Picaxe 28 and servo question.
October 12, 2008
Hi all :)
Im just getting started in robotics and just joined this forum. I got inspired by the great "start here" project you have here. I am starting with a similar project for my first robot, but I would like to make a few changes. Instead of using motors to drive the robot I plan on using servos modded for continuos rotation. The robot will have 4 servos. 2 for moving around, 1 for panning the head and the last one for either operating some sort of manipulator or panning the head up and down.
I have some questions though, which I hope you can help me with:
1) If I use 4 servos with the picaxe is it absolutely required that I run them of a different power supply? I would like to keep the size and weight down so Im reluctant to add an additional power supply.
2) How do I connect the servos to the picaxe starter board? Is it safe to connect all 4 through just the 330 ohm resistors like the head panning one on the starter robot is connected or is that overloading the board? Do I need to have the L293D Motor Driver or the darlington on the board at all if im just using the servos and no motors?