|
PBCrunch posted:it would be so gratifying to alert the cops and see these creeps get arrested lol at the idea that cops will help Your best approach (barring actually locking the doors and not keeping valuables in plain sight) is to get a fake ADT sign and illuminate the area with a floodlight. You’ll be better protected than people who do not have those things thus making your cars a less desirable target.
|
#
?
Aug 10, 2022 02:25
|
|
|
|
| # ? May 29, 2024 15:35 |
|
|
Fill the car with wasps, OP.
|
|
#
?
Aug 10, 2022 08:57
|
|
|
This is my new favorite song: https://www.youtube.com/watch?v=u1vuz8EtC9s
|
|
#
?
Aug 10, 2022 13:52
|
|
|
Foxfire_ posted:System-on-chip => A single IC that contains processor, RAM, program storage, maybe power regulator stuff. You are intended to put the chip on a PCBA you design OK, i looked it up and i hadn't misunderstood quote:A system in package, or SiP, is a way of bundling two or more ICs inside a single package. This is in contrast to a system on chip, or SoC, where the functions on those chips are integrated onto the same die.
|
|
#
?
Aug 10, 2022 14:23
|
|
|
The guy looking for a Linux thing might want to check out: https://onion.io/ God drat! The Omega 2 is $50 now? I remember them selling for like $10 years ago. Nevermind, a new Super Omega 2 is $50. The regular one is $25. PBCrunch fucked around with this message at 16:00 on Aug 10, 2022 |
|
#
?
Aug 10, 2022 15:56
|
|
|
I'm using KiCad 6 to design a complicated board for the first time (last one I did just to try it out was pretty simple) and god I feel like they found every little complaint or annoyance that affected me personally in 5 and fixed it, it's incredible. I have nothing constructive to add I'm just very happy and need to tell someone.
|
|
#
?
Aug 12, 2022 17:45
|
|
|
I totally agree. There are still a couple nice extras they could steal from Altium, but they really got all the useability features to make it a solid tool for complicated stuff
|
|
#
?
Aug 12, 2022 18:04
|
|
|
Awesome. I've really got to upgrade soon.
|
|
#
?
Aug 12, 2022 19:34
|
|
|
Shame Boy posted:I'm using KiCad 6 to design a complicated board for the first time (last one I did just to try it out was pretty simple) and god I feel like they found every little complaint or annoyance that affected me personally in 5 and fixed it, it's incredible. This is really good to know, as Altium is getting worse and worse every update. It continues to run like poo poo even on very powerful computers, and the 365 stuff they've introduced and tricked most companies into using is incredibly half baked. It's very obvious now that nobody at Altium actually uses their software now. I'm just waiting for a personal project to come up where I need a custom circuitboard so I can try KiCAD. If it's good I may try and introduce it at work. (It being free makes that not an impossible sell)
|
|
#
?
Aug 12, 2022 23:18
|
|
|
Splode posted:This is really good to know, as Altium is getting worse and worse every update. It continues to run like poo poo even on very powerful computers, and the 365 stuff they've introduced and tricked most companies into using is incredibly half baked. It's very obvious now that nobody at Altium actually uses their software now. I bet you could find someone who'd sell it to you as part of a package that comes with a support contract. There are entire companies who do nothing but this, because there are so many other companies who can't wrap their heads around using free/libre software. e: Oh, you said "it being free", not "if being free". Can't delete a post, may as well keep it. Happy Friday.
|
|
#
?
Aug 12, 2022 23:25
|
|
|
Has anyone used one of these fancy TMC2208 type stepper drivers? The behavior is really weird when it comes to the powerdown/stationary mode. If I set the hold current to zero (so it can freewheel when not being driven) it loses all torque when driving as well. That would SEEM to imply that it thinks it's going stationary in-between steps. But the stationary flag is never set and the time between step pulses is way, way too close together (500 hz) to trigger the stationary detection based on the math (default is like 400milliseconds between steps = stationary) But there's a separate value for ramping the braking force down, that is supposed to happen AFTER the main stationary delay, and if I increase the current ramp-down time, I can restore drive torque... which certainly seems to imply it's taking effect between each individual step. But I sure as poo poo can't figure out why.
|
|
#
?
Aug 12, 2022 23:31
|
|
|
Does Kicad support exporting anything beyond gerbers, like IPC 2581 or ODB++?
ANIME AKBAR fucked around with this message at 15:27 on Aug 13, 2022 |
|
#
?
Aug 13, 2022 15:18
|
|
|
ANIME AKBAR posted:Does Kicad support exporting anything beyond gerbers, like IPC 2581 or ODB++? Looks like no, not yet. Issue tracker: https://gitlab.com/kicad/code/kicad/-/issues/2019 https://gitlab.com/kicad/code/kicad/-/issues/1954
|
|
#
?
Aug 13, 2022 17:07
|
|
|
 Good start. Good loving start.
|
|
#
?
Aug 14, 2022 17:31
|
|
|
What is that blue stuff
|
|
#
?
Aug 14, 2022 18:01
|
|
|
did you leave a cap on it
|
|
#
?
