Components and supplies
1
Battery Contact, PP3 (9V)
1
Horn Loudspeaker, Re-entrant
1
Power Relay, SPDT
1
Arduino UNO
1
60W PCIe 12V 5A Power Supply
1
9V battery (generic)
1
Ultrasonic Sensor - HC-SR04 (Generic)
Project description
Code
Github
Arduino code
Downloadable files
Schematics
Schematics

Schematics
Schematics

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