Data logger, oscilloscope, signal generator and more!

DrDAQ is a versatile instrument that connects to the USB port of any PC. Using the supplied PicoScope software it can be used as an oscilloscope, spectrum analyzer and signal generator.

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Traffic noise


Trace from experiment 1

Graph showing how sound level varies with noise

This graph shows that there is a direct relationship between road traffic noise and time of day. The sound level is highest on Saturday 29th June.

This graph shows that there is a direct relationship between road traffic noise and time of day. The sound level is highest on Saturday 29th June.

Trace from experiment 2

Road traffic noise

This graph shows the sound level over a 2 minute period. The peaks on the graph are vehicles passing by.

Answers to questions

Experiment 1

  1. (Dependent on your location) In Pico’s experiment it is noisier on Saturday due to the increased number of people going shopping
  2. The noisiest times of the day are 9:00am and 5:00pm as people are travelling to and from work and school at these times. These times are known as the "rush hours"

Experiment 2

  1. In Pico’s experiment approximately 9 vehicles passed by in the 2 minutes the DrDAQ was recording. This is measured by counting the number of peaks shown on the graph above 70 dB. Each peak representing a vehicle passing by

Teachers’ notes

Safety notice: children must be well supervised and briefed on road safety if experimenting near roads. These experiments should preferably be done by suspending the DrDAQ unit out of a building window that faces a road.

Credits, comments and further info

This experiment was written by Pico Technology.


  • I have been using my 4224 PicoScope for years. I travel abroad so this has been ideal due to its physical size. Storage of waveforms on my Laptop is very easy allowing me to quickly email waveforms to my Colleagues.

  • Not many USB scopes works on Win & Mac & Linux too, so that proves me that guys from Pico really cares about us, customers. This made my decision much easier when I was looking to buy an USB scope.

    Raul Trifan
  • We have been using Picoscope 6404D for quite some time, and are amazed by its accuracy and powerful emulations while working with numerous signal evaluations.

    J Mohanty
  • PicoLog TC-08: This is a very nice unit that works consistently and reliably.

    Jeff Hulett
  • It is a great scope. I had a weird problem - it did not work on one of my PC’s. Customer service gave me first class service. If I could give 6 stars for customer service - I would do so.

    Niels Larsen
  • Perfect Partner for Development of Encoder controlled Stepper Motor Actuators. Since the included software is really stable, this type of device is a great tool for great tasks!

    Helmut Schoettner
  • A superb piece of equipment worth its weight in gold

    Nigel Clinch
  • So simple to use & beats any other I have ever used hands down.

    John D Samsing
  • Great functionality in a compact size. I really like moving the mouse pointer to a position and having the Time and Voltage display the values at that point. Calibration equipment is a breeze with that feature.

    Don Horein

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