LilyPad - LilyTwinkle with more than 4 LEDs ?

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1

Hi there,

I’m starting this project in which I want to attach to some costumes several blinking LEDs. I’m planning to use a LilyTwinkle

https://www.sparkfun.com/products/11364

https://cdn.sparkfun.com//assets/parts/ … 364-01.jpg

and this micro LEDs

LilyPad LED Micro - White (5pcs) - https://www.sparkfun.com/products/10753

10754-01.jpg600×600 69.9 KB
https://cdn.sparkfun.com//assets/parts/ … 754-01.jpg

The thing is that I want 20 LED lights (aprox) per costume, wired in parallel, would this work? what power supply do i need?

Thanks!

2

elunicotomas:
The thing is that I want 20 LED lights (aprox) per costume, wired in parallel, would this work?

Unfortunately, no. The I/O pins on that device cannot supply sufficient current. You could use multiple LilyTwinkles, as they aren't very expensive.
3

darrellg:

elunicotomas:
The thing is that I want 20 LED lights (aprox) per costume, wired in parallel, would this work?

Unfortunately, no. The I/O pins on that device cannot supply sufficient current. You could use multiple LilyTwinkles, as they aren't very expensive.

Hey! thanks for the quick response.

I’ll use 5 LilyTwinkles then, with 4 LEDs each, and I guess I’ll have to power each one of them (the LilyTwinkles) with one LilyPad Coin Cell Battery Holder - Switched - 20mm ( https://www.sparkfun.com/products/11285 ) and one Coin Cell Battery - 20mm (CR2032) ( https://www.sparkfun.com/products/338 ), right? or there is a way to power the 5 LilyTwinkles with one source? (a larger battery maybe?)

Thanks!

4

You could use a LiPower (https://www.sparkfun.com/products/11260) and a LiPo cell. Those are good for up to 150mA, so you’d probably need two. It would cost more, but LiPo cells are rechargeable so long term costs would be lower.