$4.6MIL PRE-SEED ANNOUNCEMENT

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

ESP32 DevKit

Wi-Fi, Bluetooth, GPIO, ADC, PWM, I2C, SPI, UART

Default connected microcontroller board for wireless sensor, LED, and IoT-style builds.

1 board

Arduino Uno

5 V GPIO, ADC, PWM, I2C, SPI, UART, USB

Beginner-friendly Arduino board with the classic shield-header layout and 5 V ecosystem.

1 board

Raspberry Pi Pico

RP2040 GPIO, ADC, PWM, I2C, SPI, UART, USB

Low-cost 3.3 V RP2040 board for breadboard builds with lots of flexible GPIO.

1 board

Can I swap these?

Pick the board you have - we'll show what we know about swapping it.

Known swap options (1)

General board checks (5)
  • Pick the controller family first: ESP32 for Wi-Fi/Bluetooth projects, Arduino Uno for 5 V beginner shields and examples, or Raspberry Pi Pico for cheap RP2040 GPIO-heavy builds.
  • Check logic voltage before plugging in sensors, LED strips, relays, or modules. Do not feed 5 V signals into ESP32 or Pico GPIO.
  • Map every used signal, including power, ground, ADC, PWM, I2C, SPI, UART, interrupts, enable pins, and boot pins.
  • Confirm the physical ecosystem: Uno shield headers, Raspberry Pi HAT header, Feather format, Pico breadboard rows, or MKR shield fit.
  • Confirm the firmware path: board core, upload cable, bootloader mode, libraries, and any board-specific pin aliases used by the guide.

Parts in this group