elDalvini

joined 2 years ago
[–] elDalvini@discuss.tchncs.de 39 points 2 weeks ago

This seems to be an engineering sample CPU. Since these are pre-production, that could mean it's basically a fully functional CPU. It could also have serious issues.

[–] elDalvini@discuss.tchncs.de 3 points 2 months ago (1 children)

You can use most of the connectors you would use for bigger wires. Wago lever nuts are rated for conductors as small as 0.14 mm².

If you want something to fit a din rail, standard terminal blocks (something like this) should also work.

[–] elDalvini@discuss.tchncs.de 88 points 2 months ago (8 children)

Alt text:

ISO 8601 was published on 06/05/88 and most recently amended on 12/01/04.

[–] elDalvini@discuss.tchncs.de 5 points 2 months ago

From the IRF1404Z data sheet:

Calculated continuous current based on maximum allowable junction temperature. Bond wire current limit is 120A. Note that current limitations arising from heating of the device leads may occur with some lead mounting arrangements.

You need to design the PCB so that the heat from the legs can be properly dissipated, or they won't live up to the rated current.

Also, traces on a PCB are much thinner than those legs. A trace with the same cross-sectional area would be impractically wide.

[–] elDalvini@discuss.tchncs.de 36 points 3 months ago (1 children)

Alt-text:

Unfortunately, SawStart is one-use-only. Once started, the blade cannot be stopped, and must be replaced with a fresh blade while the running one is carefully disposed of.

[–] elDalvini@discuss.tchncs.de 3 points 3 months ago (4 children)

It doesn't ask you to subtract the numbers, but to calculate the distance (i.e. the absolute value of the subtraction). So depending on which numbers are paired up, the sign of the pair can be different.

[–] elDalvini@discuss.tchncs.de 4 points 5 months ago

I think this might just be a particularly uncooperative tire, but it should work if you wrestle it on there. Maybe post a picture of the whole wheel, there might be something here I'm missing.

[–] elDalvini@discuss.tchncs.de 6 points 5 months ago (1 children)

Alt text:

The zoo takes special care to keep kings separated from opposite-color pieces as part of their conservation program to prevent mating in captivity.

[–] elDalvini@discuss.tchncs.de 15 points 5 months ago (3 children)

Unpopular opinion: The license makes sense and should have been enforced from the start.

The Benchy is a benchmarking tool, not just visually but there are also various features you can measure and check against the dimensions on the website. But that doesn't work if the model you're printing has been modified.

If it looks like a beachy, it should have been printed from the original model, so it's always comparable. Preventing derivatives means you can be sure of that, even if it came on the included SD card with your printer. Otherwise, manufacturers could include a modified model that makes their printers look better than they are.

[–] elDalvini@discuss.tchncs.de 6 points 8 months ago

Every single freewheel does this, and it's not an issue.

The freewheel bearings don't line up exactly with the wheel bearings. This is always the case to some degree, because the interface between freewheel and hub is a non-precision thread.

It might look weird when freewheeling, but once you put use the pedals, freewheel and hub are rotating together, negating this wobble.

 

My 5 year old notebook is starting to show it's age, so I want to finally build a "real" PC. I rarely play games, so this is probably overkill - But I don't want my PC to be what's stopping me. I also expect it to last a while.

I chose all AMD because I'm running linux, and AMD seems to still be the best choice for that.

I found a couple similar posts on which I based this list, so most of the parts are probably fine. I'm unsure about the cooler: How much headroom should I leave? This one is rated just 10W higher than the CPU TDP, so it might be cutting it too close.

PCPartPicker Part List

Type Item Price
CPU AMD Ryzen 7 7800X3D 4.2 GHz 8-Core Processor €385.00
CPU Cooler be quiet! Pure Rock Slim 2 CPU Cooler €23.94
Motherboard MSI B650 GAMING PLUS WIFI ATX AM5 Motherboard €160.24
Memory G.Skill Flare X5 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory €99.89
Storage Crucial P2 500 GB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive Purchased For €0.00
Video Card ASRock Challenger OC Radeon RX 7600 8 GB Video Card €255.00
Case MSI MAG FORGE 110R ATX Mid Tower Case €54.85
Power Supply Gigabyte UD750GM 750 W 80+ Gold Certified Fully Modular ATX Power Supply €75.43
Case Fan be quiet! Pure Wings 3 49.9 CFM 120 mm Fan €9.32
Case Fan be quiet! Pure Wings 3 49.9 CFM 120 mm Fan €9.32
Prices include shipping, taxes, rebates, and discounts
Total €1072.99
Generated by PCPartPicker 2024-09-04 20:37 CEST+0200
 

I just found out that the Getty museum released a lot of artwork into the open domain, including quite a few stereographs. These are meant to be viewed with a stereoscope, but I’ve found they work amazingly well in crossview.

 

I just found out that the Getty museum released a lot of artwork into the open domain, including quite a few stereographs. These are meant to be viewed with a stereoscope, but I've found they work amazingly well in crossview.

 

I built my 3D printer a couple of months ago, but I can't get it to print sharp corners. The corners in the picture should be 90°, without any fillets:

During this test print, I played with multiple parameters: speed, temperature, acceleration, junction deviation, linear advance. All of these were also individually tuned previously. Nothing seems to make a difference.

Could this be a issue with the construction of my printer? I'm beginning to think my hotend isn't rigid enough, but then I would at least expect better results at low speeds.

Edit: the printer is a CoreXY of my own design running Marlin 2.1.2.1. The Slicer is PrusaSlicer with most settings left as default (but increased speeds)

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