On termination - there has to be a better way to terminate a 10S4P battery than a huge blob of solder?

Just finishing off a rebuild of one of my 10S4P Reention RK4-type batteries for my ebike, 36V/20A output. It vexes me that after neatly crimping and heatshrinking the whole build, there seems to be no way to terminate the ends of the pack other than dumping a huge amount of solder onto a nickel tab? Something like a spot weldable crimp lug would be perfect but it doesn't seem like they exist other than small ones for BMS leads, is there any better way of doing this?

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u/IHateFACSCantos — 4 days ago

Artificial sweeteners as triggers, anyone else?

I've identified my chronic triggers as cheese and wheat, but I have subacute reactions to a few things. The worst is soy protein, but recently I've noticed I seem to be allergic to the sweetener acesulfame K which is in a lot of zero-sugar drinks. I get really nasty esophageal spasms within half hour of consuming these drinks and acesulfame K is the only ingredient common to them all. I've tried half a dozen different brands as I am trying to get off full-fat coke and same reaction to all of them. But allergies to it seem to be rarely reported in the literature? Does anyone else have this?

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u/IHateFACSCantos — 9 days ago

Drilling exhaust manifold stud into aluminium head for helicoil, wall has fractured, I think into an oil gallery - am I fucked?

u/IHateFACSCantos — 1 month ago

Can someone help me understand what is going on with my earth bonding - should the two on the right hand side be going to the PME box rather than the CU?

u/IHateFACSCantos — 1 month ago

Anyone know of a good engine rebuilders in Notts

Our little Fiat 500 blew its head gasket and now needs the cylinder head planing. I've contacted a bunch of rebuilders but no one is replying, I assume because they want to deal with garages and not shade tree mechanics (same reason I couldn't find anyone to clone our body computer module). Does anyone know of a place vaguely near to the centre that will do this?

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u/IHateFACSCantos — 1 month ago

2011 1.2 model has been very slowly losing coolant with no apparent cause for the past year. Just looked inside the cylinders. RIP

u/IHateFACSCantos — 2 months ago

[Ubuntu 26.04 LTS] Need recommendations for compatible USB fingerprint readers

I am looking at converting all my systems from Windows to Ubuntu. Everything works pretty much perfectly except for fingerprint readers. I have Kensington VeriMark USB fingerprint readers on my machines (047d:00f2), which I am very happy with but currently they are not supported officially or unofficially on any kernel (someone appears to be working on an unofficial libfprint driver for 047d:00f2 but of course I don't know if it will ever be finished).

I'm aware of the fprint supported devices page but I am having a really hard time correlating the chips to any actual USB fingerprint scanners which use them. The only option I can see is the Digital Persona U.are.U 4000 which is much bulkier than my Kensington and much more expensive.

Does anyone know of a small USB fingerprint reader a bit like my VeriMark or one of those little USB plugs that plays nicely?

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u/IHateFACSCantos — 3 months ago
▲ 2 r/minipc

Both of our Trigkey S5 (Beelink rebrand) mini PCs failed within two years, looking for a replacement

We've had quite a disappointing experience with these Ryzen 5700U-based mini PCs. Both had extremely poor speeds from the internal WiFi card that I later proved were due to insufficient EMI filtering. After about a year PC #1 then started hard rebooting in the early hours of every morning, which can be reproducibly resolved by disabling C-states but now the WiFi slot and USB-C port are both dead with no discernible cause. PC #2 has not had any issues with C-states but today started hard locking with no clues present in Event Viewer.

I am thinking of replacing PC #1 with an Optiplex Micro as they are cheap off-lease and have never failed me, but PC #2 lives in a small mini cube sized space that is too small for an Optiplex Micro. But obviously we are wary of buying a Beelink system again. What's the consensus on reputable brands in this form factor, it seems like GMKtek and MINISFORUM are fairly common? We do have a Firebat T8 Plus that's chugging along nicely but the thermals are terrible.

