This timer for long time intervals is from the 1990 Motorola Linear Databook. The setting applies to other operational ones and component values are given below the diagram.
This ultra-low consumption circuit was originally designed to be powered by a solar panel or small...
Texas Instruments TMP116 and TMP116N digital temperature sensors can be obtained from Mouser...
This small transmitter can act as a wireless microphone operating in the medium wave range,...