How many LED's can the Arduino PRO mini run? Answered
I need to design a programmable flashing light source for small models. The Arduino PRO mini looks perfect, but how many white LED's can I run on an Arduino PRO mini 5v? Am I right in thinking that a 3.3v mini will not power them? I would like to use at least 3 LED's but 6 would be great.
It will be powered by either a 9v, or coin cell battery if I can use the 3.3v version. I assume I can only use the coin cell on the 3.3v version, but use a 9v battery for both versions as long as I connect to the RAW input is that right?