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u/IHateFACSCantos — 3 months ago

Dual hose conversion on a portable aircon unit - heavy buffeting, unsure what is wrong with my design

I have a Whirlpool PACF212HP 12000BTU portable unit that I converted from single-hose to dual-hose through the power of 3D printing, I uploaded my current design and pictures of the assembled kit here: https://www.thingiverse.com/thing:7379346

It works well but the crossflow fan in front of the evap coils is making some quite heavy buffeting noises with the conversion kit attached, even if the hose is not yet attached to the shroud. I haven't got a recording to hand at the mo but it's the same type of noise as when you're driving a car at speed with the windows down. Stuffing socks into the outside edges of the crossflow fan outflow reduces this effect somewhat. I assume there is something wrong with the geometry of my design - it's a simple trapezoid-type duct with about 5cm of plenum(?) depth - do I need to make it into more of a bell shape and possibly a larger plenum size? There is some slight obstruction of the evap coil at the edges where it slots in but it's only maybe a centimetre or so at each edge. The stretch-type foil hose is not trying to collapse so I don't think it is an issue with flow restriction.

Thanks in advance!

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u/IHateFACSCantos — 3 months ago

Synology RT2600ac seems to be having very sudden onset memory leaks

I have an RT2600ac + MR2200ac wired together in a mesh network, with a Pi-Hole serving as the DNS server. About once a week the RT2600ac will suddenly become slow and then shortly after becomes unresponsive, both over ethernet and WiFi, and the only fix is to reboot it. I pulled the Synology proprietary logs off over ssh (it runs kernel 4.4.60 I believe) and in the half an hour or so before it becomes unresponsive it logs repeatedly:

> Jun 29 01:10:02 SynologyRouter synomeshd[10673]: data/data_manager.cpp:62 Failed to collect data: Failed to get rates, error: Failed to get apstats with interface: wifi0, code: 512: Runtime error: Runtime error

and

> Jun 29 01:37:02 SynologyRouter synomeshd_SYNO.Core.System.Utilization[1].get[10673]: data/data_manager.cpp:62 Failed to collect data: Failed to get rates, error: popen() failed, errno: 12, command: /usr/sbin/apstats -r -i wifi1 2>&1: Runtime error: Runtime error

I understand error 12 is generally memory exhaustion but I am not 100% that's what it means here. When this happens it's usually slow loading over WAN, then it becomes unable to contact the Pi-Hole, then LAN connections stop responding - even over ethernet - so the symptoms do kind of fit with resource exhaustion. I don't think it is the eMMC failure that these sometimes get as I have no problem with the router the rest of the time.

Anyway, the obvious next step is of course to figure out where resources are being distributed at the time this happens, but the problem is by the time the router has started bugging out it becomes unresponsive to ssh and I've yet to catch it in time.

I've tried a hard reset of both routers and completely re-made the settings from scratch, and both routers are running the latest SRM, no fix. Before I shitcan these things and buy a Flint 2 can anyone think of anything else I can try?

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u/IHateFACSCantos — 4 months ago

RT2600ac running out of memory?

I am having some problems with my RT2600ac + MR2200ac mesh setup.

  • Occasionally the router pretty much becomes extremely slow and then crashes

  • Often the MR2200ac shows the red indicator and any attempt to look at it in the RT2600ac WiFi point application returns an error about the system being busy and to try again later

  • Rebooting temporary fixes these issues

It seems to be memory related. In the time leading up to the crash there are a lot of logs like this:

> Jun 29 01:10:02 SynologyRouter synomeshd[10673]: data/data_manager.cpp:62 Failed to collect data: Failed to get rates, error: Failed to get apstats with interface: wifi0, code: 512: Runtime error: Runtime error

and

> Jun 29 01:37:02 SynologyRouter synomeshd_SYNO.Core.System.Utilization[1].get[10673]: data/data_manager.cpp:62 Failed to collect data: Failed to get rates, error: popen() failed, errno: 12, command: /usr/sbin/apstats -r -i wifi1 2>&1: Runtime error: Runtime error

With error 12 apparently usually meaning out of memory on most Linux systems? The error 12s don't start racking up until half an hour before the router becomes inaccessible so I'm struggling to get it into a state where I can see what is using up all the memory.

Anyone have any ideas? I have already tried factory resetting both routers and they are running the latest SRM version. I've ruled out the power supply too.

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u/IHateFACSCantos — 4 months ago
▲ 2 r/GlInet

How do the Flint series routers compare to the Synology RT2600ac range wise?

