Z-Wave distance sensor with Z-Uno and HC-SR04

Make a Z-Wave distance sensor with HC-SR04 Ultrasonic Distance Sensor (or Range Finder) and a Z-Wave.Me Z-Uno development board.

Make a Z-Wave distance sensor with HC-SR04 Ultrasonic Distance Sensor (or Range Finder) and a Z-Wave.Me Z-Uno board.

Distance value is read from sensor and reported periodically to channel Multilevel Sensor. 

Two resistors are used to shift voltage from 5 V to 3 V. Z-Uno can survive 5 V input too, but it is not recommended. 
Note that HC-SR04 is very sensItive to power supply. If power supply is not enough (to low current), HC-SR04 will return shorter distance.

 

You will need:

  • Z-Uno board
  • Breadboard
  • HC-SR04 Ultrasonic Distance Sensor (like this or this)
  • 4 wires
  • 1 resistor 1 kΩ
  • 1 resistor 2.2 kΩ