I'm really confused. I'm currently building a autonomous mobile robot for a class project. I'm using two servo motors and the Basic Stamp II. I already have it moving and it goes forward, reverse, right and left. I took it to class and my professor said it was okay, but he didn't
understand how it works without an h-bridge(he doesn't really know
a lot about the Basic Stamp). I explained how you send the 1ms or
2ms pulse, and the pulsout command. He asked me if it had some
kind of internal transistors on the outputs to drive it, and I told him I didn't know I would have to check the schematic. Originally when I started I thought I needed one, but after posting the question I found out I didn't. I have seen different designs online that use servo motors and the Basic Stamp II that do use an h-bridge and I'm not sure what the advantage is over not using one. I'm in the process of adding a deck to add more electronics. I'm not sure it this will cause a problems because my servos draw about half an amp.
Question 1# What is the advantage of using a h-bridge using servos and the Basic Stamp II.
Question 2# If I add more weight and I'm using no h-bridge will this cause a problem