1. FabLab in the Center for Emerging Learning Technologies (CELT) and Renewable energy postgraduate programme, Faculty of Engineering, The British University in Egypt (BUE), El-Sherouk 11837, Egypt
2. London Centre for Energy Engineering, Division of Electrical and Electronic Engineering, School of Engineering, London South Bank University, London, SE1 0AA, UK
3. Centre for Efficiency and Performance Engineering (CEPE), Department of Engineering & Technology, School of Computing and Engineering, University of Huddersfield, Huddersfield HD1 3DH, UK