questions on Duemilanove, can somebody please help

Forum 2005-2010 (read only) General Frequently-Asked Questions
1

  1. I am planning to use 4 servos and 2 infra red sensors in my project.

  2. I also need to use 2 power sources. one 6v battery pack and another 9v battery pack.

I am wondering if Duemilanove can support such design? or should I opt the Arduino Mega ? Thanks !

2

The duemilanove is just fine for these plans.

There is a library which your program can use to support several servos at once. There are plenty of I/O pins for sensors and servos.

I'm not sure why you want to support 6V and 9V in the same circuit, but it's possible to do. You will have to do a little work with extra transistors to support driving the higher voltage devices via lower-voltage logic. Typically, you could just put 9V to the Duemilanove's voltage regulator and get 5V for the lower logic and keep using the 9V for the motors if desired.

3
  1. I also need to use 2 power sources. one 6v battery pack and another 9v battery pack.

I'm puzzled too, why do you need to use 2 power sources?
Both at the same time, or either one?

GB-)

4

Thanks for the reply. sounds perfect !! will buy Duemilanove !!

Thanks!!