Maia SDR is an open-source FPGA-based SDR project focusing on the ADALM Pluto.

It currently provides a firmware image for the Pluto with the following functionality:

• Web-based interface that can be accessed from a smartphone, PC or other device.
• Real-time waterfall display supporting up to 61.44 Msps (limit given by the AD936x RFIC of the Pluto).
• IQ recording in SigMF format, at up to 61.44 Msps and with a 400 MiB maximum data size (limit given by the Pluto RAM size). Recordings can be downloaded to a smartphone or other device.

See maia-sdr.org for more details.

See the installation instructions.

Stable releases of firmware images for the ADALM Pluto and Pluto+ can be found in the plutosdr-fw repository. See also the installation instructions.

Development ADALM Pluto firmware images for each commit and pull request are built automatically with Github's actions system. To download the firmware image for the latest commit in the main branch (or for any other commit), click on the actions check, then go to the plutosdr-fw action details, click on the summary, and download the pluto-firmware artifact. This procedure is illustrated by the following screenshots.

For each pull request, a firmware image is also built. The bot adds a comment to the pull request with a link to the firmware when it is ready.

Support for Maia SDR is handled through Github issues and Github discussions.

The project is divided into the following components:

• maia-hdl. The FPGA design. It is written in Amaranth. It can be used to build the Vivado project and bitstream for Maia SDR or as a library in other projects.
• maia-httpd. The software application that runs on the Zynq ARM CPU. It is written in asynchronous Rust and spawns a web server.
• maia-kmod. A kernel module used to control some RAM buffers that are used to exchange data between the FPGA and CPU.
• maia-wasm. A web application that is the UI of Maia SDR. IT is written in Rust with WebAssembly and uses WebGL2 to render the waterfall.

maia-hdl is licensed under the MIT license. maia-httpd and maia-wasm are licensed under either of the Apache License, Version 2.0 or the MIT license at your option. maia-kmod is licensed under the GPL, version 2.