Ultrasonic Collision Detection

+ How To Add This Control To Your Project (Click to Expand)
  1. Load the most recent release of ARC.
  2. Press the Project tab from the top menu bar in ARC.
  3. Press Add Control from the button ribbon bar in ARC.
  4. Choose the Ultrasonic Distance category tab.
  5. Press the Ultrasonic Collision Detection icon to add the control to your project.
If an HC-SR04 or Ultrasonic Distance Sensor is connected to the EZ-B, this control will Stop a movement panel if an object is detected within the specified range. This does not steer or avoid obstacles; it merely stops when detected. For object avoidance and steering use the Radar control.

It's worth noting that the distance displayed is not a unit of CM or Inches. The distance value is an arbitrary number that is related to the type of sensor, voltage, detected material, and temperature. If a specific distance is required, use a tape measure to identify the distance value.

The Synthiam Ultrasonic Distance Sensor comes in 2 versions. The first version, sold until February 10, 2017 uses 4 wires and an inline voltage regulator. The second version, available after February 10, 2017 uses 3 wires with a built-in voltage regulator in the plastic shell. The second version is updated and requires only a single plug to the EZ-B v4. We cover the installation of both sensor versions below...

Version 2

This is the 3 wire version #2 (most recent) of the Synthiam Ultrasonic Distance Sensor. This version uses only 3 wires contained within a single connector. You may connect this version to any of the EZ-B v4 digital ports (D0-D23). In ARC. the values for both Ping and Echo can be selected for the same port.


Version 1

This is the 4 wire version (older) of the Synthiam Ultrasonic Distance Sensor. This version has an inline voltage regulator and 4 separate wires. This version is a little more complex than the recent Version 2, due to separate wires and the inline voltage regulator.

ultrasonic distance sensor pin out

  • Ground = Black wire from regulator PCB to D21 black pin
  • Power = Red wire from regulator PCB to D21 red pin
  • Trigger = white wire to D21 White pin
  • Echo = green wire to D22 White pin

Ultrasonic sensor connected to ez-b