Aug 14, 2022 18:04
|
|
|
Whoever came up with the idea of surface mount is a complete shithead. I hate this finicky bullshit.PokeJoe posted:did you leave a cap on it Yes 
|
|
#
?
Aug 14, 2022 20:38
|
|
|
Christ, I just tried to solder SMD ICs to some adapters. That was possibly the worst experience I've ever had soldering. This poo poo is meant for machines, not humans. I called it quits right after I got hot flux on my finger trying to desolder the chip (they're all probably hosed tbqh) by trying to corral a whole bunch of solder into one blob and wicking it away. It still hurts.
|
|
#
?
Aug 14, 2022 22:14
|
|
|
You'd think it would be made of silicone so it wouldn't melt. lmao.
|
|
#
?
Aug 14, 2022 22:33
|
|
|
That's basically how my first attempts went, but as I got better at it with practice I absolutely prefer SMD to everything else now  You do need particular tools though, like something that made a big difference for me was getting these really fine-point tweezers: https://www.amazon.com/PHONEFIX-Precision-Motherboard-Fingerprint-Microscope/dp/B078CR1HVF/ Which can hold tiny things just right without trying to flip them or ping them across the room etc. Also it's way easier to use solder paste and a hotplate/heat gun, then touch up everything with a soldering iron afterwards, but that's a somewhat bigger investment so eh.
|
|
#
?
Aug 14, 2022 22:34
|
|
|
Pollyanna posted:Whoever came up with the idea of surface mount is a complete shithead. I hate this finicky bullshit. My dad worked for Philips back when they were first making the push to surface mount (which I think as a company they were very invested in). He designed a PCB using the parts he was required to use, sent it off for layout and assembly, and when it came back, it didn't work at all...unless you pushed down on the chips. The assembly department were apparently still hand-soldering it as they either hadn't figured out or received the equipment to do it the "right" way. My dad still has a mistrust of surface mount due to all that business. I've never had much bother removing surface mount chips, I just use a hot air gun to get it nice and loose (problem is sometimes small nearby components can also fly away, though it's fairly easy to control). Actually soldering the stuff down is a nightmare.
|
|
#
?
Aug 14, 2022 22:37
|
|
|
For desoldering SMD chips you probably want a hot air gun not a soldering iron. There is an easy mode with SMD: low temperature solder paste, a cheap hot plate and some fine tweezers. Plus a tiny stick to apply the paste.
|
|
#
?
Aug 14, 2022 22:40
|
|
|
For small parts you just have to choke up on your soldering iron grip as demonstrated in this stock photo made by someone who clearly knows how electronics work.
|
|
#
?
Aug 14, 2022 22:45
|
|
|
You can get solder paste in syringe tubes so I just put a little dispensing needle on it and apply it like that. I've even got a little thing for hooking the syringe tube up to compressed air and a foot pedal so I can just kinda go *pssht* and apply a precise little blob of it wherever I want.
|
|
#
?
Aug 14, 2022 22:45
|
|
|
I think what upsets me the most is that all the hot iron insanity almost assuredly annihilated some of those ICs via sheer heat exposure.Shame Boy posted:That's basically how my first attempts went, but as I got better at it with practice I absolutely prefer SMD to everything else now Doesn't help when my shaky-rear end hands ruins every mount I try, even with some alligator clamps and holders. (The one I have is actually not heavy enough and it'll tip over real easy which sucks.) I think I'll investigate this solder paste and heat gun proposal... Charles Ford posted:My dad worked for Philips back when they were first making the push to surface mount (which I think as a company they were very invested in). He designed a PCB using the parts he was required to use, sent it off for layout and assembly, and when it came back, it didn't work at all...unless you pushed down on the chips. The assembly department were apparently still hand-soldering it as they either hadn't figured out or received the equipment to do it the "right" way. My dad still has a mistrust of surface mount due to all that business. good, gently caress smd quote:I've never had much bother removing surface mount chips, I just use a hot air gun to get it nice and loose (problem is sometimes small nearby components can also fly away, though it's fairly easy to control). Actually soldering the stuff down is a nightmare. Can confirm. Spatial posted:For desoldering SMD chips you probably want a hot air gun not a soldering iron. guess ill buy more poo poo!!!! PDP-1 posted:For small parts you just have to choke up on your soldering iron grip as demonstrated in this stock photo made by someone who clearly knows how electronics work. I almost did this once. Once. Shame Boy posted:You can get solder paste in syringe tubes so I just put a little dispensing needle on it and apply it like that. I've even got a little thing for hooking the syringe tube up to compressed air and a foot pedal so I can just kinda go *pssht* and apply a precise little blob of it wherever I want. The biggest problem I have is that the component is so small that I will inevitably knock it out of alignment and trying to fix it will always end up like this:  No, I still can't get it off. I can't even tell if there's solder left or not.
|
|
#
?
Aug 14, 2022 22:58
|
|
|
For something that large I've had good luck rubber-banding it into place before tacking down a couple of legs
|
|
#
?
Aug 14, 2022 23:08
|
|
|
Tack opposite corners first That's very doable with an iron - intentionally use way to much, and then solder wick it off
|
|
#
?
