LED MAGNET BOX (Light)

show how work

Step 1: Led Magnet Box 3d Printer

Led Magnet Box 3d Printer

Step 2: What Need

4 X led smd 5050 for Each box

1 X Mini 360 H DC Step Down Power Module Lm2596

1 X slide micro switch 12mm

4 X Neodymium Magnet 8*2mm Circle for Each box

1 X usb micro board

4 X diode IN5819

Step 3:

Step 4: 3d Models

now go this https://goo.gl/qmB78N

and download 3d models and print whit abs and you dont need suport for printing

Step 5: Solid Magnets and Use Super Glue and Solid Led

solid magnet

Step 6: Solid Leds

afte solid 4 smd led you can use .

Step 7: Finish

one usb box you can power all magnet box

Step 8: End

pls like and share .

tanks.

Comments

[ccrdllo]

Love this idea! Are you able to use more than 4 LEDs for each cube? Would that change anything in the formula?
Also, do you need a specific type of wire to solder the LEDs together?
Thanks!

[wannabemadsci]

Really neat!

Is polarity an issue? In other words can you orient them so that they connect with the magnets but don't light up? Have you thought of using a bridge rectifier between the magnets (+/- power bus) and the LEDs. That way regardless of bus polarity the LEDs would still light.

[uwezi]

even though he has not described it, but it appears that he has built a bridge rectifier from discrete diodes - you can see it among the images in Step 5.
With this design you will have to use a bridge rectifier because you will have to use opposing magnetic poles on either side of the cubes otherwise...

[MaskMarvl]

The way he built them, you probably can't connect them the wrong way because the magnets will repel each other if you try to connect them the wrong way.

[uwezi]

no, it wouldn't work, because the electrical polarity as compared to the magnetic would have to be reversed on either side and then the cubes could not be rotated upside down - see the attached sketch

[MaskMarvl]

I don't understand your drawing. In the sample on the left where you've rotated the cube the magnets are repelling each other so they can't connect. If you rotate it to where they DO connect, the electrial polarity would be off but that could be solved by simply criss crossing the wires inside the cube. No?

[uwezi]

no, criss-crossing the wires would not help - just take a square post-it note and draw the connections and the magnet polarities for yourself and you will see.

The problem is that the cubes are supposed to be mounted together on either side - you never know which side ends up as top and which as bottom - only diodes will solve this problem...

[Hessam ghanizadeh]

tank you so much for this

[Yonatan24]

Where did you buy small LED lights? Can you send me a link?

Thank you!

[Hessam ghanizadeh]

hi and tanks for comment .

you can search this (100pcs 5050 SMD Chip LED Diodes warm White) in google and find to buy .

[NLC_Engineering]

I'm surprised soldering directly to the magnet didn't demagnetize it. Usually its recommended not to solder to it because of that issue, but looks like you managed. Nice project!

[Sandbird]

Any info about these ?

And why do you use a Step Down converter :/ ?

[Hessam ghanizadeh]

usb power is 5v and led smd 5050 is 3.2v and we need convert 5v to 3.2 . Each side we have 2 magnet Each negative and positive because This we need diode Bridge for Every cube . i know diode Bridge for convert ac to dc but fix negative and positive Problem. tanks for comment and sory for my bad english.

[Sandbird]

Ohhh, they are 3.2v..i thought they were 5v leds. And about the diodes ? What are their characteristics ? Which model are those ?
Thank again for explaining this to me :) And cool instructable btw!

[Hessam ghanizadeh]

im use IN5819 diodes and tanks you for comment .

[manattweb]

I can't follow this at all...I guess you need some existing knowledge about the concept and parts used.

[NoahB74]

No, it's just a language barrier issue. Understandably, English can be a challenge.

To reiterate:

1&2) Get all needed parts (listed)

3) 3D print the models linked on his Thingiverse (roughly a box)

4) Solder wire (this appears to be enameled motor winding wire?) to the backs of the magnets (2 per box) and Superglue them into place in the 3D printed components.

5) Solder the same wires onto the LEDs across all the pads.

6) Connect up the electronics as shown in the picture (USB input --> DC Converter --> Switch) and (DC Converter --> LED leads) for the first box. For additional boxes, solder wires between magnets and LEDS in series (Magnet --> LED --> Magnet) so they can be stacked.

Hope that helps! :)

[DIY Hacks and How Tos]

Cool project. I love modular electronics like this.