DIY Button Battery Homopolar Motor - Science Experiment 

If you could invent anything, what would it be?

2:11 who hurt you dave

this channel didn't devolve into fake lifehack channels over the years. I'm really impressed! keep up the good work!

"Amazing, huh?" - DaveHax 2020

What are the odds that I'm fidgeting with a battery and getting a youtube notification about a battery toy video? 😂

Some very important bits of information that were missing from this video: - The magnets pretty much must be neodymium types. Some 'refrigerator' magnets of the same size, shape an appearance will not be string enough to result in a working motor. - While most round neodymium magnets are polarized with N on one face and S on the opposite face, there are indeed identical looking neodymium magnets that are polarized 90 degreed out from when it necessary, and they won't work. - The copper wire must be conductive at all points where it touches the end of the battery, and also where it touches the magnet(s). The wire can be plastic insulated or lacquer insulated for the rest of its length, but it is usually best to use completely uninsulated wire. - There MUST be an electrical circuit, with current flowing from the tip of the battery, through the wire, and back to the opposite side of the battery via the conductive nickel plating of the magnet(s). It is a LOT of current, as the battery is essentially being short-circuited. Larger batteries can produce the same amount of current for a longer period of time, so a "AAA" cell will last longer doing this than a button cell, a "AA" cell will last even longer, a "C" event more, etc. But regardless, the run time is not very impressive, and a partially drained battery/cell either won't work at all for this, or else the wire will spin slowly. - It should be clear from the above that the wire must be making an electrical connection with the magnet(s), but you want to form the wire so it is pressing against the magnet with just enough pressure to assure a good electrical connection, but not any more pressure than that, or the friction will slow the motor down.

When he said “pretty cool huh” I felt that

What is your catchphrase "Pretty cool huh?" Or "Amazing huh?"

Pretty cool huh ❤❤❤

Very cool and useful, forget boring physics with Dave!

That is actually so cool!

Science is an interesting and amazing thing. For me to invent something would drain my brain just coming up with something fun. Great video mate

It is 7h11 in the morning ,South African time.I finished my New York wordle game and this is my first best video for today .Thank you.Can't wait to try it.Vetri South Africa 🙏🇿🇦🙏

I JUST remembered about this channel after not seeing a video in YEARS after a little bit of trying searching finally found it. I absolutly LOVE how everything is still the same, same songs, same calm voice, same style. I loved hearing again "Pretty cool, huh?".😍😍😍

That is bloody awesome! Thank You for posting this!

thank you

Finally, someone found the starting point of making ufo

This was so cool!

basic electrical and magnetic fields best demonstration 😎✌

You're such a genius

I get a charge out of watching your videos every time.😄 Nice one!

Wow, very impressed 👍👏

U can make your own game with just battery and wire, I love it

Very cool, Dave. Nice video.

i made one of these homopolar motors - and it is sooo cool - simplicy and magic in one ✨

I did this for my science fair project.I won!!

Now that i know this imma make me something really cool. its gonna be such an epic art piece!🎨

this is really great visualization of how battery and magnetic fields interact. I always love to see science experiments to see how stuffs work.

I personally adore your egg slicing and hot knife cutting videos please please please do more. I love you Dave.

Kids at the next science fair should write you thank you notes... You just gave them the best demo project...

Your life hacks are pretty cool

Nice experiment !!

I love you DaveHax!

Great video lad keep up with the good work

When this lockdown is over, I will get down to the electronic shop and get the copper wire and give this a try. I think my grandson will love it. Thanks for video 👍

The best part is that the wire is also charging the battery from the magnet

It works with cable wire too. You may need neodenium still. But it worked with my neodynium cubes

awesome video

*Amazing Huh?* Nice video Dave😀

I remeber watching you years ago , the video i first watched was the Halloween one anyone remeber ?

Excellent ideas. Watching with full support from Canada 🇨🇦.

My favourite video!! Il love dave hax!❤❤❤💓

Nice motors! I'd like to see a short, where you do it with thicker wire, and an F-Cell battery. F-Cells can be found in 6-Volt lantern batteries, and I'd recommend getting an Energizer-branded lantern battery, to get 4 of them. Just be a bit careful, cutting off their connection tabs, once the F-Cells are cut out.

Them are cool little Motors it gets your mind going I've been messing with motors and lights ever since I've been a little kid

Finally I can finish my science project

Someone did well in school 😂😂😂 love your channel keep up the good work

Perfect dave hax hes so smart

I tried making this many times before and it was a success. If you flip over the magnet, it would spin the other direction.

Very nice project 's you are a genius

Yes, that's cool.👍

this battery 🔋 so cool 😎

Pretty simple huh !!!

If only the Earth was electric in nature and we could harness free energy to create something similar to this on a larger scale... Oh wait, it is, and we can. Tesla was trying to show us. Carry on.

Cool great shapes 💡

Came here after reading about DIY motors in Dr. Stone. Cool!

Pretty cool I think I will do this with my grandson he'll get a kick out of it.

Woah! 100 likes in the first 2 minutes of release! Shows how amazing dave is!!

The wire can't spin . Thought I done as you done in the vedio.

Thanks a lot for the video

Back ground music issss ssoooo nostalgic 😭😭😭 i supposed to watch u when i was between 8-11 best channel evrrr

Cara...isso foi muito bom!

Use rechargeble battery, they can produce up to 10 times bigger current! Motor will spin much faster! :)

AA+ battery is for my remote, im so happy about this,

Awesome

That soo good 😍

OMG 15 years old upload/my favourite movie❤❤❤❤

"here's a really cool spiral one i made" XDD thank you so much

Helpful experiment...so nice of you.. We are also doing such experiments....

Mr wizard used to do stuff like this . Great to see physics at work

i love the last 1 :-D

your much better then troom troom

🌷🌷Really amazing sir

I liked the old bgm

Nice im gonna try😁😁😁

This mans voice is like a anti-stress thingy

Hi Dave love the vids youake

Your hax are pretty cool huh?

Pretty cool huh

Для тех, кто не знает школьный курс физики это выглядит фантастикой

Why am I watching this videos instead of doing online school

Dave hax 2019 : "pretty cool huh?" Dave hax 2020 : "amazing huh?"

It's almost 2am in Belgium and we are amused.

If someone was to do this with a very powerful (for instance neodymium) magnet, would it make the wire spin faster? Or will it cause anything dangerous to happen? I googled it & it doesn’t seem like there’s any kind of well-discussed contraindication between (at least lithium) batteries & magnets. But the discussion was mostly around whether it would drain the battery. I was more concerned about whether it could heat up and/or explode the battery lol.

nice video

I love this

nice video what gauge copper wire are you using .for this project.

How does the current flow when the wire contact only one pole, the + ?

Why all people dislike this idea intelligent boy --battery and magnet make motor is nice

Smart! ❤

Why am I picturing a fabulous bear dancing on the ice?

2:48 it looks like a force field

Now that's Pretty 🔋⚡Cool⚡🔋. 😏

Haven't you already made these before in a valentines video

Did you forget to say PRETTY COOL HUH?

Excellent video

wow I've come here not long after the vid was uploaded - makes a change lol! Edit: I've said it before on another of your videos, - I wish I had a science teacher like you in school - I think I would have enjoyed physics (especially) a bit more than I did!

this is how a speaker works a magnet near the coil and current is sent trough the coil creating a piston effect

Parents: so you failed the exam Me: pretty cool huh?

Hey Dave, try attaching razors to wire and a really powerful battery and cut some cucumbers!

You are a nice guy