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Designing my Vape - next steps?

Discussion in 'DIY' started by ac1dg, Sep 26, 2017.

  1. ac1dg

    ac1dg Member

    Messages:
    8
    Hi all,

    because some friends and me were not that satisfied with the market of portable vaporizers, I decided to build my own.

    The main goals were as follows:
    • Convection based - fast and high efficiency
    • Made out of trustworthy materials (wood, glass, metal - no plastic in the heat path
    • Chargeable via Micro-USB
    • Integrated battery should last several sessions
    • Cheap (less than 20$ worth of materials)
    It uses a push-button to activate the heatup. When the light changes from red to green, the chamber has reached the programmed temperature and you can draw while holding the button (somewhat similar to grasshopper). It lasts 3-5 sessions.

    This is the current prototype:
    [​IMG]

    Currently I'm building some more prototypes for my friends for testing, but I am a little bit lost on how to continue with the project. I am not quite confident that I can sell it as a product. There has to be more time spent for fixing bugs and simplifying the build process. Because of that, I also am thinking about going open source...

    What do you think?
     
    Summer, mixchu69, MaadVape and 17 others like this.
  2. Hippie Dickie

    Hippie Dickie The Herbal Cube Manufacturer

    Messages:
    2,537
    Location:
    where the Cube rules!
    do you want to sell it as a product?

    is this like a MFLB device - a heated screen?

    i tried and abandoned a push-button for powering one of my very early vape designs because the current flow, >3A, would burn out the push button after a while - so, i offer that bit of experience for your consideration.

    i have gone open source for my design because i'm pretty sure i won't live long enough (i think i've got 20 years left) for the USA laws to change and make it legal to make, market and sell a vaporizer for cannabis.
     
  3. Prolusio

    Prolusio Well-Known Member

    Messages:
    250
    Location:
    Canada
    I think that looks pretty slick man! Definitely intriguing.

    Does it have a way to turn the unit off for carrying out and about so we don't accidentally hit the trigger button?

    Can you elaborate more on the bowl/heater design?

    What's that MP made of?

    How fast does it recharge? 5 sessions would be do able for carrying out and about; but if it's possible to only get 3 out of it I'd hope it can recover for another session in a reasonable time.
     
  4. Abysmal Vapor

    Abysmal Vapor Shaman of The Pyramid of Orlin'Malah

    Messages:
    3,189
    Location:
    7th heaven - 666th pit (EU)
    Welcome to the forum dude ! :)) Will be following this thread with interest . Please do post pictures of the internals and airpath and stuff !
    Cheers !
    --------------------------------
    @Hippie Dickie The guy said his unit is convection, so i guess it is similar to ESV 2 and firefly in technology ?But i am also getting confused with that programed chamber temp.. which might mean that the maker is confused of what convection really is :).
     
    Summer and GreenHopper like this.
  5. ac1dg

    ac1dg Member

    Messages:
    8
    Hi all, thank you for your replies :)

    It's not a heated screen, but a coil of resistance wire underneath the screen which heats up the air when you draw. So it actually is convection.
    I am using a custom made PCB for controlling the heat using a mosfet, which is capable of delivering up to 120 amps. The pushbutton is only used for sending the signal, so no high power there ;)

    Currently no. But it would be no problem to rewrite the software to stop heating, if there is no one drawing after some time. It actually never happened to me, but it's definitely a safety feature I should implement...

    Currently, this is aluminum with paper wrapping to insulate from the heat :lol:
    I will probably change it to stainless steel with a wooden cover.

    It fully charged after about 1h20m. Since it's using USB, you can also use your Powerbank to charge it on the go. You can even use it during charing.

    I will post some more pictures later on...
     
  6. ac1dg

    ac1dg Member

    Messages:
    8
    Some more pictures of one of the older prototypes:

    [​IMG]
    Bottom cover removed. Here you can see the coils and temperature sensor, as well as the old messy PCB
    [​IMG]
    All parts separated
    [​IMG]
    CNC milled models of the latest version. The upper one is birch wood, the rest is teak
    [​IMG]
    View from the top during heatup. Here you can se the coils in action as well as the temperature sensor just beneath the screen
     
    Summer, vtac, mixchu69 and 11 others like this.
  7. Abysmal Vapor

    Abysmal Vapor Shaman of The Pyramid of Orlin'Malah

    Messages:
    3,189
    Location:
    7th heaven - 666th pit (EU)
    Hey there !
    Have you thought of isolating the airpath from the wood ?(maybe a metal sleeve or quartz/glass ? )
    Also what material is that sensor made of ,i think there are some versions which involve a glass bead as an insulation for the temp sensor .
    Do coils need to glow red to achieve needed temp for vaporization ?
    Looking at the photos ,it reminds me even more of ESV 2.0 ,you might wanna look the thread if you are not familiar with the model.
     
    duff, The Beagle, GreenHopper and 2 others like this.
  8. KeroZen

    KeroZen Chronic vapaholic

    Messages:
    2,689
    Location:
    On Air
    Great but that glowing has me worried to.
     
