I would like to attach some WSN to devices to collect info about power usage.. but I haven't worked with WSN.. so how should I start and how much time will it take me to actually start working in hardware with such sensors ... I hope it doesn't take too long cause my project has other parts as well
Check out MeshScape products from www.millennialnet.com. They have development kits that makes it extremely easy to develop WSN applications. They also have power usage sensors available called Wi-LEM.