Ok I think liFePO4 battery is a good start.My problem is that I tought I could drop the 6.4V (2*3.2 battery) to 5V with a LM7805 ^^ but I've read the data sheet and I've seen that it can output a maximum of 1A
You don't have to use a step down if you wire the strips in series to use 10 volts. 3x26430 batteries would give 9.6 volts. Also by wiring the strips in series your amperage won't double.
No, just no.You cannot hook two strips in series, because:1) They are not constant resistance - one strip will get fried while the other will get too low a voltage when they are not displaying the same content.2) You will offset the data-connection of the second strip by +5V - this is absolutely a no-go.// Per.
That's funny, I thought these strips were designed to be connected in daisy chains.Well, I searched these other forums and here's what they show.http://electronics.stackexchange.com/questions/122724/12v-led-strips-in-series-with-a-24v-power-supplyhttp://www.candlepowerforums.com/vb/showthread.php?401857-Wiring-LED-strips-in-serieshttp://www.theuncommonlaw.ca/blog/diy-how-to-wire-led-strip-lightshttp://www.rcgroups.com/forums/showthread.php?t=1649856
Why on earth is it that you are so damn ignorant? Why not reading what other people is posting.OP is using WS2812 LED's. They are intelligent, powered by 5V, has a DATA in, and DATA-out.http://3.bp.blogspot.com/-J33RF-HsmWk/UqHEvbOy1kI/AAAAAAAAAO4/3-XGi2HcA80/s1600/Esquema-Arbol-de-Navidad-Shield-Arduino.jpg// Per.
Here they says it is possible to daisy chain WS2812 LED'shttp://mjhdesigns.com/?p=312besides, I had asked OP whether he could change his choice in led strips since his only use with thestrip is to light up his saber in blue.