Hackaday takes a close look at Raspberry Pi's new $4 microcontroller, the Pico

Pico is the new $4 Raspberry Pi microcontroller board. It looks amazing for the price. Hackaday posted a detailed description of it.

The microcontroller in question, the RP2040, is also Raspberry Pi's first foray into custom silicon, and it's got a dual-core Cortex M0+ with luxurious amounts of SRAM and some very interesting custom I/O peripheral hardware that will likely mean that you never have to bit-bang again.