Experiment with electronic fingerprint recognition and mechanical spinner toys based on surface-mount microcontrollers and POV LED circuits. Configure and program the Arduino Nano microcontroller. Interface fingerprint sensor modules to microcontrollers. Integrate fingerprint sensors into embedded systems. Practice surface-mount soldering techniques. Assemble an acrylic LED fidget spinner project. Configure and program the Digispark microcontroller USB module. Experiment with USB keystroke injection payloads.