Update 2/11/2021 05:22 ET:
Wren has been in contact with us and advised that the 1080p60 demo was via VGA, and that DVI goes up to 720p30 with a 372 MHz system clock. The article has been updated to show this.
Raspberry Pi engineer Luke Wren has been busy with his Raspberry Pi Pico and his latest project is called Pico DVI Sock, which is a board that provides a full-size HDMI port for the Raspberry Pi Pico.
Did some soldering yesterday pic.twitter.com/s7iQ3tBb3gFebruary 9, 2021
The Pico DVI Sock is an add-on that connects to the last five GPIO pins on each side of the Raspberry Pi Pico using the castellated edges of the Pico to connect the two boards together with solder. Despite being soldered together, the remaining GPIO pins of the Pico can still be used for breadboarding.
The full-size HDMI port of the Pico DVI Sock is used to output DVI-D video, which could be useful given that the Raspberry Pi Pico is capable of outputting video at 720p 30fps, and 1080p black and white video at 60fps via VGA.
Wren has provided all of the design files and a bill of materials that can be used to fabricate your own Pico DVI Sock.