ArduinoMKR Zero Board [ABX00012] with SAMD21 Cortex-M0+ 32-Bit ARM MCU, Built-in SD Card Slot for Music Playback, 22 Digital I/O Pins, 12 PWM Outputs, 256KB Flash, 32KB SRAM, 3.3V Operating Voltage.

Nothing beats the real thing. I've tried a lot of the clones and never once have I said, "gee, I can't even tell a difference?!". You always can. And the legit Arduino boards are always top notch, reliable, smaller, and built better all around.There is nothing worse when you're trying to learn something new, than having to fight through all of the absurd workarounds some clone manufacturer requires you to do before you can even use the device.Buy Arduino. Get a device that works. Actually plug and play. And be on your way faster with way less headache.

Capable board with more resolution on ADC (12-bit) vs. older boards. The board also has a 10-bit DAC which is very helpful.I have found the controller is sensitive to the quality of the USB cable. Had to go through a number of cables to find one that worked.Nice board

Wasn't sure if this was official Arduino or a clone but now that I've received it looks as though from packaging and board markings that it is indeed genuine Arduino built in Italy. Works great and was reasonably priced.

Not delivered in a static bag so you could get a blown board. Doesn't come with cable and uses old micro USB connector. Otherwise, it seems to work fine.

I'm seeking controller boards for use in laboratory data acquisition applications. The MKR Zero looks like it has a lot of potential for this purpose. Using the Arduino library, one can easily interface to many sensor chips. The USB C port makes it easy to communicate with the MKR Zero from a desktop or laptop machine that serves as the development platform for the software that drives the data acquisition. I'm also exploringthe Adafruit Grand Central M4, which has the same capability - but also has hardware floating point support. It appears that both the MKR Zero and the Grand Central M4 will run CircuitPython - a definite plus.

I'm using this to build a data capture system. With some work I'm able to sample 6 channels at > 50K samples/sec, digitally filter the data with a 17-input filter and downsample 4x, and write the result to an SD card.I'd like a few more poles in the filter, but this is a lot of DMA and multiplication for such an inexpensive system.Note that no part of the A/D programming uses the Arduino libraries. They won't get you there.

Arduino boards are a great choice because of the large number of users and great community support.

I was really hoping this module would fit into my project. However, when I connect it to IDE and then attempt to open the Serial Monitor, the monitor will not open. There is not a free COM port. Tried lots of things with help of the Forum. Tried 2 computers with the same result. Finally, I tried one of my laptops that's used for only 1 purpose, displaying PDF files for music. With a Fresh IDE load and never attempting to connect a NANO, the MKR ZERO worked perfectly. However, this is not an acceptable solution as I was planning to use both NANO's and MKR ZERO's on this project. Would be nice if someone from Arduino would acknowledge the problem on the Forum.