Key Fob Decoder

[DameOfDataflow]

Overview

This example decodes an on-off-keying (OOK) key fob signal uing LabVIEW Communications System Design Suite and the NI USRP™ tranceiver.

Description

For additional information, refer to https://forums.ni.com/t5/Example-Program-Drafts/Record-and-Playback-Demo-With-NI-USRP/ta-p/4099379

Steps to Implement or Execute Code:

1.  Open Acquire.gvi and navigate to the front panel

2.  Populate the front panel controls as follows:

• Enter the IP address or Device Name of your USRP device (typically 192.168.10.2)
• Set the Carrier Frequency, IQ Rate, and Gain for the signal you'd like to receive (typically 315 MHz)
• Ensure the proper antenna is selected

3.  Run Acquire.gvi and press buttons on your key fob. An example of a decoded button press is shown in Figure 1:

Figure 1: Front panel of Acquire.gvi showing a decoded key fob button press

Requirements

Software

• LabVIEW Communications System Design Software 1.0+

Hardware

• An NI USRP Transceiver that supports your desired frequncy range
• An antenna that supports your desired frequency range
• A 315 MHz, five button key fob