Simple DIY Magnetic Stirrer

@Andre above is a solution, but is non linear and more of a hit or miss. a Simple PWM (pulse width modulation) circuit works best for controlling brushless DC motors (ie: computer fans). The control is linear without compromising torque. Anyone with a soldering iron can do it, its cheap components and readily available:

PWM-1.png

SCHEMATIC
PWM-2.png

R8 = 22 Ohm for 12VDC

Constructed on Vero board

PWM-4.png
 
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So cool @Andre - looks so easy - and looks like it works superbly!
Someone should make a few and sell them!
 
hehe, after completing my mag stirrer I found the issue where the speed is much to fast... even used a 1.5 volt output to try and check if that works, yes, works fine with water and 50/50 mixes, but not when you go stronger on the VG...

So have to get one of these PWM controllers as well.. Luckily I found a kit available at communica that does exactly what I need... they even have a kit that allows for rotating the motor both ways... this I do not need, hehe... Going for the plain and simple PWM dc motor controller and I'm sure that this would work 100%....

other than that it works like a charm... construction was a *****... took a long time, hehe, tried getting glue for perspex, good luck, ended up using plain old super glue, hehe..

Will upload a picture of the complete thing as soon as I have it completed... just need this damn PWM controller still...
 
have to say, in the end, when using High VG juices, this does not tend to be a simple mixer anymore, lol... sure, if you are using 50/50 the fan setup will work... but other than that, nope... not so lekker, lol, this thing of mine has evoloved so much over time it's not even funny, hehe
 
 
ok, situation update, after looking for the above mentioned kind of stirrer, I could not get anything like it, right away, and trust me I looked... in the end, this made me wonder, why the hell not get like a food processor.... bloody hell guys, I found this

http://www.guzzle.co.za/specials/view/894613/

Check it out, it's on special at Clicks at the moment for only R199.00

went got it, came home, washed it out and started on the first mix, 85/15 vg/pg this thing is awesome, I did a 150ml mix of some new thing i'm trying to blend, and damn it works like a charm...

If you are having the same issues that I did with the mag stirrer build from a fan, try and get this while it's on special... also, your wife will love you for it, hehe...

will upload some pics of how incredibly well this thing works in a bit...
 
For a nice fan controller I would think one of these should do the trick as well

Fan-Controller.jpg
 
Derick said:
For a nice fan controller I would think one of these should do the trick as well

View attachment 24626
Click to expand...
Yes when using a fan from a pc, most certainly would... but when using a actual DC motor, with gears... the DC pwm dc motor speed controller is needed :)

I think for now i'm sorted, the thing I got from clicks works like a bomb.. did 450 ml of mixes in a short space of time, and all of them 85/15 vg/pg...

3 bottles of 150 ml each, hmmmm... now the steeping better not take to long, hehe :)
 
JW Flynn said:
Yes when using a fan from a pc, most certainly would... but when using a actual DC motor, with gears... the DC pwm dc motor speed controller is needed :)

I think for now i'm sorted, the thing I got from clicks works like a bomb.. did 450 ml of mixes in a short space of time, and all of them 85/15 vg/pg...

3 bottles of 150 ml each, hmmmm... now the steeping better not take to long, hehe :)
Click to expand...
The only thing I would watch out for when using that clicks mixer is introducing massive amounts of air bubbles into your mix. The bubbles will create a large air surface area for your flavours to evaporate and your nic to oxidize - but if it can mix slow enough not to make bubbles then I say you have a winner :)
 
it does make those bubbles... works pretty well... and you mix it up in a matter of 2 minutes... so nic and taste does not have time to escape, my previous mag stirrer worked like this and made a 150 mil mix of juice, took me a long time as I had to make it 30 mils at a time, hehe

But ja, after about 2 minutes of stirring into bottle and sealed, so the nic / taste stays in... I found this to be true for the previous batch I did... and still vaping on, hehe
 
JW Flynn said:
it does make those bubbles... works pretty well... and you mix it up in a matter of 2 minutes... so nic and taste does not have time to escape, my previous mag stirrer worked like this and made a 150 mil mix of juice, took me a long time as I had to make it 30 mils at a time, hehe

