Raspberry Pi PICO W
"Based on the Raspberry Pi RP2040 chip design; Processor: Dual-core Arm Cortex-M0 @ 133MHz Memory: 264KB on-chip SRAM; 2MB on-board QSPI flash Interfaces: 26 GPIO pins, including 3 analog inputs; 2 × UART; 2 × SPI controller; 2 × I2C controller; 16 PWM channels?