Pololu - Introduction to servos

Hobby servos are small, modular actuators developed by the radio control (RC) hobby industry for remote manipulation of everything from miniature boat rudders and car steering linkages to model airplane flaps and toy parachutist release mechanisms. The RC market is large and competitive, which has led to a proliferation of servos that have been optimized for characteristics including size, speed, torque, and price. This modularity, variety, ubiquity and cost-effectiveness of servos make them attractive generic actuators for small robots and other electromechanical systems.

Pololu - RC Servos

Power HD Digital Servo 8312TG - Robot Gear Australia

Pololu - FEETECH FS90 Micro Servo

Pololu - GWS NARO+ F HP BB Micro Servo

Pololu Micro Maestro USB 6-channel servo driver* Botland - Robotic

Pololu - RC Servos

Pololu - FEETECH Mini Servo FT1117M

Animation for Animatronics Part 1: Intro to Pololu

Servo control - Wikipedia