The purpose of the circuit is to give the user an indicator if their bandaid is secure. When a user wraps the bandaid around tightly, the light will turn on signifying to the user that the band-aid is secure. This design was intend for users that may have a hard time seeing and need a confirmation that the band-aid is indeed on. It also looks pretty when the light turns on.
The purpose of this circuit is to give the user an indicator of the water level in the cup. When the user is filling their teacup, if the liquid reaches a certain water level a light will turn on. This will alert the user that the water might overflow if they continue to pour their liquid of choice. The concept is pretty simple, this design was intended for users who may struggle with sight. Having an extra indicator would help prevent the user from spilling their favourite drinks.
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