> i'm new in building robots (only programming; LEGO Mindstorms) and now
> i wanna build my own basic circuit. how to do??
> where can i get information about the motorola controllers?
> or is anotherone better??
> and how do i solve the problem of all the small pins have to be
Don't try to solder surface mount parts by hand until you have lots of
soldering experience. You might want to start with wire wrap parts
and sockets. they are easy to fix, although harder to wire up the first
time. What I do is get pins and "vector boards" which have holes punched
in them every .1", then push the pins into the board and solder parts to
the pins. Then I can wire wrap the parts to chips.
You can get evaluation boards with just about any microcontroller you want,
or you can get development kits which include flash reprogrammable micros.
You can reprogram the microcontroller and keep trying it in your board
until things work. It takes a long time :-) Nothing works right the
first 20 tries or so, and figuring it out is the fun part.
What I like about wire wrap is that it's really easy to change the circuit
when you find you made a design error. You can add parts, move wires
around and check things again really quickly. You still need a soldering
iron, but you won't be burning up small parts :-)
Good luck and have lots of fun!
Patience, persistence, truth,