Cheap multi-channel Logic Analyser

[Fred Jan Kraan]

Hi All,

Since some time I am constructing and experimenting with a simple multi-channel logic analyser based on the Gusmanb design. This allows up to 120 channels based on some Raspberry Pi Pico boards and level converters. So far I only tested it with simple 8-bit computers, but it might also be usable for PDP-11 debugging.

Because the complete analyser is so small, it could be very close to the backplane and boards and need relatively short wires. The software is multi-platform and works very well on Linux. The trigger facilities are a bit simple. With the standard Pico 100MHz sample rate is possible, with a Pico 2, 400 MHz is advertised.

Attached an image of the enclosure with three boards (72 channels) and an integrated USB hub.

Could there be a reason it might not work for a Qbus PDP-11?

Greetings,
Fred Jan