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the controllers have cool pid tuning algorithms, would be neat to impliment that
they seem to set intermediate set points, then guess pid values based on response

Posted by renesis at 09:56 | permalink | 0 comments


yeah i noticed that, $107 for a cable and a converter ic in a box
jero32: so if you make a pid controller, you prob save around $100, using spendy parts
stm32 disco, some big opto triac SSR, couple thermocouple amps, some nice connectors
and right, if you impliment an actual pid loop, tuning should be really simple
pwm with 1 second period or something

Posted by renesis at 09:50 | permalink | 0 comments


oh yeah his ramps
oh, omega stuff is not cheap
not crazy either, tho
also when i read bad reviews, a lot of them sounded like people burning out their heaters
ive had a cart heater die with an internal short through a mypin relay, worked after, shrug
$200

Posted by renesis at 09:43 | permalink | 0 comments


ya
jero32: theyre $20 from amazon and they work
because heat = slow
ive used the ones with built in 3A relays, havent had issues
you set the temp using goofy as fuck non intuitive interface from the 80s
sec i get manual
https://blog.uvm.edu/cwcallah/files/2016/04/Mypin-TA4-manual1.pdf
for like $80 you can get super tiny ones from automation direct
yeah man
well, the automation diect ones have a serial interface i think
shrug
dont think so
maybe through a serial interface
unless he has like, advanced ones
https://www.amazon.com/Universal-Programmable-Thermostat-Temperature-Controller/dp/B00X73GX6C/

Posted by renesis at 09:37 | permalink | 0 comments


you save power with it
and with or without, heat is slow as fuck
so a tuned pid will deal with it
but elements working harder and heat dropping quicker seems like more control
my toaster oven getting kind of nasty
might retire it to reflow duty
large reflow ovens, insulation would help keep temps more even
but toaster oven got a fan, yo
get one with a fan
yeah because dusting
*ducting
you can prob get a $30 one with a fan

Posted by renesis at 09:29 | permalink | 0 comments


toaster oven?
more insulation makes it slower
heat is already reeeeeally slow
yeah but it makes it react slower to inputs
with insulation youre going to get more heat from same heaters
but im thinking for an actual profile, the heating elements are already overkill
i know weve purchased them for labs
was a bit silly

Posted by renesis at 09:24 | permalink | 0 comments


my guess is theyre set to run between like 500 and 600F, max
you could test it, normal op
basically see the duty cycle at diff temps
good insulation might be bad unless you had a vent system
because you have to cool down
jero32: everyones doin it
jero32: thats not very automated
?
i dunno man shit insulation seems like a benefit to me
not like youre trying to save power
and it means its going to cool faster

Posted by renesis at 09:19 | permalink | 0 comments


depends on devices, too
like, heavier smd magnetics just wont finish soldering, normal profiles
either gotta go way longer or way hotter
always problems, big smd transformers and heat sensitive smd, same board
jero32: 450F
for baking, yeah typically
and yeah theyll get hotter but who knows what the insulation and plastic parts will deal with
my guess is toaster ovens arent much overdesigned
would be cheapest to run it like that
war up prob isnt horrible because so little
but you still need to compensate for cold rooms
like, if you designed for 450F at max at room temp, shit is going to offset by actual temp diff from nominal
sure but theyre still little

Posted by renesis at 09:14 | permalink | 0 comments


rab: cannot unsee magneto helmet
the changed the icon on the android app too

Posted by renesis at 05:06 | permalink | 0 comments


rab: binned to meet panasonic specs, if you believe their datasheets, which are basically panasonic datasheets
a lot cheaper tho

Posted by renesis at 04:22 | permalink | 0 comments


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