I used Fusion 360 to design the enclosure, then exported bodies to STL files and 3D printed it

Step 3 : Flashing Code To XIAO

📷follow this tutorial for getting a idea about how to setup IDE and how to flushing process

https://www.youtube.com/watch?v=t1XsDqZjuQo

Here is the Code

#include <Adafruit_NeoPixel.h>
// Define the pin and number of LEDs
#define LED_PIN     D8
#define NUM_LEDS    2
// Create an instance of the Adafruit_NeoPixel class
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);
void setup() {
// Initialize the NeoPixel library
strip.begin();
strip.setBrightness(128); // 50% brightness (255 * 0.5 = 128)
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
// Cycle through red, green, and blue colors
setColor(strip.Color(255, 0, 0)); // Red
delay(1000);
setColor(strip.Color(0, 255, 0)); // Green
delay(1000);
setColor(strip.Color(0, 0, 255)); // Blue
delay(1000);
}
// Function to set the color of all LEDs
void setColor(uint32_t color) {
for (int i = 0; i < NUM_LEDS; i++) {
strip.setPixelColor(i, color);
}
strip.show();
}

Step 4: PCB Assembly

I used hand soldering to attach all the components to the PCB. First, I melted some solder on one pad of the PCB and placed the Xiao microcontroller on it while keeping the heat applied to the pad. After that, I connected the remaining pins.

Step 5:Enclosure Assembly

Put the top and bottom enclosure and fasten it with M3 10mm screws

Step 6: Testing

Connect Xiao to a USB power source and place the LED on the soldering pad make sure the placement of the LED is correct

If your LED is working it will successfully go through the testing sequence

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