But ja, after about 2 minutes of stirring into bottle and sealed, so the nic / taste stays in... I found this to be true for the previous batch I did... and still vaping on, hehe
Click to expand...
Awesome - well if it works it works :)
 
Here is what the mixer I made looks like, even though it now requires a Pulse Width Modulation DC motor speed controller, will get it at a later stage, lol, found something that works right out of the box... as you will see below, and also according to my posts up top... :)

20150406_170353.jpg

This is what I got from clicks and seems to be doing a pretty decent job.... plus, it keeps me wife happy, hehe

20150406_130032.jpg
and the finished product 150 ml in a 250 ml bottle smells like heaven!!! cant w8 to vape on that, hehe :)

20150406_132742.jpg
and lastly a vid of the mixer working it's magic

 
Wow, @JW Flynn
That is some serious mixing!
What juice is that? Looks so milky...
 
Silver said:
Wow, @JW Flynn
That is some serious mixing!
What juice is that? Looks so milky...
Click to expand...
it's actually a custard thing i'm trying... hehe will post recipe after I have had a chance to try it and happy with it :)
it's looks like that because of the bubbles injected into it while mixing... Will post pictures of the mixes after they have settled, and from previous experience after a bit of steeping they pick up colors pretty darn good, hehe
 
Derick said:
Trex 250? :)
Click to expand...
hehe no, I wish, lol, will get the kit and build one at some stage... the ones in the picture are, a v911 and one of two v922's then there is a canopy for a 450 pro.. but really only flying the 450 and the 550 nowadays :) have to say, haven't gone for w while, but seeing as projects around the house are starting to thin out for once, I'm probably heading out for flying come the next weekend or so, hehe :)

can post a pic of my collection at some stage if you want....

Remembered seeing yours there in the kitchen area a while back, hehe
 
JW Flynn said:
hehe no, I wish, lol, will get the kit and build one at some stage... the ones in the picture are, a v911 and one of two v922's then there is a canopy for a 450 pro.. but really only flying the 450 and the 550 nowadays :) have to say, haven't gone for w while, but seeing as projects around the house are starting to thin out for once, I'm probably heading out for flying come the next weekend or so, hehe :)

can post a pic of my collection at some stage if you want....

Remembered seeing yours there in the kitchen area a while back, hehe
Click to expand...
Yeah, been about 6 years since I flew - sadly no time anymore, but they are there waiting for in case, one day :)
 
Derick said:
Yeah, been about 6 years since I flew - sadly no time anymore, but they are there waiting for in case, one day :)
Click to expand...
hehe, it is a lovely sport, when you get used to flying around a couple of grand, and every time you try something new you practiced on the flight sims... eish... that is a bunch of adrenaline right there, doing it with the real chopper, hehe, and even worse when you go from the 450 to the 550 trying new things, hehe...

taking into consideration that a crash on the 450 cots you for a light crash about 1 grand, plus or minus where as the 55 is upwards of like 3K every time...
 
JW Flynn said:
hehe, it is a lovely sport, when you get used to flying around a couple of grand, and every time you try something new you practiced on the flight sims... eish... that is a bunch of adrenaline right there, doing it with the real chopper, hehe, and even worse when you go from the 450 to the 550 trying new things, hehe...

taking into consideration that a crash on the 450 cots you for a light crash about 1 grand, plus or minus where as the 55 is upwards of like 3K every time...
Click to expand...
Yeah, gets to be expensive and both Melinda and I flew and had our own - but we flew with the clones and such, ended up a bit cheaper at least
 
Derick said:
Yeah, gets to be expensive and both Melinda and I flew and had our own - but we flew with the clones and such, ended up a bit cheaper at least
Click to expand...
true, my 450 and 550 are align models, but still... I think it also adds to the adrenaline rush you get when you flying... lol, crash and wait till payday to repair, lol... but now with vaping costing me so much, lol..... I need to slow down somewhere...
 
lol, the wife just put some vanilla ice cream and strawberry's in the clicks bought mixer... man does it taste nice, hehe, she is loving it almost as much as I was earlier today, hehe
 
oh wow, even better, if it's possible, lol, those of you who know the cookies and cream shooter, put some ice-cream in this thing, and two shots of that, bloody hell!!!! this is something i would like to vape, darn it's nice!!!!
 
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