Ideas for areas to explore

  • Finding something fun to measure!
  • Seeing if your pet can hear the sensor, some animals can hear ultrasound.
  • Checking the maximum range for different objects and the behaviour of the sensor for no reflection ("infinity").
  • Checking and explaining the behaviour for very close objects.
  • Adding calibration offsets and coefficients to the program based on testing with one or more sensors.
  • Determining if sensors can be confused by other sensors operating in the same space.
  • Measuring the cone angle for the sensor and exploring physical techniques for reducing this.
  • Testing if fast movement affects sensor's ability to measure distance.
  • Exploring techniques for enhancing accuracy for stationary objects.
  • Checking the behaviour of the standard HC-SR04 at 3.3V.
  • Testing the 3.3V tolerant HC-SR04 variants. These may be red and labelled as "1652".
  • Explore other similar sensors like the (single transducer) Maxbotix range and ones that use different techniques:
    • SHARP sensors with infrared arrays,
    • STMicroelectronics Time of Flight (ToF) sensors.

Further Reading

Angled shot of an ultrasonic rangefinder.
LV-EZ1 Maxbotix Ultrasonic Rangefinder provides very short to long-range detection and ranging, in an incredibly small package. It can detect objects from 0-inches to 254-inches...
In Stock
Angled shot of a IR distance sensor with cable.
This SHARP distance sensor bounces IR off objects to determine how far away they are. It returns an analog voltage that can be used to determine how close the nearest object is. Comes...
In Stock
Video of a white hand hovering over a Adafruit VL53L0X Time of Flight Distance Sensor that's connected to a white breadboard reading the range of motion of the white hand.
The VL53L0X is a Time of Flight distance sensor like no other you've used! The sensor contains a very tiny invisible laser source, and a...
In Stock

This guide was first published on Sep 17, 2018. It was last updated on Sep 17, 2018.

This page (Going Further) was last updated on Sep 16, 2018.

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