De la familia de los raspberry pequeño muy estable y super potente, se puede programar ide arduino, ide micropython, etc.
53580580 habana 10 usd 2cm x 1,5 cm

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
USB-C connector, keeps it up to date, easier to use
Castellated module allows soldering direct to carrier boards
USB 1.1 with device and host support
Low-power sleep and dormant modes
Drag-and-drop programming using mass storage over USB
29 × multi-function GPIO pins (20× via edge pinout, others via solder points)
2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC, 16 × controllable PWM channels
Accurate clock and timer on-chip
Temperature sensor
Accelerated floating-point libraries on-chip