Today there was a talk hosted by the IEEE Madison and SE Michigan CS and YP groups which provided an overview of the Raspberry Pi Pico Hardware and Software.
From the vendor: “The Raspberry Pi Pico series is a range of tiny, fast, and versatile boards built using RP2040, the flagship microcontroller chip designed by Raspberry Pi in the UK”.
From the vendor: “Designed by Raspberry Pi, RP2040 features a dual-core Arm Cortex-M0+ processor with 264kB internal RAM and support for up to 16MB of off-chip flash. A wide range of flexible I/O options includes I2C, SPI, and – uniquely – Programmable I/O (PIO).”
The Pico boards are available for as low as $4.00
The presentation material, reference links, and some programming material can be found here.