LimeSDR Mini

by Lime Microsystems

An open, full-duplex, USB stick radio for femtocells and more.

View all updates Nov 10, 2017

LimeSDR Mini, UDOO x86, and gr-fosphor Demo

The UDOO x86 is a smart little single board computer that is packed with features. The Advanced Plus version used in this demo integrates a quad-core 2.4 GHz processor with 4 GB DDR3 RAM, 32 GB eMMC storage (with support for SATA, M.2, and microSD), Gigabit Ethernet, 3 x USB 3.0, HDMI, 2 x miniDP++, and an Arduino-compatible MCU with a bunch of GPIO.

What’s particularly interesting for our use case is that the UDOO x86 board also has Intel HD 400 graphics which are supported by the Intel OpenCL SDK, meaning that we can use it with the immensely cool fosphor block for GNU Radio to provide an RTSA-like (real-time spectrum analyser) display. Unfortunately, fosphor use is not possible with many SBCs since it requires OpenCL-capable hardware for accelerating DSP functions and OpenGL for graphics display.

In the video below, I run up the osmocom_fft application in fosphor mode and give a quick demo showing some 433 MHz remote and 2.4 GHz Wi-Fi signals being displayed. While limited signals were available to show due to the small antennas attached and the workshop being something of a Faraday cage, it’s easy to see how this hardware combination could be put to use in creating an incredibly useful lab tool at a very low cost, with no shortage of other potential uses also.

Andrew and the LimeSDR Mini Team

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of $100,000 goal

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Product Choices


LimeSDR Mini

The LimeSDR Mini is the perfect way to start experimenting with and building your own wireless networks, protocols, and testers.


LimeSDR Mini with Aluminum Case

This custom-made aluminum case comes with a LimeSDR Mini and two antennas. The case not only keeps your LimeSDR Mini safe, but it also helps reduce noise interference. Perfect to slip into your pocket for all your on-the-go wireless adventures.


Acrylic Case

Keep your LimeSDR Mini safe in this custom acrylic case.


Lime AC Mini Case

From the Lime AC Case project.

An aluminum case for LimeSDR Mini, including one fan.


Multi-band 4G/3G/2G Monopole Antenna

From the Crowd Supply Basics project.

A TG.09 4G/3G/2G cellular hinged SMA(M) mount monopole antenna.


Grove Starter Kit

A collaboration with Seeed Studio, this 21-piece kit comes with a GrovePi+, an acrylic base plate, a USB extension cable, and a wide variety of Grove sensors and actuators: Ultrasonic Ranger, Temp&Humi Sensor, Temperature Sensor, Rotary Angle Sensor, Button, Light Sensor v1.2, 3-Axis Digital Accelerometer (±1.5 g), Relay, Sound Sensor, LCD RGB Backlight, Buzzer, Red LED, LED Bar 2.0, Touch Sensor, and Piezo Vibration Sensor. Compatible with Scratch. NOTE: LimeSDR Mini, Raspberry Pi, power supply, and microSD card are NOT INCLUDED.


Lime Microsystems

Working toward the democratization of wireless communication through an open source ideology.

Ebrahim Bushehri

Jessica Gillingham

Andrew Back

Zack Tamosevicius

Richard Jonaitis

Josh Blum

Lexi Hatziharalambous

Karolis Kiela

Andy Chang

Ignas Skudrickas

Chris Holgate

Seeed Studio

Grove Starter Kit Partner

See Also

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