When using 2-3 of the same LEDs on one driver (700ma driver),
is parallel the best way?
In series, do they get less bright like an incandescent bulb would?
(I have 5v source to a driver)
Just keep in mind, in parallel, if one or more of the LEDs gets
disconnected, the constant-current driver will pump the same
current through the remaining LED(s), which could overdrive and
possibly damage them. Not good for expensive devices. Since
LEDs don't seem to often fail open, this would be mostly likely
due to a bad solder connection etc.
With series connection, loss of connection would kill the whole
series string, so if this is not tolerable (such as for safety reasons)
parallel can be better.
Dave