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Yeah the thermocouple and digitizer would make up a large chunk of the electronic component cost, and some build time to make the thermocouple but when you are hand building vapes, component costs are nothing ;) still, if you were to mass produce the boards and outsource manufacturing, it's...

Hows it going Hippy? Thought of something the other day, did you ever experiment with a thermistor instead of a thermocouple? Would be far cheaper as its just using a single adc pin rather than a MAX6675. Glass bead thermistors are used in 3d printers that PID regulate anywhere from 50 to 300°C...

Ok. After extensive testing.. I think its pretty awesome. :spliff: Once you get the draw method that is. ie breath out, draw slow (the hard bit), then inhale a lung full of air on top of that. pretty obvious but a lot of people don't realise. The airflow is pretty restricted by the holes in the...

Nope, only when first assembled, I think it was the oils from my fingers during assembly burning off. I have the tube covered in kapton tape to hold the wire to the tube, won't have to do that next time as I bought some 19AWG nichrome The vape seems to be doing ok mid session

Thanks, I'm glad you like it. Testing begins tomorrow :D I did the LED's using SMD parts freeformed and glued to the wood. the holes are filled with epoxy to act as light guides. I think I'll include the led bar in my next pcb iteration.

@Hippy re: turn on, I reckon simply plugging the deans plug in is enough of a hurdle for the impared user. but each to their own. re: voltage cutoff, yeah you are taking advantage of the A123's great tolerance for discharging to a low voltage. Because I am using lithium-polymer cells, I have to...

@CentiZen heh, I had considered that LCD. It is still too large for my liking. Maybe something out of an old mobile. The other issue is the difficulty in building a case around it. I'm using an Attiny84 MCU for my version, I'm only using 5 GPIO at the moment, 3 for the thermocouple chip, 1 for...

:( well I guess I'll just need to break more tubes. I couldn't find much on youtube, only that lathe video. do you score the tube on the first run? or go over it a couple of times to make a deeper (but more chipped) score? maybe I need a sharper glass cutter (mine is the same style as what you...

Hmm you may be waiting a while. Maybe move your sales operation to canada or something ;) Another update from me, I don't think the last one was deserving of the "Bud Toasters builders club" but this one is definitely getting there. The glassware is up to scratch with the real thing. only...

Thanks for the direction hippy. Unfortunately I'm on the other side of the world so those $12 bits become $60 after shipping :( However, I did find a place on ebay selling 0.7mm bits for a similar price. I also found this: DIY Ultrasonic drilling, seems pretty neat.. basically zero wear on the...

Cool. I have a nice 400V 3,300uF cap which makes some mighty sparks. I'm not sure if it is suitable for welding though. Voltage isn't so important as current, although I don't doubt this capacitors current delivery capabilities (it has bolts and nuts for terminals haha.) Alternatively I have a...

@Pipes Did you get that capacitive discharge welder working? I was looking at this the other day, tempted to try it to weld nichrome wire to copper wire for my "bud toaster" clone. That MFB clone of yours looks pretty good, any success? without a good connection It would be pretty unreliable...

G'day HD I have repackaged my clone in some indonesian rainforest. Thought I'd share. This is still temporary, there is a lot of wasted space inside, the oven chamber is much longer than yours too for no particular reason. And the electronics is mounted on the bottom, with rubber...

Really.. I was just measuring the temperature inside the vial, it was actually 20-30C higher than the set point, which does seem physically impossible.. I say this because I assumed the controller thermocouple is representative of an average temperature over the heating chamber, but in fact it...

Could have a bag inside a rigid container, bag starts off deflated, draw a vacuum inside the container which inflates the bag to fill the container. That way you don't have to worry about having a pump in the vapour/air path. I saw this idea somewhere, not sure if it was ever implemented. I have...

Well I decided to take you up on that, and obtain some actual data. Used the software serial debug built into the attiny arduino core and GNUplot to do this: It seems that the thermal response is pretty damn slow, either that or the PID is working really well to keep it stable! can't make out...

Hmm I have a few spare pins, might wire up a serial LCD and display the thermocouple temp instead I also have this tiny bluetooth module which acts as a serial bridge to another device, like a phone. I was thinking of making an android app to control it, now that is a feature no other vape has...

Hippy, I am really liking that shape, what sort of wood is that? Regarding glassware, I have improved it somewhat since my first post: For the oven I'm using a 13.8mm ID pyrex vial cut down to about 65mm length Nichrome winding is 3 parallel windings of 0.5mm which delivers about 75W from a...

woah, new forum layout. shiny. Made some progress on my bud toaster copy, it is now in usable form I managed to jam the arduino code into a attiny84 (I'm not actually using any of hippies code, nor schematic/PCB design), made a little PCB and a wooden structure to support the heater and...

I think its mainly because the thermocouple is in the actual airflow somewhat, this sort of peak is unavoidable with that measurement. BTW where did you find teflon tubing? what is it called? you are holding it to the outside of the tube just with pressure from the leads? have you looked into...