Reply To: Single layer PCB design Forum › Get Help › Electronics › Single layer PCB design May 12, 2022 at 2:01 pm #1945 Quote Mohamed_Daqqa Thanks alot its worked i was think that the single layer is a sheild but its not and it does not contains inputs for opto sensor so i will design one depends on schematic as a sheild with single layer a new THOR will born soon !