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.

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.

Used pico's for a while, and had an easy time setting this up with code I used with the pico.Big downside I had was when I was testing a stepper motor, I had hardcoded the speed. Then I put a potentiometer in the circuit and when I plugged in the microcontroller to the computer to update it for the potentiometer, Windows couldn't recognize it anymore and I couldn't change the code. It still gets power and can spin the motor, but I can never change the code now. Tried completely unplugging from the board, but it just won't recognize it anymore.

Gave 4 stars because……Advertised on Amazon, shows pins for soldering to use in breadboard.PINS did not come with XIO 2040 order.

Used these for a small prop. Very small yet powerful. Easy to setup and iterate on. If your code crashes while connected to a serial monitor, subsequent code uploads don't execute until you hard reset the unit. Otherwise no issues.