/diy/ - Do It Yourself

>>2045345
yeah, I wouldn't know how to do a pot off the top of my head in SPICE, but piecewise linear is straightforward enough for voltages

>>2045354
if he does the 7106 won't be of any use to him ofc

>>2045364
like 0.009 hours in MS paint related? sounds right

>>2045365
>and will corrode copper if you leave it on
that's fair, thorough post-cleaning is essential, even for the stronger electronics-grade fluxes. even no-cleans used in hand soldering are better cleaned off a board, since you won't know for sure whether any particular bit of flux on the board was necessarily activated
here's the rub: the pipes we use are quite a bit smaller than plumbers use, and stranded insulated wire wicks so it simply cannot be thoroughly cleaned. if you use activated flux on stranded wire you will come a gutser
if you need that much flux activity, perhaps it's better to tin the parts of the work separately using whatever fuckin' HCl dip, then join them under something milder
>proper stuff
$1 per cc is about right for flux at around an ounce sized order. you don't have to use that much of it. I have a bunch of 2cc tubes of no-clean, each of which gets me through about 400cm^2 of board surface with a lot left over for random breakout boards and wires
>boils off
>need to use a fuckton
I suspect a technique problem
>rosin in alcohol
it's a weak flux, kind of a mess to clean if you should need to, but benign in service and cheap. as expedient electronics fluxes go, this is my fave
>zinc chloride
citric acid can be found in the ethnic foods aisle, but it is cheaper than ZnCl in bulk and makes a decent water-washable flux that doesn't attack metallic Cu or Fe as hard. also great de-ruster for hand tools

>>2045380
it would be easier to guess with board photos. prob just cutting every possible corner
>reference/demo code from the chip mfr
>no FCC testing
>cheapest possible antenna
>shanzhai IP policy
>etc.

>>2045410
>casually moving your minisplit around
Dubai extravagance confirmed