This article describes a smart electronic counter that counts the number of pressure-cooker whistles and the duration of cooking time. It will trigger a buzzer alarm when the preset whistles count or preset amount of cooking time is reached.
This design can also be used in factories that have boilers with pressure release valves to automatically turn them off when hearing the sound of the boiling point. Or it can be used in steam engines to automatically cut off the power when a sound is made at the ship’s outlet valve.
The block diagram of the project is shown in Fig. 1. The components used in the project are listed under the Bill of Material table.
Download the source code
This project will be published in a few weeks. If you want to access it now, check out Electronics For You’s December 2022 Issue–print or ezine edition.