Help deciding what is better for a project I am doing with a 1900 LEDs. 1 big circuit or lots of smaller ones?
I have 1900 LEDs and 1900 CR2032 3 V batteries left after some recent throwie / stickie / fun but I am now thinking about doing something a little more with them.
Thinking of doing some art installations with LEDs as a feature. Anyone know of the best way to wire up a simple circuit for these 1900 LEDS. Wanting them to last about 3 - 4 days.
I know a throwie will last about 4 days, sometimes more with these batteries and LEDs.
Is it a simple case of having to solder 1900 circuits?
or go for something like 190 circuits with 10 LEDs and a battery pack of 10 3v batteries. From my understanding that will blow the LEDs if the V differential is greater than about 8Vs.
This should be ok when setting the LEDs in series though?
10 X 3v batteries giving 30Vs
30v - 28.3v = 1.7v
(where the 28.3 is made up of Yellow X 2, Green X3, White X 2, Blue X 3)
0.2 amps needed, should be supplied by the 10 batteries easily and should last over 4 days.
Baring this in mind is it worth my while picking up some resistors for the circuits? Last did serious electronics and physics about 11 years ago but I guess im bright enough and have the basics.?
200 Red needing about 1.7 volts
500 Yellow needing about 2.1 volts
500 Green needing about 2.2 volts
500 White needing about 3.5 volts ??
200 Blue needing about 3.5 volts
I would like all the LEDs to turn off and on together preferably when it gets darker to maximise the effect of the lighting. Going to use something like a LDR for that so I would prefer 1 larger circuit but I guess multiple circuits is also possible.
Any help, comments, corrections and belittling gladly welcomed.
Thanks very much,