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update time ... my cube was starting to act wonky (technical term - meaning some type of operator assistance (i.e. whack on side with knuckle) was needed for functional operation). so for the first time in several years i took it apart and found the copper connector holding one end of the...

i added some floor exercises to my strength training segment specifically to work on my abs. 6-pack by Christmas!! bookmarked some nice ab workouts on X and follow them. one i tried was kneel down on one knee, other foot flat on the floor, then reach/stretch up above the knee that's up then...

nichrome can come as wire (round) or ribbon (flat). i use nichrome80 ribbon to wrap around my oven tube. much better than nichrome60 in that it doesn't corrode. i use about 13" with resistance about 0.3 ohm per foot. i have to look it up but i think it is 1/8" wide by 0.01" thick (28 ga)...

i'm still thinking about price. it will include the vape, two 36" power cables, two 6" power cables, two battery packs, a 3amp charger - recharge a dead power pack in 60 minutes for 90 minute runtime. 6 bud vials, 6 draw tubes (it takes some experience to learn to not drop the glassware), 6...

agree ... i am more interested in consistency and stability than accuracy. the reading of 420°F is just a guide to let me know what to expect from the session.

ok, call me a fool but i found 1°F stability to be doable. i use a BBQ thermometer as a "fair witness" for the temp readout, measuring the hottest part of the heater. the middle of the bud vial hits this temperature in the first 5 seconds of the draw. the mighty has +/- 5°F temperature swing...

the pid control turned out to be very straight forward - once i found the MAX6675. i had tried a PWM controller i got on eBay but it used a potentiometer to control the setpoint. not only did the 3A current burn through the desired setting, but i couldn't provide enough mass to hold heat...

as Radwin shows with that diagram, the air flow is contaminate free - definitely not in the same environment as the electronics and not passing across the heating ribbon. the vial is inside the oven tube and isolated from the vape interior.

my DIY vape, The Herbal Cube (project name was Bud Toaster) is an only glass air path vaporizer. Air path is completely isolated. It is battery powered but too cumbersome to be considered "portable" - i say "mobile" - all gear fits in a leather case which is easy to take out to the balcony for...

thank-you for the pixs but i can't tell anything from them. i don't know what "D" means, but the wires are very heavy gauge for powering an LED. i have my LEDs soldered to my PCB. i hope to get back to working on my vape in the next week or 3. i have to relearn wtf i did after so much time...

i'm trying to settle into two days of exercise followed by one recovery day. so, one day doing lower body and leg stretches floor exercises (30 minutes) followed by my normal 30 minutes of aerobics on the Nordic Track (which, sadly, is only available on eBay now). next day for upper body on...

could the temperature sensor be out of position? do you have any internal photos or diagrams?

i found this is also true for my heating element - 1/8" wide nichrome80 ribbon. i finally settled on a physical connection - sheet metal screw holds the end of the ribbon against a flat copper post. thermal expansion / contraction has not loosened it over several years. i opted for a k-type...

i have my vape set to timeoff at 7.5 minutes from startup. roughly 1.5 minutes to get to temp and heat saturate, then 6 minutes of inhales. i like long-ish inhales. seems to work well. i need to do the math to figure out how much heat transfer from heater to incoming air vs air flow rate...

@Polarbearboy - 1968 is when i started tokin' also. thanksgiving break, sophomore year in college. i'm still a hippie (in my own mind) ... sit around naked most of the time, at least. spend the first half of the 1970s in california - it blew my mind.

anybody measure their heart rate while doing aerobics? i hit 167 toward the end of my 30 minute session today on the NordicTrack skier. theoretical max for a 53 year old ... i'm 76. there is a theory of longevity that there are only so many heart beats and one can use them all up too soon. i...

what is the MOSFET gate voltage from the pwm? i can't tell if it is 3.3v or 4.5v from the description. should be eq or above 4.5v (for the one i use) or the source to drain resistance can skyrocket and burn it out. mine used to get wicked hot before i learned this.

trust ... but verify or have faith ... but get references

my life long motto (for 54 years): know your chemist.

and here it is 4 and a half years later ... damn pandemic ... i got distracted