I currently have a Synology RT2600ac with a Synology MR2200ac on the floor directly above it as a mesh, as the RT2600ac isn't quite powerful enough to reach the far corner of the home. The RT2600ac appears to be dying, and being an old router I am not keen on replacing it like-for-like, but I'm struggling to find much else with mesh support. Does anyone know if any of the Flint series are comparable signal strength wise to the RT2600ac?

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u/IHateFACSCantos — 4 months ago

Fiat 500 312 2011, daytime running lights keep melting the socket

The W21/5W bulb is melting the socket when the daytime running light (the 21W filament) is used over an extended period of time. After the first fitting melted I 3D printed an adapter to retrofit and splice a much beefier socket into the headlamp fitting, but a few months later it is toasted again (see picture). This isn't a widely reported issue so this seems to be a problem unique to my car but I am struggling to pin down why it is happening. Someone on fiatforum with a known good car confirmed the bulb is controlled by straight DC so it's not a PWM issue. I've checked that it is getting the correct alternator voltage of about 13.8V, and I checked the bulbs (Bosch branded) on a bench supply and they pull the expected ~2A of current @ 13.8V. I tried converting to LED but unfortunately it looks like the BCM needs current sink resistors for that to work and I'd rather avoid that if I can help it.

u/IHateFACSCantos — 4 months ago

[Windows 11] 'Exclude' split tunnelling intermittently not working

I have Proton set up to disconnect and reconnect at 05:00 every day. Plex and all its executables at 'C:\Program Files\Plex\Plex Media Server' are configured to be excluded via split tunnelling. But in the past few weeks Plex has inconsistently started picking up the VPN tunnel IP for broadcasting Plex remote access after the daily reconnect, which results in Plex remote access becoming unreachable. The only way to fix it is to manually do another disconnect and reconnect through the Proton client, after which 'exclude' tunnelling starts to work properly and Plex will correctly pick up the correct WAN IP outside of the tunnel. 'Preferred network interface' in Plex is explicitly configured as my ethernet adapter (192.168.1.xx) and not the tunnel (10.2.0.2) so I do not believe this is an issue on Plex's end. Has anyone else had any problems like this recently? Running client 4.4.1.

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u/IHateFACSCantos — 4 months ago

Whirlpool PACF212HP 12000BTU portable air conditioner performing poorly

I've been stumped by this one for a while now. This unit is quite different to the usual tower portable ACs in that it has a crossflow type fan on the cold side and a centrifugal blower on the hot side. I got it for free as the crossflow fan was barely spinning - found the motor coupling worked loose and somehow that also led to the GPIO pin controlling VSP to burn, which resulted in it being stuck at the slowest setting.

After quite a lot of work I was able to able to get the system running properly again - I built a bypass circuit to restore normal speed selection to the crossflow fan. Now it works, it gets a bit cold... but not very cold, while the hot side is very hot. It is only dropping room temp by about 3 degrees celsius. I have a 7000BTU unit that in the same setup can drop by 6+ so something clearly isn't right.

So I have thrown quite a lot of money at this thing, cleaned all the coils, added insulation which it was sorely lacking, and today I have converted it to a dual hose unit with the magic of 3D printing - so it now has a 6" hose in and 6" hose out. But it's made very little difference to its performance. The problem is that I don't know how well it performed when it was brand new so I have no way of knowing if it is worth having a charge valve fitted to check pressure or if it is just a shit design that isn't worth pursuing. I am wondering about a refrigerant leak (it uses R290) but it hasn't really gotten any worse over the past year and there are no signs of oil leaking or anything like that. I know these units gradually lose effectiveness with age anyway but this one was only manufactured in 2022.

Any ideas?

[Edit] I have added some pics of the innards to ImgBB here. I've just noticed that the exhaust air is getting so hot that the exhaust vent is actually deforming. Also note the mess of cable ties near the compressor is to stabilise the pipes as they are poorly supported and vibrate rather a lot otherwise.

u/IHateFACSCantos — 4 months ago
▲ 0 r/ebayuk

[UK] Simple delivery, any way to only allow Royal Mail 24?

