Tech EXPO 2017 CONTENTS EXHIBIT NO. 4 15 Turning Heads: Automation on a Budget using Arduino ...................................... 42 By Thomas Fagerholm and Andrew Armas 16 DMX Controlled Projector Dowser ............................................................................ 45 By Chris Rybitski 17 Improved Wagon Brake ............................................................................................... 48 By Shannon Perry and Tim Francis United States Institute for Theatre Technology, Inc.