The network embedded control lab, neclab, is a software environment designed to allow easy deployment of networked embedded control systems, in particular wireless networked embedded control systems (wnecs). A wnecs is a collection of interconnected plant sensors, digital controllers, and plant actuators which communicate with each other over wireless channels. In this paper neclab is introduced and explained using a simple ball and beam control application. We focus on wnecs which use the MICA2 Motes.