This is a sneak peak at my latest work (in progress).I am waiting for more supplies to arrive from Sparkfun, as I've become quite excited about Lilypad LEDs. I had no idea that this was going to become such an expensive hobby!
In the process of creating this book cover, which is currently being powered by a 9V battery (that is NOT small enough to be hidden away in the book's innards), I have come up with a couple of ideas for solutions, which I'm not yet sure will work.
Here's a look at the inside of the cover,
and the offending power supply.
1. Substitute one or more of the LEDs for a Lilypad slide switch to reduce the amount of energy needed to power the circuit, and bringing the total number of LEDs down to 10.
2. Substitute the 9V battery for a Lilypad power supply that allows a AAA battery to power up 10 X LEDs (up to 220 mAh). (Update: the power supply is also too thick!)
3. Cut a hole in the book block that is large enough to house the power supply before assembling it.
If you have another suggestion for a way to power these LEDs with a small and tidy energy source, please let me know!