For the past two decades Graves Electronics LLC has provided design services for controls systems and instruments based on embedded microcontrollers. They have manufactured devices for their clients and provided support for the product over its life cycle. Recently they have developed their 81 Controller Board with I/O , relay and sensor modules for machine builders and companies trying to upgrade older systems with obsolete clunky control systems. This allows engineers to skip the demo board phase of a new project or product and integrate the board.