Emona HELEx Green Engineering NI ELVIS Electronics Device—The Emona HELEx Green Engineering Board is an add-on application board for NI Engineering Laboratory Virtual Instrumentation Suite (NI ELVIS) II and III that also features integration with LabVIEW. Emona HELEx hardware is designed for teaching renewable energy concepts in electrical and computer engineering curricula. The Emona HELEx Green Engineering Board helps educators teach the fundamentals of solar cells, electrolysis, and hydrogen fuel cells. The add-on includes two solar cells, an electrolyzer, a lux meter, a fully programmable load of up to 256 steps, and four V/I meters.