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Built-in project · Seeed XIAO RP2040

XIAO RP2040 blink

The red user LED of the XIAO RP2040, on GPIO 17, which lights when the pin is LOW. The whole build, a Seeed XIAO RP2040, runs here in your browser on the firmware below; open it in the editor to change the wiring or the code and run it again.

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The parts retail for about $10.40. On Mokxi they're free.

XIAO RP2040 blink · Seeed XIAO RP2040live0.000 s 0.00x
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The circuit itself, running here on the simulator. Press what can be pressed; click anything else to open it in the editor.

The code

The firmware exactly as the editor opens it. Change a line there and press Run: it compiles in the browser.

sketch.ino · Seeed XIAO RP2040
// Blink: the red user LED, GPIO 17, which lights when the pin is LOW.

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, LOW);  // on
  delay(500);
  digitalWrite(LED_BUILTIN, HIGH); // off
  delay(500);
}

Parts list

2 parts, plus the jumper wires. They retail for about $10.40; on Mokxi they're free.

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