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Fairchild FAN5646 "Breathing" LED Inside a Crystal
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TOPIC: Fairchild FAN5646 "Breathing" LED Inside a Crystal
#65141
Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months, 1 Week ago  
I finally connected up one of my Fairchild "breathing" LED chips to an LED and made a video to show off the breathing effect.


YouTube Link

I know there are those here that have done similar mods and have previously commented that they're not keen on the fact that the chip is not programmable. I consider this chip a perfect entry level product into modding. It requires that you know how to solder and make a basic circuit. The price is great too, at $4 instead of the $12-$15 for the BlinkM chips.

If you do want to program the chips, they are programmable, but you will need to buy them from Fairchild Semiconductor, have more knowledge of electronics, the proper equipment like an Arduino board and other sundries, and lastly, all this will initially cost a bit more.
jchunick
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#65146
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months, 1 Week ago  
Love it. Thanks for the walkthrough.

I want to buy a couple of those purple crystals when you have some for sale.
natetaylor
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#65148
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months, 1 Week ago  
Awesome
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#65150
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months, 1 Week ago  
That's pretty cool! ...and indeed quite less expensive than my approach. But then, you would need to buy and assemble one Chip / on LED for every color you would want and solder them together for good together. But who would care, they are so cheap! Do you think you can minimize your circuit sufficiently so that it can fit within a floor's thickness so that your crystals can stand directly on your LEDs without an elevation? Also, where can you buy these chips already programmed? Can you buy them already with a different blinking frequency?
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#65151
Re:Fairchild FAN5646 5 Months, 1 Week ago  
biowizard wrote:
That's pretty cool! ...and indeed quite less expensive than my approach. But then, you would need to buy and assemble one Chip / on LED for every color you would want and solder them together for good together. But who would care, they are so cheap! Do you think you can minimize your circuit sufficiently so that it can fit within a floor's thickness so that your crystals can stand directly on your LEDs without an elevation? Also, where can you buy these chips already programmed? Can you buy them already with a different blinking frequency?

I started down the road of making the breathing crystals using your tutorial. I found a set of LiPo batteries on ebay for cheap as well as the quartz crystals. The crystals made it here, but not the LiPo batteries. I was buying so much supplies off ebay at the time that I forgot about the batteries and then it was too late to put in a complaint on ebay but the company in China still refunded my money, which was good. I had my Arduino and other supplies from your list waiting to be bought off amazon but didn't quite have the money at the time... then I stumbled upon the Fairchild chip on a forum post somewhere.

The chips come from here: www.ledsales.com.au/shop/index.php?main_page=product_info&cPath=148_182_236&products_id=706

They can be sourced from Fairchild Semiconductor or probably from another electronics supplier. The ones from the LED Sales website are not programmable, as far as I know. He gets them made to order on the boards with the capacitors. You could contact him and inquire about it.

I still want to do programmable ones, but I figured these ones would be a better starting point for me both in skill level needed and financially :-)

Speaking of the need of one colour of LED per chip and needing an assortment of colours, I have purchased a bunch of different colours and sizes of LEDs. The list is as follows and cost me about $40 on ebay:

120 x 5mm Red, Yellow, Blue, Green, White, Orange Diffused
120 x 3mm Red, Yellow, Blue, Green, White, Orange Diffused
100 x 1.8mm Red Yellow, Blue, Green, White Diffused

120 x 5mm Red Yellow Blue Green White Pink Bright Water Clear
120 x 3mm Red Yellow Blue Green White Pink Bright Water Clear
100 x 1.8mm Red, Yellow, Blue, Green, White, Water Clear

Here's a pic of my assortment of diffuse ones (the clear ones all just look white so no point in a pic of those):


I think that I will still have a base because the battery compartment and switch need to fit somewhere, and will show through the translucent resin. However, due to the compact size all the components will be able to fit into a much smaller base.
jchunick
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Proud Father of two mini-geeks; Daughter: "Dad, what does that say?" (after enchanting a diamond sword in Minecraft).
Me: "Sharpness 1, Knockback 1"
Daughter: "Oh man, that's sweet!"
 
#65206
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months ago  
Here are some pics of the next step in adding the "breathing" effect to a crystal cluster. This stage is the initial drilling and fitting of the electronic components - the LED, switch, batteries and 'plug'. I created the plug using hot glue as a quick and dirty method to test how well it will work... I want to make a nice plug-in unit for the pieces, but I have to source some contacts for the batteries first. The only piece I didn't add to this setup is the "breathing" chip. I also didn't hook up the switch yet as the most complicated part of this initial setup/configuration is figuring out how to connect the two batteries and how the LED will connect to them. It looks like to get thse into such a small area will take quite a bit of custom manufacturing, but I think it's do-able.

