How to Make a Lab Magnetic Stirrer. Chemistry.
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- Опубликовано: 11 сен 2024
- How to make a chemistry lab magnetic stirrer with a motor from a CD-DVD drive unit, a hard disk drive magnet and some esay materials like wood, a switch, jack connector, etc.
You only need to buy the magnetic stirrer bar, (or stir bar) i.e. on Ebay. It is not recommended to DIY the magnetic bar because the pro ones are cheap and covered with teflon, so they dont react with chemicals. goo.gl/dbXbIv or goo.gl/v7mYBL
en.wikipedia.or...
en.wikipedia.or...
I like the way this man made his video: dodn't cut his mistakes but just left them, so later he made it in the right way. Thank you.
Thank you for your comment.
True, I like makers like that, because one can see the mistakes and avoid them
I agree, a great video, no BS music, perfect. I wish more people would watch this and learn how to make simple clean instructional videos.
Thank you for sharing
Thank you for your positive comment. ʘ‿ʘ
thank you for this video
You can make a heater with it .
That was surprisingly satisfying to watch. Well done that man.
+Sam Stone Thxs!
I was thinking that a possible upgrade would be to be able to regulate the speed, but in the end of the video I saw that was also thought through. :) Very nice project.
Gracias, Espelufrío. Me ha alegrado verte por aquí, jaja. El lunes sale la versión en español en otro de mis canales, Cienciabit. Saludos. Nacho Simón.
Ah, respecto a la regulación de velocidad tenía pensado ponerle un chopper, pero queda más aparatoso y menos compacto. Por otro lado, pensé que era mejor ofrecer un proyecto más asequible de forma que lo pudiera llevar acabo más gente sin echarse atrás. www.fadisel.es/cebek-electronica/reguladores/reg-velocidad-para-motores-3-a-cebek-r-3_r_293_302.aspx
Good idea, good execution. For phase 2, we need a variable speed stirrer to work with diff size containers. Oh, and for the "sensitives" out there, show alu foil over the board to shield the EMF.
+Mike Ivsin Thanks for commenting!
One of the best youtube videos I have seen.
This is great im gona make it one right now....Thanks man.
Great video. Overly explanatory with no waste. No distraction. Like downloading from the matrix.
Thank you very much for your comment.
extremly useful project, much better than buying an expensive one. also gives you a bit of hands on fun when making it. very pleasant to watch
+Philip Manavado Thank you for your comment.
do you have any ideas on how to add a hotplate function to it?
+Philip Manavado Not by now. I would have to begin from stratch since the plate is has is plastic. Perhaps the ideal would be glass ceramic.
yeah I think so too, do you think an old coffee perculator hot plate will work?
+Philip Manavado It is possible. The only thing to take care is not to heat too much the magnet. ruclips.net/video/haVX24hOwQI/видео.html
Really well put together
Nice editing.
Anthony Kun Thanks!
Thanks for the hint about magnets and their plates !!
Very nice!
I started trying to make one of these about a year and a half ago, and started with basically the same things you used. I eventually shelved mine because some of my requirements weren't attainable at my skill level (variable speed with no moving parts aside from the switch and frequency knob pot, meaning a variable frequency quadrature encoder. I still don't know how to make one without rather complex circuitry.) It looks like you ran into some of the same problems that I did with this form, like the permanent magnet causing problems for the Hall effect sensor in the motor.
Anyway, I did make a SketchUp model for a housing, and even a cardboard sample. If you like (or anyone else, of course) I can provide the SketchUp model.
Cheers.
hi, do you still have it?
@@elvimaesalinas7971 I looked but couldn't find it. :( I think I lost the model in a HD failure a few years ago. :( It wasn't very complicated, just the general shape of most magnetic stirrers with power switch, control knobs, housing for the electronics and the magnet coils.
i really enjoyed watching this video, so clean and neat!
+moh Thanks!
great video, make sure the weight of the magnet is centered over the spinning axis for the best longevity of the motor.
+Ryan Stimers Thank you!
A PWM module would be perfect for this !
I made a similar stirrer out of a cigar box but I added a pot to mine. I don't know why but after a short while my spin bar starts to tumble, I tried resetting my hdd magnet but no joy. I also tried flipping the magnet over with the same result. Do you have any suggestions? Thanks
Cool I might just try this, great video.
"Better use Speed Control for Stir Plate!!"
Hi. How much do you charge for custom made projects?
Nicely done. I worked in a biology lab for years. Those lab stirrers ain't cheap. If I remember correctly, both the motor and stir bar itself are magnetic. Is that correct?
Yes. The "pill" is a magnet and the motor has another magnet on the shaft.
mopatin Thanks for the info.
