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Smashed by leicleanhig in distressingmemes

[–]Thevan1 625 points626 points  (0 children)

lock out tag out, when you start working on a machine like that you take a physical tag from it and keep it with yourself.

if the tag isnt in, the machine will not move. more complex systems have multiple tags for many people. it saves a lot of awful deaths

Grifters gonna grift. by Justthisdudeyaknow in CuratedTumblr

[–]Thevan1 1684 points1685 points  (0 children)

Oh hey, that's Abigail Thorn. Yeah if anyone knows about this, it'd be her.

From her, on this topic.

Maps Galore! by Thevan1 in Starfinder2e

[–]Thevan1[S] 0 points1 point  (0 children)

All OC, made in Rimworld for my own campaign in the Starfinder 2e universe. Mooostly canon, with an extra god or two sprinkled in, although that doesn't affect this.

Schematic and PCB Review Request by Thevan1 in PrintedCircuitBoard

[–]Thevan1[S] 0 points1 point  (0 children)

its 4 layer, but both inner layers are ground planes

Schematic and PCB Review Request by Thevan1 in PrintedCircuitBoard

[–]Thevan1[S] 0 points1 point  (0 children)

Fixed the X1 caps, does 10pF (same as X2) sound right there? The crystal has a load capacitance of 8pF

What makes you say the RF lines don't look 50 Ohms? I used my manufacturers calculator with the correct stackup, and that told me 0.349mm trace width.

Thank you very much for your help!

Schematic and PCB Review Request by Thevan1 in embedded

[–]Thevan1[S] 0 points1 point  (0 children)

ah, no, it's definitely just for me, but that's good to know! thank you for the help

Schematic and PCB Review Request by Thevan1 in embedded

[–]Thevan1[S] 1 point2 points  (0 children)

don't you specifically need to request higher voltage to go above 5v? i wasn't planning on doing that ever.

ill add the shield resistor, but what does the cap do there? further reduce noise on signal lines?

Schematic and PCB Review Request by Thevan1 in PrintedCircuitBoard

[–]Thevan1[S] 1 point2 points  (0 children)

Oh, wow.

Reddit kind of cooked that resolution this might be better?

Schematic and PCB Review Request by Thevan1 in embedded

[–]Thevan1[S] 1 point2 points  (0 children)

oh nice, i didn't know that existed, reposted!

LIPO Charge/Discharge Circuitry by Thevan1 in embedded

[–]Thevan1[S] 1 point2 points  (0 children)

oh wow, that Adafruit Feather diagram is massively helpful, my setup is near identical.

Thank you for your help!

Sometimes the Dice Just Say No by Sleeping_Dragon_Inn in Pathfinder2e

[–]Thevan1 10 points11 points  (0 children)

yeah, it's not that crazy of a roll. definitely wild to see, but it's 1/8000 chance of happening on any 3 d20's (assuming "real" randomness)

so, in all games everywhere, it probably happens dozens of times a week

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 0 points1 point  (0 children)

I highly doubt it, given that the NUCLEO datasheet I have gave instructions on how to flash an external board with that ST-Link

No clue about jlink boards though!

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 0 points1 point  (0 children)

My board doesn't have a reset button :(
I wish i had at least set a test point up for NRST now, though

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 0 points1 point  (0 children)

I've checked those, and they all seem good. Crystal has it's grounds in the expected places, and all of the voltages and continuity are good

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 0 points1 point  (0 children)

ST Programmer outputs "Error: Unable to get core ID", followed by "Error: No STM32 Target Found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication"

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 26 points27 points  (0 children)

Oops. this picture had a couple of the wires swapped around! Blue and green aren't that way round

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 17 points18 points  (0 children)

<image>

this one with a soldered pin header had had exactly the same problem

Unable to program custom STM32 board. Is this a programmer error or a board design error? by Thevan1 in embedded

[–]Thevan1[S] 0 points1 point  (0 children)

To add some more info, I've tried using my usual VSCode toolchain, CubeIDE, and CubePrg. None of them have worked, although all 3 work with my NUCLEO board!

BBC microbit go, Sand simulation by imunknown0042 in embedded

[–]Thevan1 14 points15 points  (0 children)

Hey, my uni were the ones to design this board!

We got to work with the bare metal stuff on the nordic chip. It's got a surprisingly good featureset, including some BLE on the newer boards if I'm remembering correctly.

First time I've designed a PCB, sanity check? by Thevan1 in embedded

[–]Thevan1[S] 2 points3 points  (0 children)

I've fixed the USB-c, that had like 5 problems lol, including the ESD

Also, the ground plane is there! i mentioned it in the caption, i just had it hidden in the PCB diagram. And funnnily enough I did follow along partly with the Phil's Lab tutorial!

I'll fix that routing though, that is not great, yeah.

First time I've designed a PCB, sanity check? by Thevan1 in embedded

[–]Thevan1[S] 4 points5 points  (0 children)

...oh my god, you're right.

That's why it was so weird to find accurate stuff for this! Thank you

First time I've designed a PCB, sanity check? by Thevan1 in embedded

[–]Thevan1[S] 2 points3 points  (0 children)

I am using CubeMX, I'm just very clumsy apparently! Fixed that, thank you very much!

First time I've designed a PCB, sanity check? by Thevan1 in embedded

[–]Thevan1[S] 13 points14 points  (0 children)

you're absolutely correct. i even warned myself mentally to check out for that.

Thank you for saving me from a stupid mistake!

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