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Getting started with Arduino

Arduino board definition​

To program your NULA Max RP2350, use the official Raspberry Pi core for Arduino maintained by Earle Philhower.
This package already includes the Soldered Electronics NULA RP2350 as a defined board variant, so you can select it directly from the Arduino board list after installation.

RP2350 Arduino core

Official Arduino core for Raspberry Pi RP2040 and RP2350 chips, including the Soldered Electronics NULA RP2350 board definition.
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New to Arduino?
If this is your first time setting up Arduino, follow our beginner’s guide for installation, connecting your board, and uploading your first sketch:

Getting started with Arduino

Step-by-step guide to installing Arduino and uploading your first program.

Installing the RP2040/RP2350 board package​

You can install the Raspberry Pi RP2040/RP2350 boards package directly from the Arduino Boards Manager:

  1. Open Arduino IDE
  2. Go to Tools → Board → Boards Manager
  3. In the search bar, type rp2350 or Earle
  4. Find Raspberry Pi Pico/RP2040/RP2350 Boards by Earle Philhower and click Install

Alternatively, you can install it manually by adding the package URL:

https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json

Then go to File → Preferences → Additional Boards Manager URLs, paste the link above, and reopen the Boards Manager.

Once installed, select your board from the menu:
Tools → Board → Soldered Electronics NULA RP2350

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If the Soldered Electronics NULA RP2350 does not appear in the list, you can alternatively select:
Tools → Board → Generic RP2350
Both options are compatible for uploading and testing basic sketches.

Example sketch​

Once your board is selected and connected via USB-C, you can upload this simple test sketch to verify communication:

void setup() {
  Serial.begin(115200);
  Serial.println("Hello from NULA Max RP2350!");
}

void loop() {
  delay(1000);
  Serial.println("Running...");
}
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If the upload fails, make sure the correct board and port are selected in Tools → Port. The NULA Max RP2350 uses native USB and does not require external drivers on most systems. If necessary, enter BOOTSEL mode by holding the FLASH button while connecting the USB-C cable, then release it once detected.