arduino › microcontroller board
arduino Arduino MKR Zero
MKR pinout with onboard SD slot and I2S for audio. No wireless — pair with an RFM95 LoRa module if you want range.
Specifications
- mcu chip
- atsamd21
- clock mhz
- 48
- flash kb
- 256
- sram kb
- 32
- wifi
- no
- wifi band
- none
- bluetooth
- none
- usb
- micro_b
- gpio count
- 22
- analog inputs
- 7
- pwm pins
- 12
- i2c
- yes
- spi
- yes
- uart count
- 1
- operating voltage v
- 3.3
- input voltage range v
- 5-7
- power pins
- vcc, vin
- firmware compat
- arduino_ide, platformio
- ai accelerator
- none
- form factor
- mkr
Sources
- SparkFun open product catalog · ingest 2026-05-06
- Adafruit open product catalog · ingest 2026-05-06
- Arduino official product database · ingest 2026-05-06