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This contest is almost over valentine´s day , and i know you love your wife (or girlfriend), resistors, leds, microcontrollers, and all that funny stuff, (in that order, i hope), so why don´t to put it all together!
This project has been done in a couple of days with the mbed platform that claims to be a "rapid prototyping board", i think is a really cheap device to make some funny things (like this project) if electronic design is your hobby, or rapid prototypes if your deadlines are very close in your job.
I´m from Argentina, and i hope you like this project and my first submit to instructables.
The main objetive is to make a banner with a cooler, some leds and an mbed microcontroller (if you like Arduino is very simple to replace it).
This project has been done in a couple of days with the mbed platform that claims to be a "rapid prototyping board", i think is a really cheap device to make some funny things (like this project) if electronic design is your hobby, or rapid prototypes if your deadlines are very close in your job.
I´m from Argentina, and i hope you like this project and my first submit to instructables.
The main objetive is to make a banner with a cooler, some leds and an mbed microcontroller (if you like Arduino is very simple to replace it).
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- mbed microcontroller: http://www.sparkfun.com/products/9564
- 5 leds (the colour you like), red for valentine is perfect.
- 5 820ohm resistors.
- A protoboard (like http://www.sparkfun.com/products/8619 ), you can made your own, but remember the cooler is not very strong.
- A PC cooler (is better if you want to use a CC motor much stronger, but beware for the current consumption).
- A 9v battery.
- A plastic coke lid.
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The LPC1768 has low power modes, and is very easy to configure.
The software version i posted is a simple one, and anyone can improve it.
Another thing to improve this development is that the mbed has 2MB of flash that can be accessed as a filesystem, so a lot of images could be stored, and reproduced.
I wish I can register on their site but they require me to buy a mbed first.
I believe the mbed/LPC1768 has dedicated battery backup abilities, you should use that and make it tell the time.