Automatic Recognition Thereafter: Once you successfully flash it using this method once, it will be recognized simply by plugging it in as “COM14 (Raspberry Pi Pico 2W)” without needing to press the BOOT button from then on.<\/li>\n<\/ol>\nPresumed Cause<\/h3>\n
It is likely that right after purchase (or in a state with no program flashed), the functionality required to communicate with a PC is not running, which is why it wasn’t recognized as a COM port. Flashing a program manually enabled the USB communication function inside the program, allowing the PC to recognize it.<\/p>\n
Implementing LED Blinking: The LED is a “NeoPixel” on “GP22”<\/h2>\n
The number “22” was printed in small text near the LED on the board. Furthermore, based on the component’s shape, it turned out to be a “NeoPixel (WS2812B)” rather than a standard LED. By installing the `Adafruit NeoPixel` library and specifying pin number 22, I successfully achieved a vibrant 3-color LED blink.<\/p>\n
Please install the library to use the NeoPixel LED:<\/p>\n
Tools > Manage Libraries > Install Adafruit NeoPixel<\/p>\n
#include &lt;Adafruit_NeoPixel.h&gt;<\/p>\n
\/\/ — Configuration Area —
\n\/\/ Specify pin 22 as printed on the board
\nconst int RGB_LED_PIN = 22;
\nconst int NUM_PIXELS = 1;<\/p>\n
\/\/ Create NeoPixel object
\nAdafruit_NeoPixel pixels(NUM_PIXELS, RGB_LED_PIN, NEO_GRB + NEO_KHZ800);<\/p>\n
void setup() {
\n&nbsp; Serial.begin(115200);<\/p>\n
&nbsp; \/\/ Initialize LED
\n&nbsp; pixels.begin();
\n&nbsp; pixels.setBrightness(30); \/\/ Low brightness<\/p>\n
&nbsp; delay(1000);
\n&nbsp; Serial.println("\\n— GPIO 22 LED Test Start! —");
\n}<\/p>\n
void loop() {
\n&nbsp; \/\/ Red
\n&nbsp; Serial.println("Red");
\n&nbsp; pixels.setPixelColor(0, pixels.Color(255, 0, 0));
\n&nbsp; pixels.show();
\n&nbsp; delay(500);<\/p>\n
&nbsp; \/\/ Green
\n&nbsp; Serial.println("Green");
\n&nbsp; pixels.setPixelColor(0, pixels.Color(0, 255, 0));
\n&nbsp; pixels.show();
\n&nbsp; delay(500);<\/p>\n
&nbsp; \/\/ Blue
\n&nbsp; Serial.println("Blue");
\n&nbsp; pixels.setPixelColor(0, pixels.Color(0, 0, 255));
\n&nbsp; pixels.show();
\n&nbsp; delay(500);<\/p>\n
&nbsp; \/\/ White (All on)
\n&nbsp; Serial.println("White");
\n&nbsp; pixels.setPixelColor(0, pixels.Color(255, 255, 255));
\n&nbsp; pixels.show();
\n&nbsp; delay(1000);<\/p>\n
&nbsp; \/\/ Turn off
\n&nbsp; pixels.clear();
\n&nbsp; pixels.show();
\n&nbsp; delay(500);
\n}<\/p>\n
Conclusion<\/h2>\n
At one point I doubted whether the direct-plug USB board was broken, but by performing the “initial ritual (flashing in BOOT mode),” I was able to successfully control it from the Arduino IDE.<\/p>\n
\n- Lesson Learned: Don’t panic if a newly purchased RP2350 isn’t recognized. First, breathe life (a program) into it using the BOOT button.<\/li>\n<\/ul>\n
This vast open space of “16MB” and the power of the RP2350. The warm-up exercises are complete. Next time, I plan to add an SD card slot to this board and evolve it into a “data logger.”<\/p>\n","protected":false},"excerpt":{"rendered":"
While window shopping on AliExpress, a development board with a built-in USB Type-A male connector suddenly ca […]<\/p>\n","protected":false},"author":4,"featured_media":2602,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_locale":"en_US","_original_post":"https:\/\/donguri3.net\/?p=2600","footnotes":""},"categories":[1163],"tags":[434,51,52,266,1054,1053,381,106,270],"class_list":["post-5323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronics-microcontroller","tag-aliexpress","tag-git","tag-https","tag-neopixel","tag-raspberry-pi-pico-2","tag-rp2350","tag-381","tag-106","tag-270","en-US"],"_links":{"self":[{"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/posts\/5323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/comments?post=5323"}],"version-history":[{"count":1,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/posts\/5323\/revisions"}],"predecessor-version":[{"id":5326,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/posts\/5323\/revisions\/5326"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/media\/2602"}],"wp:attachment":[{"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/media?parent=5323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/categories?post=5323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/donguri3.net\/wp-json\/wp\/v2\/tags?post=5323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"RP2350](\"https:\/\/donguri3.net\/wp-content\/uploads\/2026\/01\/IMG_2815_fix2.jpg\")
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