This little gizmo adds the iconic "sleeping Mac throb" to an ordinary Apple logo decal.

The idea for this came about when passing by the Apple Store in Palo Alto, California late one night. After hours, when the store is "asleep," the lighted logos out front pulsate just like the power indicator on a sleeping Mac, and I just about fell over laughing. Unrelated, the following day a friend showed me his new Toyota Yaris, an adorable little economy car whose resemblance to the original "jelly bean" iMac was made even more apparent by the Apple logo decal he'd placed on the back window. The two just screamed to be combined...

Step 1: The Device

I'd been trying to cook up any sort of simple project using one of Microchip's PIC10 microcontrollers, a minimalist programmable device costing less than 70 cents apiece. Just a few parts are required:

- The microcontroller itself. In this case I used a surface-mount PIC10F206 as it's what I had on hand, but just about any simple microcontroller will do provided you have the facilities to program it.
- A white LED. I've made throbbers using both surface-mount and 3mm through-hole varieties.
- A 3 volt lithium coin cell (CR2032 in this case).
- Battery holder.
- Circuit board to contain the components. Since I was using surface-mount parts, I opted to etch something for the occasion. If using through-hole components, the design is simple enough that a small piece of PCB perfboard with wire jumpers is likely sufficient.
- A clear rubber suction cup; pack of six from local hardware store.
- Glue of some sort. Hot-melt glue, silicone adhesive or cyanoacrylate "Krazy Glue" should all work fine.
- Apple logo decal adhered to a clear glass window.

Two components that typically appear in microcontroller and LED projects are conspicuously absent: there's no current-limiting resistor for the LED (the lithium watch battery used is intrinsically limited in current), and there's no decoupling capacitor across the microcontroller's power leads (simply wasn't needed in this noncritical application).
<p>I've been designing throbbers into products since the early 90s, and wanted an easy breadboard one that'll drive a white LED from 2V up. Having scored reels of 10F206 and LED driver LM27952 from ebay a while ago, time to make some PCBs. Worked first time - and thanks to pburgess for the nicely written code. I've got extra pins spare, to time to fill the rest of the ROM with a candle flicker table and add some simple LED flash options, to make this a general purpose programmable status LED. Yay!</p>
i would like that to do that project, but there's no schematic :(<br><br>thanks!
Do you have the schematic please?<br><br>thanks! :)<br>Good night! :)
Pleace, upload .hex file.
&nbsp;Ironman, anyone?
From here <a href="http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en020032" rel="nofollow">http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en020032</a>&nbsp;can you please tell me which to buy that will work that is not surface mount?<br /> <br /> Thank you
&nbsp;Howdy. The PIC10F206-I/P or PIC10F206-E/P are 8-pin DIP (through-hole) versions of the chip.
So either of those would work?
is there anyway I could purchase one of these from you? Like the guy above, my soldering skills are not what they could be... I make a mess of things. hah let me know
very nice i just coding it in i removed the code about if power is on and that i just wanted to see the cool lighting effects
Hahahahaha awesome idea. I like to pretend I'm making them throb with the macs a my school, and also with my sisters macs.
I agree, My friend and I both thought they were awesome and due to my lack of time (other projects and getting ready for school) I would be willing to pitch in some money to buy one!!! And you don't have to include the sticker considering most of us have one, and plus if you ask the Apple store the always give you like a sheet of em. To end my babbling I will finish off saying that personally I would leave out the sticker and stick it on the rear window of our car and have it throb when the car is off or something like that - making me look like and apple enthusiast
If you ever start to make these to sell, let me know so we can get you setup with a website! This is such a cool thing....thinkgeek.com would love it! I definitely want to know when you make these! I _might_ be able to do it but as someone else said, soldering skills, not ot mention the controller thing, would be a challenge for me. I'm better with websites that I am with microcontrollers and such...
thats waaaay cooler than a suction cup garfield although if you leave the code alone but just attach a light sensor found in nightlights so that it will only turn on when it gets dark it will look like a sticker by day and a throbbing light by night. also it would save battery.
heheh thats cool, i dont know where id put it though :S still very nice !
I also would be interested in purchasing a preassmbled unit for use with the 3.3v (if I remember correctly), power lead from a standard atx motherboard. Working on a case mod (non-hackintosh), and would love to use this idea for it. I know the new Antec case that Psystar uses has a dual-color Blue/Orange module for their power led/button. On - Blue, HDD Activity - Orange/Blue, Sleep - Blinking Blue.
Could i just buy one off of you? This is a little too involved for my soldfering skills! i want one for my IBM aptiva converted to iMac.<br/><br/>the pics:<br/><a rel="nofollow" href="http://www.ipodhacking.com/forum/picture.php?albumid=33&amp;pictureid=112">http://www.ipodhacking.com/forum/picture.php?albumid=33&amp;pictureid=112</a><br/><a rel="nofollow" href="http://www.ipodhacking.com/forum/picture.php?albumid=33&amp;pictureid=120">http://www.ipodhacking.com/forum/picture.php?albumid=33&amp;pictureid=120</a><br/>
We could probably arrange something, sure. Question on your project though: is this a Mac motherboard and guts put into an Aptiva case, or is it PC internals dressed up Mac-like? If the former, there should already be a "sleeping" LED connection you can tap on the motherboard, no need for all this additional microcontroller stuff. If the latter, do you want it always "throbbing," or only when the system is actually asleep? The "always" case is much simpler, we'd just need to tap 5 volts from one of the drive connections.
Sorry about my late response! my computer does not have any apple parts at all, it is using a biostar mb with a 2.8ghz Pentium 4. It is (almost) running iAtkos 2.0, which is leopard 'modded' to work with standard Intel systems. Contact me via PM or email (i think it is displayed in my profile). Thanks!!!
Oh and Btw, what do you think about adding a hacked garden light to act as a power source for this project? Obviously not portable but its works if it is for car use.
I've considered this, and pried open one of those solar garden lights for ideas, but unfortunately my electronics-fu is weak...I'm still a little lost as to how the voltage from a single rechargeable cell (1.2V) is stepped up to run the 3V white LED...then got distracted with other projects in the interim. Will update this if I ever puzzle it out though, thanks!
I think they stick in one of those voltage booster circuits in there (cheaper than 3v worth of solar panel). I have seen the odd 2 cell light, but they're a pretty rare bird. People throw out solar lights all the time, usually if the NiCd packs it in, or some part of the cheap plastic housing breaks. I think I have about 50 of the things now, in various states of function.
Great idea!.. The only issue would be reduced neatness factor. :-( K.
Very nice! I was planning on making my computer "breathe" sort of like this
(contemplates designing a colour-cycling Windows logo and a little animatronic dancing penguin for similar back-window displays) (decides against it) Presumably, you could use the PIC program space for a table of on-off durations to be used with a simple timing loop, so your logo could pulse out sequences of primes or the morse code for "MORSE RULEZ OK HAM RADIO FTW" or something? I think this is actually quite a versatile platform for lighting effects... +
Very clever and neat! Kudos!.. K.

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