NishanthMenon changed the topic of #openocd to: this is the place to discuss all things OpenOCD | Logs: https://libera.irclog.whitequark.org/openocd/
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<pi0> well i was not able to solder over tha pads once i desoldered it
<pi0> fudge
<pi0> i dont know if i need better flux
<pi0> tiny tip needles
<pi0> PaulFertser: well i think i will have to invest in that nice soldering iron you mentioned
<pi0> perhaps some decent flux
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<pi0> PaulFertser: are you awake
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<pi0> well this is terrible, i am on my third board
<pi0> i burned the pad right off even though i dropped the heat to 350
<pi0> i might solder at 100 at this point
<pi0> if possible
<pi0> perhaps i need a better soldering station something to hold my mcu's perhaps helping hands
<pi0> i gotta learn this stuff before i get a real job :D
<pi0> or a better one
<pi0> i mean
<pi0> maybe i will use a strategy like this, https://www.youtube.com/shorts/-0bUjPpXF7U
<pi0> with an airgun and flux
<PaulFertser> pi0: hot air is more complex
<PaulFertser> pi0: it's not possible to damage the pad (especially right off) using that temperature. There's something really wrong.
<PaulFertser> pi0: can you make a photo of the damaged pad
<PaulFertser> flux is needed but anything minimally reasonable should do, especially with a fresh board. It doesn't affect "burning pads", it's needed to get surfaces clean for better adhesion and helps the solder flow.
<PaulFertser> pi0: nothing fancy is needed, really, look, I soldered that wire to the side of 0402 capacitor https://paulfertser.info/files/useless_buzzfix/03-post_rework.jpg using only https://paulfertser.info/files/useless_buzzfix/04-poor_man_tools.jpg
<PaulFertser> (of course having the tip /that/ far from the handle makes it uncomfortable but still doable; no temperature control increases the risk too)
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<pi0> my tools are basically the same, i have this generic 15 dollar soldering iron set
<pi0> PaulFertser: I am putting the images together, with the tools, solder, flux, boards, one sec
<PaulFertser> Nah, that soldering iron on my picture is huge and iirc about 60 W so too hot for electronics for sure.
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<pi0> PaulFertser: alright! here is the stuff
<pi0> I bought this flux recently, the one i bought before was for plumbing copper pipes
<pi0> that was a mistake
<pi0> perhaps setting the temperature down to 100? check my avail temps on that soldering iron
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<pi0> PaulFertser: does it appear to be fixable?
<PaulFertser> pi0: looking...
<PaulFertser> pi0: I wouldn't trust temperature on that regulator, I'd go by trying to go the lowest then slowly raise till it melts solder.
<pi0> i will order that s60p you said
<pi0> i gotta get better at this
<PaulFertser> pi0: are you sure this flux is not acidic? I can not find any specific information but other fluxes which have 808 in the name are requiring serious cleaning it seems.
<PaulFertser> Here https://ibb.co/twszqjng DIO looks ripped, as if it was pulled up while heated.
<pi0> yep i think i went in too hot
<PaulFertser> Here https://i.ibb.co/p6b39XGy/Screenshot-from-2025-03-08-13-47-25.png it doesn't look bad, just like tinned pads I guess?
<pi0> i think that board is toast unless there is another way i can approach the swd and clk
<pi0> what would i use for cleaning for this type of flux
<pi0> i am not sure how i would even clean this
<PaulFertser> IPA should work
<pi0> what is ipa
<PaulFertser> But one shouldn't be using acidic flux unless really necessary.
<PaulFertser> Isopropyl alcohol
<PaulFertser> Ethanol would work too
<pi0> 90 percent good
<pi0> or should i use lower
<pi0> so the process is clean the board first then apply flux and solder then clean off again
<pi0> and can i use a qtip to clean it
<PaulFertser> The more alcohol the better.
<PaulFertser> 95 % is ok
<pi0> ah perfect, but first clean the board before adding flux
<PaulFertser> A new board doesn't need cleaning usually.
<pi0> ah gtocha
<pi0> this is afterwards
<pi0> i got have 10 new tips for this cheap solder
<pi0> so i will do what you said, slowly move it up
<pi0> the solder doesnt really just stick to the tip of the soldering iron
<pi0> it seems to just clog up into a ball
<PaulFertser> It's often ok-ish, depending on the tip material, some ceramic tips are not taking any solder at all. But probably it's just dirty.
<pi0> i might get this
<pi0> oh wait for get it
<pi0> it has lead
<pi0> whoops i meant lead free
<pi0> maybe i can sandpaper the tip to remove dirt
<pi0> PaulFertser: also do i add flux to the pad with a syringe first
<pi0> then solder the pad
<PaulFertser> Lead free is harder to use, it needs more temperature and flows worse.
<PaulFertser> Flux goes first, yes.
<pi0> all my stuf is lead free
<pi0> shoot!
<pi0> rosin lead i think
<pi0> rosin solder i mean
<PaulFertser> This is going too offtopic for #openocd I'm afraid.
<pi0> whoops sorry, is there an openocd-office
<pi0> offtopic
<PaulFertser> Nope, sorry.
<pi0> can i pm
<PaulFertser> Yeah feel free to but I'll probably be off to sleep really soon.
<pi0> ok thank you