Simple to build kit uses a programmable unijunction transistor (PUT) to flash a jumbo red LED. Makes a great first kit and is useful for all types of convention badges, posters, attention getters, hats, model railroads, model planes, etc. Operates from one 9V battery (not included). Size of board: 1.25” x 1”.
Complete with all parts, PC board and instructions. Skill Level 1.