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+1! tl;dr Your observations are supported by some experimental evidence at http://fuckcombustion.com/threads/temperature-plotting-with-a-raspberry-pi.20720/ Few combustionfuckers seem to be convinced by my experimental evidence so I'm glad to hear your observations which support what I have...

I was using the large stem DDave mod on my EQ with a relatively tightly packed "hat" shaped screen and noticed that it just wasn't working right - thin vapour and slow, incomplete browning of the material. Yes, normally I use a loose pack and that works better - but this made me think of an air...

https://learn.adafruit.com/thermocouple/overview It doesn't change during inhalation or insertion so non differential in terms of the experimental factors. Wire is 24 gauge and it does not get at all warm during the experiment so cannot be conducting much heat. Seems unlikely to change the...

The temperatures are what they are! The thermocouple was inexpensive and probably not as reliable as I'd like but that's what it's recording in the middle of a stem packed with ABV and the changes are reliable (at least, I can replicate the pattern of change by repeating the setup although the...

Well. It looks like the air is going to be more of a challenge to get heater light blinking recorded reliably because the control panel is so small that I lose access to the buttons by the time the blu-tac has done it's thing. I don't want anything permanent to ruin my nice Air. Whatever holds...

I agree that espresso is definitely worth getting obsessed about :) and the adjustable PID temperature controller allows the Rancilio Sylvia to churn out fantastic shots reliably - compared to the hit and miss of temperature surfing with the default thermocouple which has a huge deadband...

fair enough - the pattern of heater light activity gives some clues but measurement beats guesswork every time in my experience :) Is there a proportional integral derivative (PID) in the Solo rather than a simple set point threshold for the heater circuit to be activated? I've been recording...

Great idea - but I only purchased one and it takes weeks to get parts to Sydney from Adafruit. I'm using hardware SPI conversion and the pi has 2 of those Broadcom hardware DAC ports so it would be technically feasible but I think I have plenty to get on with trying to figure out what's going...

Thyalocoleo carnifex

Me too so I'll put it in the test harness and (eg) run every session on a freshly charged battery. Starting with the solo because I have an old one and a PA which removes the battery as an annoying source of variation in the experiments.

tl;dr People's opinions about the importance of conduction vs convection in various vaporisers tend to be strongly held although I know of almost no empirical data. I've set up my own simple test bed for measuring temperature in my air/solo stems to help figure out what is really going on as...

Screens have multiple uses but need to be kept clean or they clog. Small loads - eg on a domed screen - give shorter session times but major medication confirmed by many of the usual suspects here. Same goes for the Solo. May be better extraction because the screen holds the material up off...

Amen to that. @ataxian normally points that out but he might be asleep at this hour. But surely that does not mean we should stop trying to learn more about the science involved? That's the way users can make informed choices and manufacturers can make better vaporisers.

Maybe. That's exactly why we need to measure what we can in replicate experiments that others can reproduce. That way we can share data supporting models likely to be more "truthy" than any single individual's subjective experience. The solo was efficient for me and my use of it from day 1, but...

You may well vape more than many but getting high is definitively a subjective experience. Scientific, objective measures like "fraction of THC extracted under artificial conditions" cannot address subjective complexities. If I had funding to do something like they did for this paper, I'd...

I'm willing to disagree with that sentiment but I imagine that readers unfamiliar with the style of this kind of scientific publication might very well allow themselves to be mislead - and sure, bad things might follow - but that's hardly the fault of the authors or the paper. This science stuff...

Oh. I must be doing something wrong then :) An old solo (M1A...serial) model with the old pass through PA is my daily driver. IMHO it's effectively a desktop - pretty much indistinguishable from my EQ in terms of extraction power - when plugged in. OTOH: you're right that extraction efficiency...

tl;dr: combusting is just an extremely crude way to heat the herb to liberate THC/CBD vapour which is only acceptable if you are willing to inhale all the additional toxic products of combustion and perhaps some modest loss of efficiency. This is a really interesting issue with remarkably...

Mass spec standards have to be liquids and are usually pure chemicals dissolved in methanol - yuck - don't vaporise methanol - it's really, really bad for your optic nerve!!! They report collecting vapour from both raw materials and also from the "standard" materials *after* blowing off the...

Thanks - I missed that - very interesting....