Seeed Studio XIAO RP2040 Microcontroller with Dual-Core ARM Cortex M0+ Processor, Compatible with Arduino, MicroPython, CircuitPython, Supports Numerous Interfaces

特に使いづらさなどもなくよかったです。

小型で使いやすいです。

Raspberry Pi Picoと同じパワフルな「RP2040」チップを搭載しながら、切手サイズにまで小型化した傑作ボードです。 ​最大の魅力は、やはりこのサイズ感とUSB-C端子です。Picoでは大きすぎて組み込めなかった隙間にも余裕で収まり、Micro USBのストレスからも解放されます。また、本家Picoにはない「リセットボタン」と「BOOTボタン」が両方搭載されているため、プログラムの書き込み時にケーブルを抜き差しする手間がないのも、地味ながら開発効率を大きく上げてくれます。 ​ただ、この小ささにデュアルコアのハイパワーを詰め込んでいるため、負荷をかけるとかなり発熱します。指で触れて「熱っ」と感じるレベルになることも珍しくありません。密閉された狭いケースに入れる場合は、放熱への配慮が必要です。また、ピン数が少ないので、複雑な制御をするには工夫がいります。 ​とはいえ、3個セットでこの価格、そしてこの性能。キーボードの自作や、ちょっとしたガジェットの制御用として、道具箱に常備しておきたくなる優秀なマイコンです。

何かを組むにしても小型化できるので、かなり重宝しています。

マクロパッドを作るのに使用しましたが、特に問題なく使えています。 写真にはありませんが、ピンヘッダは付属していました。

ラズパイピコの互換として最適 価格がもう少し安いと助かるくらいかな？

RP2040 has recently become my favorite microboard for building relatively simple and compact electronic devices (which usually contain a couple of inputs, a couple of outputs, a couple of buttons, a potentiometer or two and an I2C OLED display). For simple status signaling, it has a very bright built-in RGB LED which doesn't use any of the onboard pins, of which there is a limited number. I have already made a laser control box, a temperature control board for a custom-built 3D printer and a spot welder based on this board, and all of them work well. Sure, this board is not as powerful as Teensy 4.0, but it is not as expensive either, and noticeably more compact. Kudos for including the USB-C port, which is much more convenient than Teensy's micro USB. RP2040 can be soldered to one side of a PCB, leaving the other side completely free to run traces for other components, without pin holes getting in the way. For the types of devices I mentioned before, it has more than enough processing power. If such power is not needed, the clock speed of the CPU along with power consumption can be dialed down at compile stage, which helps RP2040 to run much longer when powered by battery. The PWM library is not what you would call an Arduino standard, but once you're familiar with it it's just as fast and capable. Overall, nice and very usable microboard.

was not very good to work with.. software and arduino coding doesnt work right with it.. i dont recommend get something like an esp32 device

Wenn man weiß, wie ein Raspberry Pico PI programmiert wird, dann kann man diese Board in ähnlicher Weise nutzen. Das Board hat genügen RAM/Flash Speicher, um es auch mit FreeRTOS zu betreiben.

It is painful one to avoid at all costs

Updated review. Found more information and I'm quite pleased with the Xiao Rp2040. So far it works with SSD1306 Oled display. See attached video of 3D plotter I wrote. Using the U8g2 library configured for SSD1306. I also tried an SH1106 display. the 1306 driver in the u8g2 library works with minor glitches, the 1106 config doesn't work at all. I'm trying to find libraries for use with ST7735 and 7789 displays. I also wrote a sketch that generates random color on the internal RGB LED, when fades from one color to the next. Doesn't require any external connections. That LED is bright! It's a work in progress of course.