LimeSDR Mini

by Lime Microsystems

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

View all updates Sep 20, 2017

Thanks, Common Questions, and New External Clock Synchronisation

We just added the highlighted U.FL connector for connecting an external clock.

Firstly, we’d just like to say how thrilled we are at the interest shown in LimeSDR Mini, with all 500 of the early bird boards pledged within just 24 hours. One week in, we’re now over 85% towards the goal and on-track to meeting our target very soon at the current rate of pledges.

We have received some enquiries as to why prototype boards have 4x RF connectors, whereas the final boards will have just 2x. Well, by popular request we changed to using SMA connectors as these are more rugged, with cables and accessories for them also being more readily available. However, the connectors are larger and take up more space, so the design was also updated with additional RF switching, enabling us to switch a single port between low and high bands.

A number of you also asked whether it would be possible to add support for using an external clock source, enabling systems to be assembled with multiple boards synchronised to a common clock, or perhaps to just use an external high accuracy clock source, such as GPSDO or atomic clock. Well, we’re pleased to say that in the last week, despite all odds, our engineering team has managed to squeeze in a U.FL connector on the underside of the board for just this very purpose!

A few people have also asked whether the 2nd transmit and receive channels of the LMS7002M FPRF IC could be connected to additional RF connectors, turning it into a 2x2 MIMO platform. This would mean making the board and power supply circuitry bigger, and designing in additional RF matching networks, etc. And of course the LimeSDR Mini is highly cost optimised, with a smaller FPGA and different USB 3.0 IC also, preventing us to make such substantial changes.

The team are currently busy working on a number of exciting demos and we hope to be able to share these with you very soon, along with the complete hardware design database.

Stay tuned for future updates and once again, thank you for your excitement and support!

Jessica and the LimeSDR Mini Team

$2,227,760 raised

of $100,000 goal

2,227% Funded! Order Below

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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