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Ultrasonic Sensor

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Dario edited this page Dec 23, 2018 · 13 revisions

HC-SR04 The money box monitors available space in the coin container via an ultrasonic sensor.

Note: the effectiveness of this choice is yet to be proved.

HC-SR04 (image retrieved from Internet)

Connections

Arduino Pin Function
D7 ultrasonic sensor (TRIG)
D8 ultrasonic sensor (ECHO)

Library

A (very) basic library has been developed to abstract ultrasonic sensor behaviour.

(next Other Devices)

License Information: The project hardware and software are released under CC0 1.0 Universal.

  1. Home
  2. Block Diagram
  3. Power Supply: 230V AC to 12V DC
  4. Power Supply: 12V DC to 5V DC
  5. Arduino UNO (rev. 1) & Screw Terminal Adapter
  6. Coin Acceptor
  7. Solenoid Lock & Driver
  8. RFID Reader & Voltage Level Translator
  9. LCD
  10. Ultrasonic Sensor
  11. Other Devices
  12. Conclusion
  13. Appendix A: Parts Used
  14. Appendix B: State Machine
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