In this paper, a device control system using voice recognition developed for an embedded platform is introduced. The system is able to recognize voice commands obtained via a microphone, then realizes the control tasks following these commands. Two applications are taken into experiment are a six-legged spider-like robot, and a fan. The whole system including voice capturing, voice recognition, and device control modules are developed on a single Beagleboard C4 embedded platform, which is limited in size, resources as well as computing power.