This unit of competency defines the skills and knowledge required to evaluate automated devices, machines and processes controlled by microprocessors. It includes integration of input devices/sensors, output devices/actuators, controllers, interfacing and signal conditioning, human-machine interfaces (HMIs), networking options, data and communications protocols software, programming of microcontrollers and automation safety. Analogue interfacing is included but the unit does covert proportional integral derivative (PID) interfacing.Microcontrollers are typically an integrated circuit consisting of a central processing unit (CPU) combined with support functions. These functions include a crystal oscillator, timers, watchdog timer, serial and optional analog input/output (I/O). There is a limited amount of read/write memory on the chip along with program memory in the form of reprogrammable flash or ‘one-time programmable’ ROM.The unit applies to the evaluation of microcontrollers and their use in automated devices, machines and engineering processes. It is suitable for people working as automation, mechatronics or maintenance technicians or for those pursuing qualifications or careers in those disciplines.No licensing, legislative or certification requirements apply to this unit at the time of publication.