This circuit, which can be used as a shield or in other applications, can be found elsewhere on this website. The supply must be made with 5 V.
This alarm, found in a 2002 documentation, uses several sensors and has a 12 V supply, not...
This circuit was found in a 90's EDN. The circuit provides two 15 V outputs and one 5 V output...
This circuit generates 5 different tones selectable by switch S1. Separate pressure switches can...