2PCS RP2040-Zero Mini Board, Pico-Like MCU Board Based on Raspberry Pi MCU RP2040, Dual-Core Arm Cortex M0+ Processor, Onboard 2MB Flash Memory, Type-C USB Connector, Support C/C++，MicroPython

This postage-stamp sized board is absurdly tiny. I honestly wasn't even expecting it based on the images. Yet it is loaded with IO for project ideas. Like all Waveshare items i am always impressed with the great documentation getting this board up and running with the Arduino IDE in no time. I did install the core suggested and its far more feature packed than the stock "Arduino" one. The ZIF cable and connector are nice and secure with a good 6" or so of cable to locate a USBC header in your project. I love the built in WS2812 neo pixel inclusion it's a nice way to communicate status simply and effectively on a mini device.This ultra compact form factor makes it very easy to add into an existing device for enhancing functionality or build a whole project around. Always impressed with Waveshare products and this is no exception. Given the somewhat unique formfactor it can fill a lot of niches. It's well worth your consideration.

Easily programmed with CircuitPython and the Python code of your choice.

Tiny little board that seems to be on the higher end of usability in it's class. These little devices feel like they are only limited by your imagination. Many projects you can do with just this little chip. Will be sure to grab more of these as future projects demand.

This is a great board set for developing small form factor projects around a Pi clone.The two boards are joined by a ribbon cable that clamps into a slot on each board. The clamp is the weak point. which is why I deducted a star. The clamp is a tiny bit of plastic that can be easily broken if you are not careful.This review is for the second one of these I got. The first one arrived with one of the two clamps being broken in transit. These things happen, but it did illustrate that the clamps are somewhat fragile.Depending on your application, you may want to put a drop of non-conductive epoxy over the clamps to permanently secure them in place.Other than that, this is a very cool set up. great for experimenting or developing a small embedded system.

I've used various arduino and ESP boards for imbedded use before ranging from monitoring my water heater to temperature probes to Christmas light display using WS2812 addressable LEDs. I also have any number of Raspberry PIs around the house serving as a dns server, ad blocker, and VPN server. This is the first time I've ever tried a Raspberry PI microcontroller board. First of all this is small even compared to the D1mini. There are smaller version of the D1 board but this board is plenty small. The key size savings is by moving the usb circuit to a separate board which is smart because usually the usb is only there for programming. This means that when used as an imbedded controller, the usb circuit is not needed so the runtime size can be reduced.I got the board up in running in minutes using microPython. For more intensive use where max performance is needed like as an addressible LED controller, I would probably use the Arduino SDK or PicoC++. That said I'd probably still use the ESP32-s3 for addressable LEDs controller due to higher clock speed and built in wifi.