adafruit industries

Posted: **Mon Feb 03, 2025 11:19 am**

Hey everyone,
I recently purchased a QT Py 2040 to use in conjunction with a magnetometer, but have been having issues with uploading code to the board from the Arduino Ide. I've successfully installed all of the necessary libraries and board managers for the board as instructed through the documentation, but when it comes to uploading even just the blink sketch, the board doesn't output anything or blink any of it's LEDs. The console shows that a certain amount of bytes were written to the device, but nothing happens.
Thanks in advance.

Posted: **Mon Feb 03, 2025 12:01 pm**

This board doesn't support traditional blink. No onboard single-color LED.

Now traditionally you would use an onboard LED to make a blink occur. However, this board does not have an onboard single-color LED, so we will 'mimic' the same blink sketch but instead of using a digital output pin, we will use NeoPixel support to blink the onboard RGB LED!

Use the NeoPixel version for this one.

Code: Select all

#include <Adafruit_NeoPixel.h>

// How many internal neopixels do we have? some boards have more than one!
#define NUMPIXELS        1

Adafruit_NeoPixel pixels(NUMPIXELS, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);

// the setup routine runs once when you press reset:
void setup() {
  Serial.begin(115200);

#if defined(NEOPIXEL_POWER)
  // If this board has a power control pin, we must set it to output and high
  // in order to enable the NeoPixels. We put this in an #if defined so it can
  // be reused for other boards without compilation errors
  pinMode(NEOPIXEL_POWER, OUTPUT);
  digitalWrite(NEOPIXEL_POWER, HIGH);
#endif

  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
  pixels.setBrightness(20); // not so bright
}

// the loop routine runs over and over again forever:
void loop() {
  // say hi
  Serial.println("Hello!");
  
  // set color to red
  pixels.fill(0xFF0000);
  pixels.show();
  delay(500); // wait half a second

  // turn off
  pixels.fill(0x000000);
  pixels.show();
  delay(500); // wait half a second
}

adafruit industries

QT Py 2040 Code not uploading Arduino Ide

QT Py 2040 Code not uploading Arduino Ide

Re: QT Py 2040 Code not uploading Arduino Ide