Aug 14, 2022 23:31
|
|
|
Pollyanna posted:The biggest problem I have is that the component is so small that I will inevitably knock it out of alignment and trying to fix it will always end up like this: Not sure if that's in reply to my solder paste stuff or just a separate thought, but if its the former: you put the solder paste down first, and then use fine tweezers to plop the part down on top, then nudge it a lil' into place, then heat everything up to melt it. The nice thing about the solder paste method is once it melts the surface tension just kinda like, tugs everything into the right place as long as it's sorta close to where it needs to be.
|
|
#
?
Aug 14, 2022 23:51
|
|
|
Pollyanna posted:I almost did this once. Once. I do it maybe once every year or so My fingers are now durable enough that I can very briefly touch the soldering iron tip without burning them though so that's fun.
|
|
#
?
Aug 14, 2022 23:52
|
|
|
Every time I look at this photo I see something new. Better make sure your 555 is torqued to 225 ft/lbs before you hammer it home. And twist your wires together firmly with your linesman's. Also, there is an iron plugged into that 400° base. Is it the one being held? 
|
|
#
?
Aug 15, 2022 00:07
|
|
|
A soldering iron scope probe is awesome for testing your circuit live while you solder it. Though it's obviously not hooked up to either the scope or the iron controller. WTF is the scope even reading? It has a probe connected to the reference thingy but not any of the inputs? 
|
|
#
?
Aug 15, 2022 00:14
|
|
|
I've managed to pry off all the ICs. Intact and healthy, who knows. Now I gotta design some circuits for them. This is still in the OP but oh my lord is it jank, any chance there's a nicer piece of software out there now? My own stuff isn't gonna be anything more complex than what I can fit on a piece of stripboard. EDIT: Fritzing works! everyone posted:tipz Once I calm down and get less offended by things Not Being Idiot Proof, I'll try it out again! Pollyanna fucked around with this message at 01:26 on Aug 15, 2022 |
|
#
?
Aug 15, 2022 00:27
|
|
|
One Legged Ninja posted:Every time I look at this photo I see something new. Better make sure your 555 is torqued to 225 ft/lbs before you hammer it home. And twist your wires together firmly with your linesman's. Also, there is an iron plugged into that 400° base. Is it the one being held? I assure you that this is the proper setup for soldering your PDIP to a plastic breadboard by placing the tip of the iron on top of the package. Granted, the PDIP may not be connected with the right torque in this photo, that is likely what's preventing the soldering iron from wirelessly transmitting a well compensated square wave to the scope that has no other visible inputs.
|
|
#
?
Aug 15, 2022 05:23
|
|
|
It is absolutely possible to solder many surface mount parts by hand, until you get to stuff where the pads are under the part; then you have to use hot air or an oven. However, while you're learning how to solder surface mount parts I highly recommend sticking to components with just two pads, like resistors and capacitors. As you practice you can work your way down from relatively large parts like 1812 all the way down to 0402. There's also 0201 and 01005 but that is getting pretty gnarly. I believe there are practice boards you can buy for this purpose. Once you've got the hang of two leads, something like that tssop package won't seem quite so daunting. But there's no shortcuts, it just takes practice.
|
|
#
?
Aug 15, 2022 06:47
|
|
|
I didn't even catch that it was a TSSOP, I'd probably stick to SOIC until you get the hang of it. You can get most things in SOIC and it's got twice the pin pitch so it's a lot easier to wrangle.
|
|
#
?
Aug 15, 2022 07:31
|
|
|
Drown the fucker in flux. It's the only way to be sure. Positioning & tacking is definitely the hardest part, once it's lined up if you use lots of flux it's really not hard to do the rest of the legs even with 0.5 pitch parts. Again, assuming it's lined up. For parts that don't have a thermal pad underneath, presumably you could use a tiny spot of some kind of putty to keep it from flying around at the slightest touch, though it would have to hold up to the temperatures of soldering without turning into goo. Also I really recommend a microscope, I got one of those HAYEAR ones w/ a barlow lens and man is it nice to not have to hunch over it with magnifying goggles on.
|
|
#
?
Aug 15, 2022 13:26
|
|
|
Pollyanna posted:Now I gotta design some circuits for them. This is still in the OP but oh my lord is it jank, any chance there's a nicer piece of software out there now? My own stuff isn't gonna be anything more complex than what I can fit on a piece of stripboard. Bit of a learning curve but Kicad 6 is good and free and possibly way overkill for what you want to do right now
|
|
#
?
Aug 15, 2022 13:36
|
|
|
This hurts just to look at. Also, what's with the torque wrench?
|
|
#
?
Aug 15, 2022 15:16
|
|
|
cruft posted:This hurts just to look at. One Legged Ninja posted:Better make sure your 555 is torqued to 225 ft/lbs before you hammer it home. It's just common sense
|
|
#
?
Aug 15, 2022 15:18
|
|
|
|
| # ? May 29, 2024 15:35 |
|
|
Shame Boy posted:It's just common sense Makes me wonder if somebody's made a hidden picture book for engineers. IN THIS PICTURE: a big ol' mess
|
|
#
?
Aug 15, 2022 15:23
|
|