Review on Arduino Nano 33 IoT by Stephanie Jonsson

Compared to an Arduino Nano of the same size or larger Uno see what you get: 1. 8 times more program memory (ROM) 2. 16 times more data storage (RAM)3. 3x the clock rate with 4x the register width and data path (thus even faster calculations than 3x)4. NINA Bluetooth/WiFi radio receiver if you want.5. The price is about 3/4 the cost of Nano or Uno. So what don't you like? 1. 3.3V instead of 5V can lead to compatibility problems with pure 5V peripherals 2. Different processor architecture (ARM instead of AVR) means that some Arduino programs will not work. No EEPROM. But if you need it, you can always connect externally via I2C or SPI.3. Afraid of the unknown? So, yes, it's not a plug-in compatible replacement, but it's certainly worth considering. FYI, another favorite of mine is the Arduino Nano Every, which is even cheaper and again better in almost every way. way than a normal nano and is 5 volts. Between those two, it almost eliminates any desire for another Arduino board.