Re: Electrolytic SMD removal tools
Looks like it could stand some adjusting with a hammer, punch and file. Sounds like iron plating isn't too bad to do if you really wanted to be obsessive. Are the tips replacable?
These diy solder tips are pretty smart. I had just learned about doing these on the big weller soldering guns, I have a few of these screw down irons that I haven't used in years, could come in handy....
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Last edited by clearchris; 10-14-2023, 11:43 AM.
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Re: Old Weller 100/140 Watt Soldering Gun
I can't say if that bulb was stock, these irons have truly unknown provenance, they could have come out of a trash can.
I took a closer look at my other one, and wow. No bulb, looks like the top had been broken off at some point, and somone spilled black epoxy all over the top to keep it together. If I disassemble one to make a permanent handleless bench top iron, it's going to be that one.
Before I do anything rash, has anyone ever needed to dual wield two soldering guns? 140w seems like it...
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Re: Old Weller 100/140 Watt Soldering Gun
Printed a stand with a trigger hold down bar. The stand seems firm, Ithink the trigger hold down bar could use some tuning, both for functionality and also for printability.
(not my design, btw)
[url]https://www.thingiverse.com/thing:3812661[/url]
[attach]313617[/attach]Re: Old Weller 100/140 Watt Solderin.../> <br /> (not...Last edited by clearchris; 10-07-2023, 11:08 AM.
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Re: Old Weller 100/140 Watt Soldering Gun
All the cool kids on youtube seem to use 8-14ga solid copper wire as a tip. Would probably be super easy to make a tip bending jig out of some nails and a piece of wood....
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Re: Old Weller 100/140 Watt Soldering Gun
Wow, I thought he had one video on how he used a solder gun for smt, but it's just what he uses. Then I see him freehand dremel a solid pcb into a full circuit. I feel like I'm in an F1 race and I just got lapped by a guy on a unicycle.
Truly you can do a lot with basic tools if you have real skill....
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Old Weller 100/140 Watt Soldering Gun
Someone gave me two of these 100/140w weller soldering guns. Yes, I know it runs current right through the tip, but might be nice to really get some heat into some big wires that need to be soldered.
So, worth a place on the bench, or chuck it?
[ATTACH]313320[/ATTACH]...
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Re: Chinese hot air and soldering stations
If you are going cheap, get the cheaper hot air, spend more on an iron. I don't see a lot of savings from getting the all-in-one units, I'd prefer separate machines.
If you are just starting out, the pinecil is pretty good if you can find an old 20v laptop charger that you can cut apart. For hot air stations, a lot of people use the cheap ones, but I think skill matters a lot more than the hot air tool (at least in my unskilled hands).
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Auto Lead Acid Battery Charger
Hi!
I have a super basic schumacher 120v to 6/12v 2/5a auto battery charger. It's a metal box with a meter, switch that goes to the taps on the transformer, a rectifier attached to a sink and a thermal cutout switch. No electronics PCBs, or other circuitry.
When I attach the clamps to the battery, it charges properly for maybe 30 seconds, then I hear what I believe is the thermal fuse tripping, and it goes off. In a minute or so, it turns back on and the cycle repeats. This happens on 2a mode and 5a mode.
With no battery attached, I measure 14v DC at...
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Re: Shorty short finder branched and released as ShortyPen!
My convection toaster oven does have a fan in it, the temperature is very stable, can easily hold 1c, and I bet part of that is electrical noise on my ancient max type-k reader chip. I wouldn't bother if the toaster oven doesn't have a fan.
From the way I understand air fryers, they move a lot of air out, so I don't know that they could reach the target temperatures quickly enough. However, I haven't really looked into it. If they are all quartz heaters or other heater with fast response it might be possible....
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Re: Shorty short finder branched and released as ShortyPen!
If you purchase the stm32 chips from a reputable place, it will come with a moisture indicating paper, and it will tell you if you need to pre-heat (if you follow their processes exactly). I'd probably do it anyway.
Yeah, the oven was state of the art a few years ago, but since then, I have heard from others who have made their own KlipperOvens. Yeah, detractors will say that it's a lot of hardware for an oven, you could get by with only an MCU, but IMHO, it's worth it for the feature set,...
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Re: Shorty short finder branched and released as ShortyPen!