You may also notice all the boxes of those small cavern rocks behind me. I'll be eventually creating a whole host of formations and want to get these done before the the Caverns KS is delivered in November.

Note: I temporarily stuck the crystals in using a big block of plasticine that I get a lot of use out of. It doesn't dry, which is awesome, but can sometimes be a bit messy to clean off.






jchunick
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Last Edit: 2014/08/26 20:08 By jchunick.
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Proud Father of two mini-geeks; Daughter: "Dad, what does that say?" (after enchanting a diamond sword in Minecraft).
Me: "Sharpness 1, Knockback 1"
Daughter: "Oh man, that's sweet!"
 
#65207
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months ago  
Here are a couple more pics of various types of crystals I have bought off ebay and locally, from my local Michael's craft store. As well, my assortment of LEDs. I have diffuse ones in various colours, crystal clear in various colours, An LED sample pack from www.evilmadscientist.com from 1.8mm - 10mm, slow fading RGB LEDs, flickering LEDs for torches and the like, and just plain LEDs... I have also a bunch of resistors which were supplied with some of the ebay purchased LEDs. The resistors are for connecting up to 12V sources.

jchunick
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Proud Father of two mini-geeks; Daughter: "Dad, what does that say?" (after enchanting a diamond sword in Minecraft).
Me: "Sharpness 1, Knockback 1"
Daughter: "Oh man, that's sweet!"
 
#65213
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 5 Months ago  
Those little crystal clusters are AMAZING.

Seriously, please make enough so you can sell some. To me.

And can you share some pics of your workshop? You've got lots of goodies it seems.
natetaylor
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#66296
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 3 Months, 1 Week ago  
Sorry it's taken awhile to respond, but thanks for the encouragement!

I actually bought several boxes of the stepping stones from DF so I could mod and sell them. I'm still working out some issues. Mostly, it's to do with the very little amount of space I have to work with. Although, I think I have a solution to it now. What I'm going to do is mold and cast some pieces and a base onto the original stepping stone, then glue them together and that will give me the depth I am missing... it might also allow me to make a larger diameter hole.

The reason I need more depth is for the batteries. I'm using AG3's... they're 7.9mm in diameter. I can put them side-by-side, but then they take up too much room and are a bit more tricky to connect up in series to get the 3V needed to drive the 'breathing' chip and light the LED. If I stand them on end 'stack' them next to each other which is the normal configration for multiple batteries then I don't have enough depth to keep them flush with the bottom.

It's a very tight fit, but I think they'll be all the more cool because they will be so compact, even with a bit more height and extra material added to the sides to give it a more irregular shape.

Things have been a bit slow because I was also waiting for the drill press I wanted to buy to go on sale again. I had enough gift cards to pay for it on sale (except taxes)... so it did finally go on sale but by the time I went they were all sold out... then I had to get a raincheck and wait for the next shipment.... and, FINALLY! I now have it. Having so many pieces to do necessitated getting a drill press since doing it by hand is far too variable.


jchunick
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Proud Father of two mini-geeks; Daughter: "Dad, what does that say?" (after enchanting a diamond sword in Minecraft).
Me: "Sharpness 1, Knockback 1"
Daughter: "Oh man, that's sweet!"
 
#66321
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 3 Months, 1 Week ago  
I too would be interested in purchasing a few of these. Thanks for the video as well =)
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#66324
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 3 Months, 1 Week ago  
jchunick that is awesome!!!
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#68606
Re:Fairchild FAN5646 "Breathing" LED Inside a Crystal 3 Weeks, 5 Days ago  
Because I couldn't fit everything I wanted within the very small area I had available without a lot of trouble I decided to sculpt my own stone outcrop for the crystals. Here it is, done in milliput:





It is my first attempt and I'm already looking at it and thinking what I would change and do differently... so I may just do that.

I'm also still learning how to use the sculpting tools and how to work with milliput.
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Last Edit: 2014/09/26 20:15 By jchunick.
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Proud Father of two mini-geeks; Daughter: "Dad, what does that say?" (after enchanting a diamond sword in Minecraft).
Me: "Sharpness 1, Knockback 1"
Daughter: "Oh man, that's sweet!"
 
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