How to Use Adafruit Feather RP2350: Examples, Pinouts, and Specs

The Adafruit Feather RP2040 is a compact development board featuring the RP2040 microcontroller, designed for IoT projects and prototyping. It comes with built-in USB, battery charging capabilities, and extensive GPIO options, making it a versatile choice for a wide range of applications.

• IoT Projects: Ideal for creating connected devices and smart home applications.
• Prototyping: Suitable for rapid development and testing of new ideas.
• Wearable Electronics: Compact size and battery charging make it perfect for wearable tech.
• Educational Projects: Great for learning about microcontrollers and embedded systems.

1. Powering the Board:

   • Connect the board to your computer using a USB cable for power and programming.
   • Alternatively, connect a 3.7V LiPo battery to the battery connector for portable projects.

2. Programming the Board:

   • Use the Arduino IDE or CircuitPython to program the board.
   • Select "Adafruit Feather RP2040" from the board manager in the Arduino IDE.

3. Connecting Peripherals:

   • Use the GPIO pins to connect sensors, actuators, and other peripherals.
   • Utilize the I2C, SPI, and UART interfaces for communication with other devices.

• Voltage Levels: Ensure that all connected peripherals operate at 3.3V logic levels to avoid damaging the board.
• Battery Charging: When using a LiPo battery, the built-in charging circuit will manage the charging process.
• Pin Usage: Be mindful of the pin assignments and avoid conflicts, especially when using multiple peripherals.

// Blink an LED connected to pin D13

void setup() {
  pinMode(13, OUTPUT); // Set pin D13 as an output
}

void loop() {
  digitalWrite(13, HIGH); // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(13, LOW);  // Turn the LED off
  delay(1000);            // Wait for 1 second
}

1. Board Not Recognized by Computer:

   • Ensure the USB cable is properly connected.
   • Try a different USB cable or port.
   • Check if the board is in bootloader mode by pressing the reset button twice.

2. Program Not Uploading:

   • Verify that the correct board and port are selected in the Arduino IDE.
   • Ensure no other programs are using the same COM port.

3. Peripheral Not Working:

   • Double-check the wiring and connections.
   • Ensure the peripheral is compatible with 3.3V logic levels.

• Resetting the Board: Press the reset button twice to enter bootloader mode if the board is not responding.
• Updating Firmware: Ensure you have the latest firmware and libraries installed for the Adafruit Feather RP2040.
• Consulting Documentation: Refer to the official Adafruit documentation and forums for additional support and resources.

By following this documentation, users can effectively utilize the Adafruit Feather RP2040 for their IoT projects and prototyping needs. Whether you are a beginner or an experienced user, this guide provides the essential information to get started and troubleshoot common issues.