XIAO RP2040

Tons of processing power in a package the size of your thumb. So tiny that any USB cable plugged into it has to be secured as it weighs more than the MCU itself. Barely uses any power even while operating at full tilt, and absolutely just barely sips on a battery while in standby mode. You’d think that the GPIO would leave something to be desired, but given its size I wouldn’t say that’s much of an issue. If you need more pins, get an expansion board or use a different model. Super useful if you’re trying to shrink down your projects - pairs well with displays and other components from Adafruit, Waveshare, etc.

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.

Low power consumption, small footprint. I'm using it as a plant watering smart controller for a starter. I plan to reconfigure and add a radio so I can add to my RF network of controllers.

I really the rp2040 and rp2350 series. That being said, I've moved on to the waveshare which follows the raspberry pi pin footprint. The xiao is for when you need some REALLY SMALL. It's a great series of products (save for the R1M1A, that bricked on me almost immediately and became unusable). So yes, the xiao rp2040 is easy to use and really geared toward small footprint work. If you need more pins and don't feel like multiplexing, then get something larger

Purchased this to create a circuitpython gift for a friend. This is the first microcontroller I’ve purchased and it was pretty easy to figure out how to flash it with circuitpython. Both Visual Code and Mu make it easy to connect to and update the code on it. I don’t know circuitpython but I’m learning as I go and enjoying it.

I just got the Seeed RP2040 board, and it's a great improvement over the previous generation (the Seeed XIAO). The older Seeed XIAO was fun and easy to use, but this new RP2040 is even easier to reboot, to move into CircuitPython mode, and to code for! I can power 7 LEDs and a small motor all at the same time! I'm going to buy more soon :)

I like rp2040 in all the different formats. This is probably my favorite due to the small size

Lot of value for the price, little lite on documentation. The raspberry pi website has a good starter guide.

GPIOの数が少なくていい時はとても重宝します。I2CやUARTで外部モジュールを繋げば、小さなボードでも多彩なことに使えています。またオンボードのLEDとしてRGBのほかNeoPixelまでひとつ付いてるので、インジケーターとして便利に使えます。 開発はArduino IDEでやっています。他のRP2040ボード（RasPi Pico等）と違って、ケーブル抜き差しやBootボタンの操作をせずとも書き込みができるので、プログラムをちょこちょこ手直ししながらの実験がとてもスムーズにできます。

It is painful one to avoid at all costs

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。

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。