When selecting only Royal Mail, simple delivery by default offers only Royal Mail 48, with an optional 'express' option for Royal Mail 24. I've personally found Royal Mail 48 to be consistently shit, parcels disappearing for days at a time or sitting at the post office doing nothing in particular, whereas Royal Mail 24 is consistently on point provided you drop it off before last collection. Is there any way to just force Royal Mail 24? I'd rather do that and just absorb the costs as it gives a better experience for the buyer.

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u/IHateFACSCantos — 4 months ago

Anything resembling a command line interface (like the Linux CLI) on Windows?

I'm trying to automate a lot of elements of my VPN connection on Windows 11. The difficulty with this is that there's no way to interface with it other than through the app, so you have to sniff the log files to get port numbers (which is difficult to do reliably as the app rotates the log files) and if the VPN gets stuck in a disconnected state the only thing you can really do is brute force kill the process and all the Wireguard processes, restart, and just hope it connects properly this time.

Is there a CLI coming for Windows? Or is there some other way to control the app other than through the UI that I'm not aware of?

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u/IHateFACSCantos — 4 months ago

Portable AC unit performing poorly and struggling to figure out why - Whirlpool PACF212HP 12000BTU

This unit has a crossflow fan on the cold side and a centrifugal blower on the hot side. When it came to me it was faulty, it had the complaint of no air being pushed out. The coupling to the crossflow fan blades had loosened and somehow this resulted in the GPIO pin on the MCU being fried, so I added a small circuit to bypass the speed control mechanism with a physical switch and repaired the coupling. I also had to replace all the switches on the control panel so although it's only a few years old it seems to have been heavily used.

Now it "works", in that both fans are blowing at max speed, the compressor runs (albeit is a bit noisy), and it produces cold air if you're stood right next to it, but it's very lacklustre in terms of cooling the whole room. It drops the room temp by maybe 2-3 celsius. It's a 12000BTU unit in a 12m^2 room with a 3 metre hose vented out the window. For comparison, I have a 7000BTU unit sat next to it for testing which is able to bring the room temperature down by about 6 celsius while using about 1/3 of the power. So I'm struggling to figure out whether this is just a crappily designed unit or if there's some other subtle problem with it, or maybe it is just generally reaching the end of its life?

The coils are clean, if a little bashed up at the edges. Beyond just generally not performing well, the only symptom of note is that the side of the unit with the exhaust blower gets VERY hot. I know these single hose portable units are not very repairable so I'm resigned to the fact I will probably just need to replace it with a better one, but can anyone think of anything else I might have missed before I do so? Here are a few pics of the unit in various states of disassembly: Whole unit 1, Whole unit 2, PCB front, PCB rear

u/IHateFACSCantos — 5 months ago

This is not the place to promote, or conduct market research for your vibe-coded allergy tracking app.

I know to most of you this is oddly specific, but there has been a real uptick in threads being posted both on r/hayfever and other allergy subreddits from vibe coders who are looking to monetise whatever brand of slop they've "developed", and it is crowding out meaningful discussions made by real people. Please knock it off, it is usually pretty obvious what you are doing and if we suspect posters of doing this then we will be removing their posts without warning.

To readers - I would be grateful if you could hit the report button on anything that looks questionable. Thanks

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u/IHateFACSCantos — 5 months ago

I have had CTS in both elbows for about 10 years with all the usual symptoms (pain at the rear of the elbow being by far the worst), it started one night at age 22 when I was working triceps at the gym and for whatever reason it just never went away. Back then they wouldn't give me surgery because my nerve conduction test was normal despite being symptomatic and having no response to painkillers or physio, so I have basically had to adapt to it by avoiding doing anything physical. But with AI automating my white collar job out of existence I am going to have to move to physical labour, which is obviously hard to do when even one day a week working on my car results in my elbows screaming at me. So I've been put through for a new referral. Has anyone on the NHS had any stories about trying to get a decompression performed? So far I have gone from GP -> Physio who referred me straight to musculoskeletal - physio referred with a recommendation for surgery given longstanding symptoms and already failed to respond to physio in the past. I can't imagine it is any easier to get the surgery than 10 years ago what with the state of everything but I am hoping their comment will work in my favour.

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u/IHateFACSCantos — 6 months ago