Application Notes

AN-10 API Interface – simple API interface details for configuring and controlling the OPS241, OPS242, and OPS243 as well as system level products OPS7242 and OPS7243 (video).

AN-11 Cosine Error – explains the cosine error related to the reported speed (video).

AN-12 Android Phone Radar Gun – how to enable an Android phone radar speed gun to read data from an OPS241-A, OPS242-A or OPS243-A.  The app is available from the Google Playstore. (video)

AN-13 Code Update – describes procedures for updating OPS241, OPS242, and OPS243 with new code versions (video).

AN-14 UART Interface and Arduino Support – new UART interface described along with how to interface OPS241 to Arduino.

AN-15 Simple Motion Detection Interrupt – new interrupt pin triggers when motion detection detected meeting speed, direction, and magnitude filter settings.

AN-17 Simple Counting Algorithm – explains new simple algorithm to count objects over time in the radar sensor field of view.

AN-18 Low Power Battery Operation – details how to use Hibernate mode, what levels of power consumption can be expected, and how to calculate overall system power.

AN-19 Traffic Monitor Mounting Guidelines – provides guidance on mounting OPS24x radar sensors for traffic monitoring application.


Software Support

Github Projects – Download projects to connect OPS241, OPS242, and OPS243 to Arduino, Raspberry Pi, display data on an LCD, or connect to an Android phone.

USB Driver – Typically the USB driver in Windows, Mac, and Linux computers will automatically connect to the OPS241 and OPS242 radar sensors.  If they do not, this driver may be installed on your computer to make a connection.

ROS Package – Details for the ROS (Robot Operating System) package and support for Kinetic, Lunar, and Melodic releases.


Firmware Releases

Contact Customer Service to request the latest code file.


DeviceLatest Code VersionKey Update
OPS241-A/ OPS242-Av1.4.0Serial number, mnfr. date, custom label, peak speed averaging and FFT zero padding added for improved resolution.
OPS243-Av1.0.8Added output reports for persistent memory and general settings
OPS241-Bv1.0.5Automatic calibration enabled
OPS243-Cv1.1.5Updates for RS-232 support and more flexible configuration of FMCW chirp.