Stephen Hawes, founder of Opulo and creator of the Lumen pick and place machine, shares insights from his journey in open-source hardware. He discusses the challenges faced in developing the Lumen, its unique dual-nozzle system, and how it compares to other assembly methods. Topics include the calibration process of machines using OpenPNP, innovative uses of vacuum sensors, and the importance of community engagement in open-source projects. Stephen also reflects on the evolution of PCB manufacturing and encourages exploring new DIY innovations.