The Raspberry Pi Pico is a low-cost, high-performance microcontroller board with versatile digital interfaces. It features the RP2040, Raspberry Pi's first microcontroller designed in-house. The Pico requires minimal external circuitry to support the RP2040 chip, and it utilizes an on-board buck-boost SMPS to generate the necessary 3.3 volts from a wide range of input voltages.

Specifications:

Builds upon the cost-for-performance metrics of the Pico and adds WiFi capability.
Features Infineon CYW43439 wireless chip, supporting IEEE 802.11 b/g/n wireless LAN and Bluetooth® 5.2.
Supports Bluetooth® Classic and Bluetooth® Low Energy (BLE) functionality.
Configurable to enable Bluetooth® Classic and BLE individually or simultaneously.
RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
Dual-core ARM Cortex M0 processor, flexible clock running up to 133 MHz
264kB of SRAM, and 2MB of on-board Flash memory
Infineon CYW43439 Based Wireless Module
Castellated module allows soldering direct to carrier boards
USB 1.1 Host and Device support
Low-power sleep and dormant modes
Drag & drop programming using mass storage over USB
26 multi-function GPIO pins
2× SPI, 2× I2C, 2× UART, 3× 12-bit ADC, 16× controllable PWM channels
Accurate clock and timer on-chip
Temperature sensor
Accelerated floating point libraries on-chip
8 × Programmable IO (PIO) state machines for custom peripheral support