Micro Radioberry

[pa3gsb]

Hi Guys,

I have a question to the group

Having the capability in the gateware of controlling the radio with

a pio interface using a raspberry pi 5 how about connecting the radioberry to a raspberry pico 2350?

Does anyone already tried this?

Using the pico for loading the gateware and using the pio for the streams and spi for controlling.

This will make i think a nice setup.

Please let us know if someone did already this experiment?

73 Johan

PA3GSB

[Ricardo Suarez]

I did some testing that approach, my idea was to use an RP2040 to emulate a Juice mixer, but then I abandoned it.

Now I'm testing an RP2040 generating the quadrature signal for a Taylor mixer, capturing the I/Q with the ADCs, and sending everything via USB to a Visual C++ (windows) program that emulates the HPSDR V1 protocol, ultimately using Thetis as the front end. 

I already have a large part of it working.

Rick LU9DA

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[ciphernaut]

interesting, I played with pico pi rx last year.  neat little project.

What sort of channel bandwidth do you get from your setup?

73, Sage / vk4sge

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[pa3gsb]

Rick,

Why did you stop with the idea; was there a paricular reason to stop the development?

I was thinking of a basic board including an ethernet connection in the formfactor of a rpi; with a connector to a aux board for a standalone operation mode.

Johan

PA3GSB

Op donderdag 9 april 2026 om 20:06:09 UTC+2 schreef elu...@gmail.com:

[Ricardo Suarez]

Hello, Johan

no, no particular reason, too many projects at same time, and my IQ not allow more than one at time :D :D :D

Maybe you can try not ethernet, but only the stream under RP2040's USB serial port and a hpsdr emulator under linux or windows....

Regards

Rick LU9DA

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[El Calvo]

Johan, 

For another project I bought a waveshare 2350 pi zero. Is has the pinout similar to the 40 pin raspberry layout. Might be a good option to try.

It also have a pio usb and sdcard slot.

Juan WP3DN

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[pa3gsb]

Juan,

Very nice; thanks for sharing. I have ordered one.

73 Johan

PA3GSB

Op dinsdag 14 april 2026 om 03:55:55 UTC+2 schreef 3vol...@gmail.com: