceptance rate, and it is sometimes better to re-encage them in a (now plastic) cell with a wax cover so that she will be born again. For the foundations, it is a little more difficult than just pressing at the moment, but the size of most of frame-standards would impose the use of huge machines. But it would be less human-energy consuming than the actual method

Hey! I managed to draw a little bit and to solve the cage and cover. The only issue is with the little hinge, but nothing impossible to solve. If you want to, you can always correct my messy stuff if you see improvements ! https://www.thingiverse.com/thing:6557850

No existing model, but it wasn't that hard to replicate at the end

Took me a little more (the bottom of the cells are difficlt to draw and there aren't a lot of files with the right bottom), but at least now I'm not scared to solve some stupid issues that always frustrate me by drawing and printing easy solutions!

 

So I'm a beekeeper and we have to continuously adapt our tools to change and predators. For the fight against asian hornets, the 3D community has been really helpfull and most of the stuff can be printed at home with a small 3D printer.

However, for other stuff, such as mechanical treatments against Varroa (a nasty parasite responsible for a lot of diseases and death in bee populations), usually you can open your wallet and pay an excessive amount. Because the alternative is death and being a menace for other beekeepers and solitary bees.

There is for exemple a little cage that is usually used to rear queens. One fellow misprinted it, and has noticed that it blocks the development of the laid eggs into larvae (he left 7mm oh developpment height instead of 8mm). This doesn't harm the queen or colony, and blocks reproduction of the parasites. After 28 days, there are no more larvae in the hive, all the parasites are exposed, and we can treat once the population kill off the nasty buggers. It is also an efficient way to sample parasites for the development of varroa-resistant lineages of bees (because we need to infest those with the parasite and then check if it is resistant or not).

Of course, that little cage that was misprinted is now under a patent, and is sold way to expensively for what it is (10 bucks, it's not food-grade certified and the lock breaks way to easily). I do not mind paying for somebody's work, and fair is fair, but slapping a patent on a item that exists since decades because you slightly modified it and selling it expensively while manufacturing it on the other side of the world is a little too much for my liking. I know it's how the world works, but that doesn't mean that I have to roll over.

Anyway, I've got some bought cages, and the patent. How would I go to make a STL file to print it afterwards? It's made of a box with the hexagonal frames and some dead space for the queen, a lid to allow workers to move and a little lock. 3D Scanner? Drawing it from zero on FreeCAD with the patent and the cage next to me? Praying to Chtuluh to send me magically the file with a carrier pigeon? Or am I forced to go looking at an far-eastern webshop with a bad carbon footprint, where they sell it for 3 bucks a piece?

 

Hello you awesome people,

Friends are having a boy and everyone they know wants to push a name on the child. So I decided to be the best friend they could have and to offer only bad, ugly or horrendous names to the lucky parents so they could have a laugh. I already send them some names and dictators, Smeagol, Steve and Juan-Esteban.

So please, people or Lemmy, give me the worst names you could give a child, so that I can help them as a good friend!

Ps: don't worry, I've already planned some meals to drop off when the gremlin will be there to feed the parents. And some take-out vouchers so they won't get food poisoning

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