LimeSDR Mini

by Lime Microsystems

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

View all updates Oct 25, 2017

Raspberry Pi 3 and Scratch Demo

We are absolutely committed to lowering the barrier to entry for software-defined radio and one way we’re seeking to achieve this is via low cost platforms such as the LimeSDR Mini. In this latest demo we show it being used with the incredibly popular Raspberry Pi 3. While this won’t run an LTE base station, it is perfectly capable of supporting a great many narrowband applications and together they provide an eminently affordable platform for SDR experimentation and education.

Speaking of education, we’ve also been working on creating SDR extensions for the Scratch visual programming language, that will hopefully provide a familiar and friendly environment for learners to get their first experience of constructing simple software radios. In the video, I quickly demonstrate connecting a LimeSDR Mini signal source to a spectrum display, but work is also under way to develop the blocks required to enable transmitting and receiving text messages.

Please note that ScratchRadio is still very much a work-in-progress. The sort of additional features that we have in mind include configuration for the spectrum display, along with the ability to constrain transmit applications in terms of frequency (e.g., to licence-exempt bands) and duty cycle when used in learning environments.

More Raspberry Pi demos to come. Here’s to inspiring the next generation of wireless engineers!

Andrew and the LimeSDR Mini Team

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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.


Grove Starter Kit for LimeSDR Mini

A collaboration with Seeed Studio, this 21-piece kit comes with a LimeSDR MIni, two antennas optimized for the 433/868/915 MHz unlicensed bands, 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. Raspberry Pi, power supply, and microSD card not included.


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.


Two Antennas

A pair of omni-directional antennas with SMA connectors, optimized for frequency ranges of 800-960 MHz, 1710-2170 MHz, and 2400-2700 MHz.


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

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