Latest Software-Defined Radio Articles and Videos

Which wireless protocol should you use when designing a home automation device?

Which wireless protocol should you use when designing a home automation device?

Tutorial on designing a Bluetooth Low Energy (BLE) circuit with the ability to measure 9-axis motion, humidity, and temperature.

Tutorial on designing a Bluetooth Low Energy (BLE) circuit with the ability to measure 9-axis motion, humidity, and temperature.

The SubPos Ranger is a Kickstarter campaign to manufacture an open source Indoor Positioning System intended for hobbyist…

The SubPos Ranger is a Kickstarter campaign to manufacture an open source Indoor Positioning System intended for hobbyist robotics applications that need sub-meter positioning accuracy.

This article will give you the building blocks needed to create your own two-channel wireless remote controller.

This article will give you the building blocks needed to create your own two-channel wireless remote controller.

Nordic’s BLE chipset is now available in both QFN and WL-CSP packages— and that shows how wearable applications are…

Nordic’s BLE chipset is now available in both QFN and WL-CSP packages— and that shows how wearable applications are driving the Bluetooth Smart chip designs.

This two-part project will begin by showing you how to create a robot base from a used electric wheelchair. Part 1…

This two-part project will begin by showing you how to create a robot base from a used electric wheelchair. Part 1 creates a simple robot platform for use with remote control. Part 2 will develop a platform for use with and Arduino.

Learn how to build a system that can turn DC loads on and off using a mobile application. You'll also learn how to…

Learn how to build a system that can turn DC loads on and off using a mobile application. You'll also learn how to perform this task via immediate actions or via timers set in advance.

Combine the Si4844-A10 analog-tuned radio receiver with an Arduino to make a full-featured multiband radio.

Combine the Si4844-A10 analog-tuned radio receiver with an Arduino to make a full-featured multiband radio.

This article covers everything you need to know to generate pulse-width-modulated signals with Atmel’s SAM4S Xplained…

This article covers everything you need to know to generate pulse-width-modulated signals with Atmel’s SAM4S Xplained Pro development board.

If your microcontroller doesn’t have a digital-to-analog converter, you can make a passable replacement with nothing…

If your microcontroller doesn’t have a digital-to-analog converter, you can make a passable replacement with nothing more than a pulse-width-modulated signal and a low-pass filter.

In this week's teardown Tuesday we are going to take a look inside an RC car transmitter.

In this week's teardown Tuesday we are going to take a look inside an RC car transmitter.

See how people around the world are using Raspberry Pis to spread information freely.

See how people around the world are using Raspberry Pis to spread information freely.

An overview of Zentri's IoT and M2M Platform. Does it live up its predecessor?

An overview of Zentri's IoT and M2M Platform. Does it live up its predecessor?

Amateur radio operators ("hams") have long said, "If you want a bigger signal, put up more metal and put it up higher."…

Amateur radio operators ("hams") have long said, "If you want a bigger signal, put up more metal and put it up higher." Antennas for Wi-Fi are no exception.

Direct Digital Synthesis is used to generate precise analog waveforms that can quickly change frequencies. It's used in…

Direct Digital Synthesis is used to generate precise analog waveforms that can quickly change frequencies. It's used in test equipment, spread spectrum techniques and to enable frequency sweeps.

NXP demonstrated its Thread Platform at ARMTechCon last week. Based on the JN5179 wireless MCU, with Secure Element, NFC,…

NXP demonstrated its Thread Platform at ARMTechCon last week. Based on the JN5179 wireless MCU, with Secure Element, NFC, Thread encryption, its own dc/dc converter and featuring ARM's mbed OS, the Platform makes secure home automation application design a whole lot easier.

This handy introduction teaches you all about the RFM69HW transceiver module using two circuits running a wireless…

This handy introduction teaches you all about the RFM69HW transceiver module using two circuits running a wireless version of the "blinky" code.

Learn how to use a 433MHz RF module with an ATMega 328P-PU. In this article, we'll make a circuit with a DHT11 sensor and…

Learn how to use a 433MHz RF module with an ATMega 328P-PU. In this article, we'll make a circuit with a DHT11 sensor and a RF transmitter. We'll also make a receiving circuit with a 433MHz RF receiver and an LCD display.

Updating the firmware in an ESP8266 Wi-Fi module can be frustrating! Here's a procedure to reduce the pain.

Updating the firmware in an ESP8266 Wi-Fi module can be frustrating! Here's a procedure to reduce the pain.