Report PC Control Board in Electronic Projects Design/Ideas Posted April 8, 2007 Really,we can't direct control relay with circuit picture above as printer port has abount 2-3 voltage ,we should be TTL driver connect too. you can do it such as link belowhttp://www.thaiio.com/Project/4input_4output_board_project.html
PC Control Board
in Electronic Projects Design/Ideas
Posted
Really,we can't direct control relay with circuit picture above as printer port has abount 2-3 voltage ,we should be TTL driver connect too. you can do it such as link below
http://www.thaiio.com/Project/4input_4output_board_project.html