    The Beagle and GreenHopper like this.
  9. Hippie Dickie

    Hippie Dickie The Herbal Cube Manufacturer

    Messages:
    2,537
    Location:
    where the Cube rules!
    nice job! i'm jealous of your CNC milling machine ... that's what i want to get someday.
     
  10. ac1dg

    ac1dg Member

    Messages:
    8
    I did, however I don't think it's necessary. The wood gets barely hot, even after a long session and there are no signs of burnings.
    It's a PT100 temperature sensor (platinum) which is rated for +600°C. I think the holder is made of ceramic.

    While drawing on the unit, they won't glow. However, during the heat up phase they currently do. This can be prevented by a wire with higher resistance or longer windings. Also, the current through the coil could be limited during heat up, but it will take longer to reach the desired temperature then.

    You are right, they use quite the same technique. Never heard of this one... It's ugly plastic, thought :lol:
     
    duff, The Beagle, KeroZen and 2 others like this.
  11. Abysmal Vapor

    Abysmal Vapor Shaman of The Pyramid of Orlin'Malah

    Messages:
    3,189
    Location:
    7th heaven - 666th pit (EU)
    @ac1dg Wooden vapes > the rest IMO :). I think the ESV 2.0 is made of aluminium but i might be wrong,never looked into the details cause of the 350 $ pricetag.. LOL..
    IMO you should get rid of glowing red wire issue, even though it is not damaging the wood,cause with use ,i am sure there will be a lil bit of herb and residue that might fall onto the heater and result in combustion,which might make that wood around to suck some of the smell,which i imagine wont be easy to get rid of,which have been the case with some other wooden vapes i've used in the past :).
     
    The Beagle likes this.
  12. Rat0

    Rat0 Member

    Messages:
    15
    Location:
    Saint Petersburg, Russia
    @ac1dg what do you use temperature sensor for and also wondering about PCB. Why don't you use 18650 batteries, I suppose because of their price?
     
    KeroZen likes this.
  13. KeroZen

    KeroZen Chronic vapaholic

    Messages:
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    Location:
    On Air
    What price, you mean $5 a piece? :D No excuse not to use Li-Ion these days...
     
  14. Fat Freddy

    Fat Freddy FUCK CANCER TOO !

    Messages:
    1,035
    @ac1dg .... check your personal messages
     
  15. ac1dg

    ac1dg Member

    Messages:
    8
    The temperature sensor is used to measure the temperature, obviously :)
    It is placed directly in the airflow, so the air which hits the herbs is exactly the right temperature.

    The PCB is used to read the sensor's value and give power to the coil accordingly.

    I don't use 18650 because they are way too big for the vape :D
    The batteries I use are Li-Polys and provide much more power than Li-Ion. Their price is about the same (5$)
     
    Andreaerdna and Abysmal Vapor like this.
  16. Rat0

    Rat0 Member

    Messages:
    15
    Location:
    Saint Petersburg, Russia
    Have you designed PCB yourself? Your prototype turns to be very complex design, mate, and it's awesome)))
     
    Last edited: Nov 22, 2017
  17. ac1dg

    ac1dg Member

    Messages:
    8
    Yes I did design it myself. It is the second version already, still had some minor mistakes in it, though.
     
  18. ChaiLifeOR

    ChaiLifeOR Active Member

    Messages:
    40
    I’d love to test one out as a medical user with conditions in just about every category that one can get a card in.
     
  19. kuzko

    kuzko Well-Known Member

    Messages:
    205
    This thing looks cool, obviously reminiscent of the MFLB. Are you set on the rectangle shape of it? I know small is always good but something I’ve always desired and never seen is a classic pipe shaped vaporizer, something that looks like what it’s used for. Otherwise, we are all vaping out of Walkie-talkies. It looks like maybe you could fit all of the internals in a small wooden pipe, could even have a Churchwarden stem to help cool down the vapor.

    You are so far along so I doubt your lookin to reshape the device, just throwin it out there.

    Looking forward to seeing how you progress.

    From The looks of it, it looks like a finished enough product, except the mouthpiece. Would MFLB mouthpieces work on this? But the internals still need work? If you are looking for more beta testers, you’ve come to the right place!
     
    Summer and JCharles like this.
  20. ac1dg

    ac1dg Member

    Messages:
    8
    Summer, Hippie, rz and 3 others like this.
  21. RastaBuddhaTao

    RastaBuddhaTao Well-Known Member Manufacturer

    Messages:
    843
    Great project! Rumor has it that there is some open source heater tech in the DIY that might interest you @ac1dg
     
    AJS, kuzko and Abysmal Vapor like this.
  22. CrispGreenLeaves

    CrispGreenLeaves New Member

    Messages:
    9
    I don't really have any time to give you some ideas for next steps but ill just say, looking good man!
     
  23. HindelangGG

    HindelangGG Member

    Messages:
    80
    Wow looks really nice and interesting
    I would really like to hear if you improved it in the meantime a little more. And if so is it working properly?
     
  24. kuzko

    kuzko Well-Known Member

    Messages:
    205
    Any updates? Would very much like to hear how this is coming along.
     
    Jill NYC likes this.
  25. Fat Freddy

    Fat Freddy FUCK CANCER TOO !

    Messages:
    1,035
    ^^ Me too!
     

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