It's not the accuracy that was the issue, I think the issue is overheating / destroying the chip. The chips absorb moisture, and that moisture tends to expand and destroy the chip during heating.
I haven't tried reflowing an stm32 in the reflow oven, but I do have a few chips in my dessicant pail. And yes, love my reflow oven, but I rarely do reflow in it.
I have a thread on here about my oven, I also put a lot up on hackaday.
[url]https://hackaday.io/project/171619-not-just-a-reflow-oven[/url]...Last edited by clearchris; 01-27-2023, 12:02 PM.
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Re: Shorty short finder branched and released as ShortyPen!
These boards are super small, wouldn't they fall under small-packet postage? It's not quick, but it's pretty cheap. But yeah, cheaper in quantity for sure.
itstallion: Have you had success soldering stm32 chips? If you have, do you have any tricks? I have not been successful.
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Re: Shorty short finder branched and released as ShortyPen!
The stm32 mcu is a great upgrade. As much as I have liked the arduinos, their time has long since passed. For a similar price to an arduino clone, you can get an stm32, an esp32 with wifi, or an rp2040, all of which are massive upgrades over the arduino.
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Shorty short finder branched and released as ShortyPen!
News from eevblog:
[url]https://gitlab.com/jdobry/shortypen/[/url]
[url]https://www.eevblog.com/forum/testgear/finding-short-on-motherboards-with-a-shorty-(with-display)/msg4618285/#msg4618285[/url]
[ATTACH]285858[/ATTACH]https://News from eevblog:<br /> <b...85858[/ATTACH]News from eevblog:
[url]https://gitlab.com/jdobry/shortypen/[/url]...
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Re: how do you resolve problems with ebay (and other shop) scammers!?
I'll generally not buy something as "not working" but I don't have an issue with "untested." I also won't buy something on ebay that's a popular item that generally requires repairs, i.e. game consoles, fancy video cards, etc. Most of my ebay purchases tend to be obscure items (wierd commercial equipment), and cheap enough that if I have to make major repairs, I'm ok with it.
If there's a question, I'll look through the buyer's other for sale items and see if there are any signs...
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Re: Mix & Match Hot Tweezers with Station
[url]https://m.youtube.com/watch?v=yW9RDMQPU5U[/url]
Your station can only control one iron, tweezers have two. It doesn't look too hard to build a dedicated tweezer unit, but I don't know what goes into proper ESD grounding, etc.Re: Mix & Match Hot Tweezers with St...ESD grounding,
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Re: Altec PC410 (BGA Rework) to communicate with PC
Does your ch340 get recognized by the OS? Going from memory here, IIRC, you have to download a driver for the ch340, there aren't "certified" drivers for them. Has been so long since I have been using this chips for a very long time, I don't quite remember what I had to do to get them owrking.
Glad you got it working though!...
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Re: Altec PC410 (BGA Rework) to communicate with PC
I think I can help elucidate the issue. The issue is you have fake proliant and FTDI chips. Prolific and FTDI decided because there are so many fakes out there, that they would bar the fake chips functioning with their drivers. The problem is that, as a buyer, there's really no easy way to authenticate that the chips are real. So I just don't buy anything labeled FTDI or Prolific. I have bought an arduino, from a US seller, that was labelled, 100% real, not fake, guess what, it was a fake.
These cables...Last edited by clearchris; 07-17-2022, 09:56 AM.
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Re: Old Kenmore Clothes Dryer
You can say that again! Thanks everyone, I'll check the resistor, it's quite possible it's fried or out of spec.
And yeah, it's probably from the 70-80s, possibly the late 60s. But it just works, the dryer is a monster that just does it's job. A few years back I replaced the belt, the felt seal, the rollers, and the wear parts are good to go for another 40 years.
Newer models, you hear about the drum cracking and all other kind of silly stuff because the manufacturers wanted to save a few bucks. Not this...
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Old Kenmore Clothes Dryer
So, this is a very, very old dryer, and I love it. I can take it apart almost with my eyes closed, it's usually very easy to repair. Anyway, the timer module refuses to advance. I replaced the timer module with a used one (new unavailable), it worked for a few weeks, and now the new (used) timer module isn't advancing again.
I opened up the first bad timer module, and the RSI contact was pretty toasty, there was a nearby burn mark like it suffered a big arc at one point. While I had everything apart, I tested the timer motor and it appeared to work. I cleaned the RSI contact and...
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