This Arduino based Smart blind stick will have three Ultrasonic sensors connected in left, right, and center to sense distance from any obstacle, a JQ6500 Voice Sound Module to give warning signal, ...

The diagram below shows the SFX Sound Expander circuit. It was designed to interface to the Commodore 64 Cartridge slot. Connections are relatively straight forward, GNDs have to be connected up, the ...

Dog Barking Security Alarm Circuit Diagram The schematic for the Dog Barking Alarm using Arduino is given below. The Amplifier IC is used to amplify the Output from Dog Barking Sound Module. The Alarm ...