Thank you too!
ty. as other have said, you seem to care about the viewers time and concentration, a lot of vid makers seem to think their ass should be worhiped for providing info even though we watch a step get repeated 20x and hear about their day for 10min b4 the video. BTW lab/bench power supplies that can go from like 0.1v to 35v and limitable 0-4 or 5 amps are down to around 100 usd on ebay or amazon. you seem like the type that might benefit from having one.
und wo hast du das stebchen her was du ins Glas gegeben hast ???
Beautiful work and thank you for posting this. I want to make this item for my colloidal silver but have no technical experience and would have loved some audio. Can anyone tell me which potentiometer/rheostat I should buy on ebay. Your help is much appreciated.
no sorry :(
Super cool!
Really good video!
+Chiron Thank you!
Nice work. should have put a pot on it for variable speed.
Thank you!. Yes you are right, but I wanted to simplify the project for not very techy people.
+mopatin and many thanks for not putting in annoying music like I've seen so many others do. Top Shelf video mate
Thanks again!
Thanks. I made one like this.
That's a great idea
Awesome video thank you.
+Frank Dominguez Thanks for the comment!
Great! I was just planning on refining some uranium..
I will build mine with lm317 in it to controll speed. Best and cheapest way of what it does (1 dollar for lm317, resistor and pot-meter)
cool man, thanks
Thanks to you for commenting.
thanks
I suspect this video if fake.
This is not a natural video and believe it to be manmade, infact he may of made it himself.
I suspect that might be purple marihuana in your avatar
+brandon it is I grow it
Nice :)
brandon its not purple haze that's just the LED lights - could do with some Jimi Hendix shit
I just use a pc fan with magnets, but this is way better
Wow
Can it move faster? I need the faster one
+Reiger Erickson Use a PC fan instead.
use a lawnmower
pc fan can't move faster... i tried dinamo..m
+Reiger Erickson just buy a motor off the internet they a so so cheap
+Reiger Erickson me personally I would add a extra volt or two that will speed things up and you would get away with it without burning it out.
süper süper
Why not simply use an USB fan?
...or buy a bunch of cheap neodyms off ebay
You add potasyumetre and okey
everybody knows moreor less how to screw a screw or make a hole not so many ppl are good with wiring though...wouldnt hurt to give a bit more depth into wiring...
A lot of work for something you can get off Amazon for like 60 bucks.
Gods goods goods ชอบมากๆสนุกดี
Thank you!
:/ better to use pot ne555 and pwm
But still good enough
I have a DC motor speed controller (chopper) www.fadisel.es/cebek-electronica/reguladores/reg-velocidad-para-motores-3-a-cebek-r-3_r_293_302.aspx
But I prefered to keep it simple for more people. Thank you.
- but you'll need a pcb, a pot, a mosfet, 555 and components and on top of that the 12v transformer.
- While his works just as good, though it wont be able to reach super low speeds, and only uses a variable transformer.
- A good point inbetween would be a lm317 with a pot, Should work quite well.
- And another even simpler, which i use in my pc is a small heatsink, a irfz44 and a 15 turn 100k trimpot. It's uberlly crappy, the tempco is horrible but once it warms up it stays quite stable.
I use it to control a noisy 6W fan. The trimpot works as a voltage divider conected to the gate, so in the ciruit, it just looks like a high wattage pot. That mosfet has low Ron and has a good diode built in.
It should have no problem with that motor. And although the temperature coefficient is horrible, it can go from rail to rail and is really simple.
I didnt even use a pcb, i just press fitted the trimpot inbeteen the heatsink fins and then just soldered everything together and then heatshrink.
The only problem that it might have is that my pc has regulated 12V, while those transformers might read 17v without load which could mess up the mosfet gate. A 10k and a zener should fix it.
Well, there's a few ideas :P
Laharl Krichevskoy you don't need pcb for few components
Do classic deadbug-style
12 v psu has everybody laying around
Sure you need few caps diode and maybe small low power transistor
Or replace that all crap and use high power one then ne555 mosfet pot few caps and resistors and you'r done (or maybe even better circuit)
If you don't use pcb and solder anything deadbug-style with art and creativity it will look awesome
Your idea is good too but complicated to some young players
I preffer classic
cool music
+peter madsen ye love this one :D
5:22 waaaaaaaaat
piss)))
Thanks, but I'll use a spoon.
3:14 brutal smartphone killer
lol
it costs $35 to buy one. Why all this effort?
you make, you learn more. A time might come when a person is constrained on money, time, and/or supply, the experience gained there might be very beneficial with all its mistakes(wrong power switch placement), weirdities(audio socket/plug for power) ...etc.
And it's always good to know how this thing is basically made, so in case something breaks, you know how to fix it.
too slow